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International Space
Station - ISS
North Korean
MKS-4 Satellite
HD Video from
ISS cams (with overlay)
+Flare Predictions
In this page you can track in real time all the satellites orbiting the Earth, with both 2D and 3D interactive representations, predict their passes, view their trajectory among stars on an interactive sky chart, predict satellite flares and transits (across the Sun and the Moon), find out the best location to see these events on a detailed Google map. You can also follow satellite re-entries and other special events, join the observer community, post messages and share your comments and observations. Currently in our database we have more than 9000 observation reports!. You won't find any other tracker that provides all these functions!

Read Observers' Reports! is the only website that has a public DB of satellite observations where you can search for flare reports

Latitude [deg]
Altitude [km]
DEC J2000 [d:m:s] Sun El.[deg]
Longitude [deg]
Azimuth [deg] RA J2000 [h:m:s] Loaded SAT :

JD Elevation [deg] Magnitude


Do you want to observe the International Space Station crossing your sky?
Install our 3D tracker for Android devices and you have just to point your phone to the sky and follow the line to find the ISS. You can also track the Station 24 hours a day with a 3D view of the Earth, constellations and more than 15.000 stars. A simple count down will inform you when you can actually see the ISS with the naked eye. Visit this web page for more details or for downloading the App.

News from Space and Spaceflights

29/08/2017 - NASA’s Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) mission is back on track for a 2018 launch after the discovery of leaks in key instrumentation during testing forced NASA to abandon its original 2016 launch date. The spacecraft is now in final testing at its Lockheed Martin facility in Denver, ahead of a unique launch from ULA’s West Coast site. (source: - more...)

28/08/2017 - The third transportation vehicle for NASA’s Commercial Resupply Services 2 contracts for resupply efforts of the International Space Station has passed a major ground test milestone at Edwards Air Force Base, California. Completing a 60 mph (96.5 k/h) tow test earlier this month, Sierra Nevada Corporation’s Dream Chaser mini-spaceplane is now aiming for a series of Captive Carry flight tests suspended underneath a 234-UT lifting commercial helicopter. (source: - more...)

25/08/2017 - Orbital ATK’s Minotaur rocket made its first launch from Cape Canaveral Friday, delivering the experimental space surveillance ORS-5 satellite to orbit. The Minotaur IV vehicle lifted off deep into a four-hour window with a T-0 of 02:04 Eastern (06:04 UTC) from Launch Complex-46 (LC-46). (source: - more...)

24/08/2017 - SpaceX launched its fortieth Falcon 9 Thursday, carrying the Formosat-5 spacecraft for the Taiwan’s National Space Organisation and the Republic of China’s National Space Organisation. The launch, which included a successful landing of the first stage aboard the Autonomous Spaceport Drone Ship, occurred at the start of a 44-minute window that opened at 11:50 local time (18:50 UTC) from Vandenberg Air Force Base in California. (source: - more...)

23/08/2017 - NASA’s Aerospace Safety Advisory Panel (ASAP) still has a number of concerns over crew safety numbers for the Commercial Crew Program (CCP), notably the guideline Loss of Crew (LOC) metric, based on the threat of MicroMeteoroid and Orbital Debris (MMOD) damage and crew recovery from the ocean after an abort. The plan acknowledged both SpaceX and Boeing are actively working to improve their LOC ratings. (source: - more...)

21/08/2017 - The Orion European Service Module (ESM) Propulsion Qualification Module (PQM) is in the opening phases of testing – including hot firings – at the White Sands Test Facility in New Mexico. Bolted to a test stand, the PQM is being taken through a series of test campaigns by a team of personnel from prime contractor Airbus Defence and Space, the European Space Agency (ESA), and NASA. (source: - more...)

19/08/2017 - Gearing up for their second Vandenberg flight in as many months, SpaceX has static fired the Falcon 9 that will lift an extremely light-weight Taiwanese satellite to orbit next week. The static fire, a key step in every Falcon 9 launch campaign, paves the way for the launch of Formosat-5 on Thursday, 24 August at 11:50 PDT from SLC-4E at Vandenberg Air Force Base, CA, ahead of a first stage landing on the ASDS “Just Read The Instructions”. (source: - more...)

17/08/2017 - A Russian EVA was conducted outside of the International Space Station (ISS) with two Russian cosmonauts deploying several nanosatellites, collecting research samples and performing structural maintenance. Expedition 52 Commander Fyodor Yurchikhin and Flight Engineer Sergey Ryazanskiy exited the station’s Pirs airlock at 14:36 UTC and ended it after seven hours and 34 minutes. (source: - more...)

17/08/2017 - United Launch Alliance (ULA) has launched a new satellite for NASA’s Tracking and Data Relay Satellite System (TDRSS) on Friday, with an Atlas V carrying the TDRS-M satellite into orbit. Liftoff from Space Launch Complex 41 (SLC-41) at Cape Canaveral was late in a 40-minute window, with liftoff occurring at 08:29 local time (12:29 UTC). (source: - more...)

11/08/2017 - Virgin Orbit’s LauncherOne has signed an agreement to launch a SITAEL satellite developed in collaboration with the European Space Agency (ESA) and the Italian Space Agency (ASI). The all-electric propulsion microsat demonstrator called HETsat will be air-launched on a rocket carried under the wing of Virgin Orbit’s Cosmic Girl carrier plane. (source: - more...)

11/08/2017 - With just one year to go until the scheduled completion of all uncrewed and crewed test flights for SpaceX and Boeing s commercial crew transportation services, the NASA Advisory Council recently held a routine review of the technical, hardware, software, and training progress the two companies are making toward the goal of returning the capability to launch people into space from the United States. (source: - more...)

11/08/2017 - Japan’s Mitsubishi Heavy Industries will launch an H-IIA rocket early next week, carrying the third spacecraft for the country’s Quasi-Zenith Satellite System of GPS augmentation satellites. The H-IIA was scheduled to lift off from the Tanegashima Space Centre with QZS-3 at 13:40 local time (04:40 UTC) on Saturday, before an issue was found late in the countdown. (source: - more...)

10/08/2017 - SpaceX has conducted a Static Fire test on the Falcon 9 set to launch the CRS-12 Dragon to the International Space Station (ISS). A successful test on Thursday paves the way for a launch on Monday, which will include another landing attempt on the LZ-1 landing pad that is already being prepared for the dual booster landing during the maiden Falcon Heavy mission. (source: - more...)

09/08/2017 - A little more than two weeks after the last test, the RS-25 test team is ready to acceptance test the next completed engine controller unit (ECU) that will eventually fly on NASA’s Space Launch System (SLS) launch vehicle. Another flight-duration hot-fire of Development Engine 0528 (E0528) is planned Wednesday afternoon local time in the A-1 test stand at the Stennis Space Center (SSC) in Mississippi. (source: - more...)

07/08/2017 - The Vostochny Cosmodrome – a key part of Russia’s future space launch ambitions – has undergone a maintenance period ahead of what will be its second launch. The new launch site is currently dedicated to Soyuz rockets, but will eventually be the future site for the Angara and super heavy launch vehicles. (source: - more...)

07/08/2017 - Two spacecraft have completed their journeys to their Kourou launch site ahead of launching together on a September Ariane 5 mission. The BSAT-4a satellite has joined Intelsat 37e for their final processing flow ahead of meeting up atop the Arianespace rocket for a dual launch in early September. (source: - more...)

04/08/2017 - In preparation for New Horizons flyby of its next Kuiper Belt target, 2014 MU69, the spacecraft s team has conducted a series of ground, airborne, and space-based telescopic examinations of 2014 MU69 during a series of occultation events in June and July. The observation campaign has yielded tantalizing new information on the Kuiper Belt Object, revealing a potentially far more interesting world for New Horizons to explore on 1 January 2019. (source: - more...)

03/08/2017 - The final work on Kennedy Space Center’s Pad 39B is being conducted in line with the construction and outfitting of systems on the Mobile Launcher (ML) for the Space Launch System (SLS). This multi-element verification and validation (V&V) testing is set to take place next year, a full dress rehearsal ahead of the rollout of the Exploration Mission-1 (EM-1) rocket. (source: - more...)

02/08/2017 - With a busy year already in the books, the Eastern and Western Ranges in the United States are readying for the next salvo of missions from SpaceX and United Launch Alliance following a stand down of launch operations to provide time for maintenance. Specifically for the Eastern Range, the stand down period allowed the Air Force to complete more than 70 operations that will enable the Range to maintain its commitment and support to its users. (source: - more...)

01/08/2017 - Arianespace s small launcher, the Vega rocket, successfully conducted the launch of the VEN S and OPTSAT 3000 satellites on Tuesday evening in what was the seventh Earth observation mission for the lightweight rocket. Lift off occurred on schedule at 01:58 UTC from Europe s Spaceport in Kourou, French Guiana. (source: - more...)

31/07/2017 - The Ground Systems Development and Operations (GSDO) team at the Kennedy Space Center (KSC) in Florida is continuing construction and testing to get ready to support upcoming Exploration Mission launches. Testing at the Launch Equipment Test Facility (LETF) is in full swing delivering launch vehicle umbilicals and swing arms to the Mobile Launcher (ML). (source: - more...)

28/07/2017 - The Russian Federal Space Agency, Roscosmos, has launched three new crewmembers to the International Space Station aboard the Soyuz MS-05 vehicle. Liftoff was on schedule at 15:41 GMT (11:41 EDT) from the Baikonur Cosmodrome in Kazakhstan with a fast-tracked, four-orbit rendezvous with the Station. The MS-05 crew docked to the ISS at 21:54 GMT. (source: - more...)

27/07/2017 - With all the structural test articles (STA) of the Orion spacecraft at prime contractor Lockheed Martin’s Space Systems facility in the Denver area, work is underway to qualify the elements for the Exploration Mission-1 (EM-1) and Exploration Mission-2 (EM-2) missions to the Moon. Testing of different combinations of spacecraft hardware in support of EM-1 and EM-2 will continue into 2019. (source: - more...)

26/07/2017 - Launch delays are sometimes part of the equation in determining when specific missions launch in relation to each other. Sometimes, those delays occur to missions for the same agency, as is now the case with TDRS-M and CRS-12. With replacement operations to the TDRS-M omni antenna underway, NASA/United Launch Alliance at first requested 10 August for TDRS-M – then changed that a day later to 20 August. SpaceX has requested 14 August for the CRS-12 Dragon launch to the International Space Station. (source: - more...)

21/07/2017 - The long-awaited return of American astronauts launching on US spacecraft, a capability last seen when Atlantis closed out the Shuttle Program in 2011, is set to return next year. Along with new crew transporters, the Space Shuttles’ legacy will be honored by the return of a lifting body vehicle, as Dream Chaser makes progress towards her role for uncrewed ISS resupply efforts. (source: - more...)

19/07/2017 - Developing rockets is difficult – even when those rockets use existing rocket boosters. Such is the case for SpaceX and the development of the Falcon Heavy. Once operational, Falcon Heavy will be the most powerful rocket in the world. While the path to its inaugural mission has been challenging, Elon Musk is urging caution surrounding expectations of the rocket’s first flight, which is expected later this year from LC-39A at the Kennedy Space Center, Florida. (source: - more...)

18/07/2017 - The Laser Interferometer Space Antenna (LISA) pathfinder mission has come to an end via the final commanding of the spacecraft. The 16 month mission, has provided the tools for a future mission that may take place – probably not until the 2030s – having successfully demonstrated the technology required to operate a space observatory tasked with studying gravitational waves. (source: - more...)

17/07/2017 - NASA and Boeing are reviewing the status of the TDRS-M launch date following an incident relating to an antenna during the spacecraft’s final launch processing to launch. The spacecraft’s launch atop United Launch Alliance’s Atlas V rocket is currently scheduled to take place on August 3. (source: - more...)

15/07/2017 - The first spacecraft to leave the inner solar system sailed into the asteroid belt 45 years ago today, 15 July 1972, on a mission that would mark many firsts for NASA s exploration of the solar system. Pioneer 10, the first outer solar system mission, became the first probe not only to leave the inner solar system, but also the first probe to be launched on an escape trajectory from the solar system and the first craft to visit the planet Jupiter. Today, NASA s Juno spacecraft continues the exploration efforts of the Giant Planet begun by Pioneer 10 over four decades ago. (source: - more...)

14/07/2017 - Russia conducted a complex mission Friday to deploy seventy-three satellites via a Soyuz-2-1a rocket with a Fregat upper stage. Following liftoff from the Baikonur Cosmodrome in Kazakhstan at 12:36 local time (06:36 UTC), the Fregat upper stage performed a series of burns over eight-and-a-half hours to inject its payloads into their planned polar orbits. (source: - more...)

11/07/2017 - The Interim Cryogenic Propulsion Stage (ICPS) is now deep into its latest phase of processing, as it prepares to be housed in the Space Station Processing Facility (SSPF) – a facility once packed with modules waiting for their ride on Shuttles to make up the elements of the International Space Station (ISS). The ICPS will be the Upper Stage for the maiden flight of the Space Launch System (SLS). (source: - more...)

10/07/2017 - Set for launch next year, the BepiColombo spacecraft is coming to the end of its test phase ahead of being shipped to Kourou, French Guiana in readiness to begin a journey to Mercury, opening with a ride on the Ariane 5 rocket. The final major processing tests involved being shaken on a vibrating table and stacked into its launch configuration in ESA’s technical center in the Netherlands. (source: - more...)

07/07/2017 - With just 20 satellites of the Iridium Next constellation in orbit, Iridium Communications six remaining launches with SpaceX over the next year will place their entire 75 satellite network into polar orbit. The new constellation replaces an aging network and promises innovative, everyday telecommunications applications from airplane location services to maritime distress/communication to public global push-to-talk services to civilian remote wi-fi and cellular network capabilities to thousands of other applications for government, military, and civilian populations. (source: - more...)

05/06/2017 - India’s GSLV Mark III rocket successfully made its first all-up launch and first attempt to reach orbit Monday in a late afternoon liftoff from the Satish Dhawan Space Centre. The launch was on schedule at 17:28 local time (11:58 UTC), with the mission tasked with lofting the GSAT-19 satellite. (source: - more...)

05/06/2017 - For the first time since 2011, a previously-flown spacecraft is arriving at the International Space Station. The CRS-11 Dragon from SpaceX – which was previously used on the… (source: - more...)

04/06/2017 - In a move that came as a surprise, NASA decided to unberth the Cygnus OA-7 resupply craft from the ISS over a month ahead of schedule. The move will help alleviate the down-sized ISS crew s workload in July. The OA-7 Cygnus is now set to spend a week in free-flight performing the SAFFIRE III experiment and deploying satellites for Nanoracks before destructively reentering Earth s atmosphere on Sunday, 11 June. (source: - more...)

03/06/2017 - SpaceX launched its first re-used Dragon spacecraft aboard a Falcon 9 on Saturday, beginning the CRS-11 resupply mission to the International Space Station. The first attempt was scrubbed during the initial attempt due to poor weather, meaning Falcon 9 lifted off from the Kennedy Space Center – making the hundredth flight from the historic Launch Complex 39A – at the weekend. (source: - more...)

01/06/2017 - Following the interruption of a “social movement” that effectively shut down the Arianespace base of launch operations, the company launched its third mission in the space of less than a month. Liftoff of the Ariane 5 – carrying ViaSat-2 and Eutelsat 172B – took place at the opening of a one hour window, with the launch marked 23:45 UTC at the Kourou spaceport in French Guiana. (source: - more...)

31/05/2017 - Japan’s H-IIA rocket launched the second navigation satellite in the country’s Quasi-Zenith Satellite System in the first of three launches scheduled for Thursday. Liftoff for the Michibiki-2 satellite took place from the Tanegashima Space Centre, on schedule, at 09:17 JST (00:17 UTC). (source: - more...)

30/05/2017 - While most of the recent attention has been on its next door neighbor, Pad 39B is making good progress towards its new role in hosting the Space Launch System (SLS) – and potentially other rockets – with a major milestone completed this month. The last of over 93,000 new bricks was laid in the Flame Trench, setting the stage for the installation of the new Flame Deflector next month. (source: - more...)

28/05/2017 - SpaceX has static fired their Falcon 9 rocket tasked with lofting the CRS-11/SPX-11 Dragon resupply mission to the International Space Station on Sunday ahead of a planned launch on Thursday afternoon at 17:55 EDT (21:55 UTC). The company had intended to conduct the static fire on Saturday before remarkably advancing that forward to Friday. Technical obstacles then prevented the Friday test and ultimately moved the event to Sunday. (source: - more...)

26/05/2017 - Impacted by significant disruptions in recent months, a wide range of assembly and production work for the Space Launch System (SLS) Core Stage nevertheless continues at the Michoud Assembly Facility (MAF) in New Orleans, Louisiana, to complete the test and flight hardware in parallel with facility repairs and now investigation of a serious mishap. (source: - more...)

25/05/2017 - Russia has launched a Soyuz-2-1b rocket from Plesetsk Thursday carrying a Tundra missile detection spacecraft, ending a year-long gap in Russian military satellite launches. Liftoff occurred on schedule at 09:33 Moscow Time (06:33 UTC). (source: - more...)

23/05/2017 - Two spacewalkers – NASA astronauts Peggy Whitson and Jack Fischer – performed a short EVA on Tuesday to replace a recently failed piece of critical command and control hardware on the International Space Station (ISS). The short-notice unplanned spacewalk got underway at 11:20 AM UTC and finished two hours and 46 minutes later. (source: - more...)

21/05/2017 - The U.S.-based Rocket Lab corporation is set to enter the commercial launch market with the maiden flight of its Electron rocket. The small-scale launcher will cater to the… (source: - more...)

18/05/2017 - Vector Space Systems, a startup small satellite launch service, is hoping to revolutionize the launch market not just through a dramatic reduction in cost for launch operations for… (source: - more...)

17/05/2017 - The Arianespace Soyuz ST-A rocket was in action on Thursday, tasked with the lofting of the SES-15 satellite. The launch was only the second time this rocket has lofted a GEO spacecraft from the European Spaceport in Kourou, French Guiana. Liftoff occurred at the start of a window that opened at 11:54 GMT, beginning a multi-hour mission ascent to spacecraft separation. (source: - more...)

16/05/2017 - The RS-25 engine team scrubbed a Tuesday afternoon attempt to perform the next hot-fire test in the A-1 test stand at the Stennis Space Center in Mississippi. NASA, RS-25 prime contractor Aerojet Rocketdyne, and Stennis facilities contractor Syncom Space Services (S3) are attempting acceptance testing the second engine controller unit (ECU) slated to fly on the first launch of NASA’s SLS launch vehicle. (source: - more...)

15/05/2017 - SpaceX conducted its sixth launch of the year Monday, with a Falcon 9 rocket deploying the Inmarsat-5 F4 communications satellite. Liftoff, from the Kennedy Space Center, was on schedule at the opening of a 51-minute launch window at 19:20 local time (23:20 UTC). The booster – as planned – did not return for a landing due to the performance requirements of the heavy satellite. (source: - more...)

12/05/2017 - Two astronauts aboard the International Space Station (ISS) completed the 200th spacewalk in the station s history, in order to perform a number of maintenance and upgrade tasks outside the orbital laboratory. The spacewalk, designated US EVA-42, got underway at 13:08 PM GMT and was shortened to just over four hours due to a battery life concern. (source: - more...)

12/05/2017 - In what is a highly welcomed, if not somewhat surprising decision, NASA has officially announced that they will not place a crew onboard the first SLS flight, the EM-1 mission. The decision to keep EM-1 uncrewed was based on cost estimates for such a feat, identified as part of a White House initiative that kicked off the feasibility study in February. With the study concluded, NASA can continue to focus on getting SLS ready for its first flight, which is now No Earlier Than 2019. (source: - more...)

11/05/2017 - SpaceX has demonstrated for a second time just how short a turnaround it can accomplish at LC-39A with Thursday’s static fire of the Falcon 9 that is set to launch the Inmarsat 5 F4 satellite Monday afternoon. As preparations for that mission continue, the flight two slots down on the manifest, the mid-June launch of BulgariaSat 1, has now been announced and confirmed as the next mission to make use of a flight-proven Falcon 9 core stage. (source: - more...)

09/05/2017 - Vector Space has conducted a crucial test of their Vector-R rocket that the company hopes will expand the small satellite launch market via small-scale launchers. As SpaceX has disrupted the large scale market, so does Vector Space hope their new rocket system can disrupt the small scale market by eliminating the need for ride-share requirements small satellites currently face while significantly lowering the cost to small satellite customers. (source: - more...)

08/05/2017 - NASA and Space Launch System (SLS) Core Stage prime contractor Boeing recently resumed welding elements for the launch vehicle’s first flight after a technical issue suspended welding last year. A change to a welding tool in the Vertical Assembly Center (VAC) at the Michoud Assembly Facility (MAF) in New Orleans, Louisiana, had unintended consequences that in part disrupted the assembly and production schedule for the Core Stage and helped push the forecast target date for the first SLS launch on Exploration Mission-1 (EM-1) into 2019. (source: - more...)

07/05/2017 - After several false dawns, the US Air Force’s X-37B mini-spaceplane has landed at the Kennedy Space Center (KSC) for the first time. With local reports of a sonic boom breaking through the morning air in areas of Florida, the Air Force confirmed the landing took place on Sunday at the historic Shuttle Landing Facility (SLF) (source: - more...)

04/05/2017 - Arianespace returned to action on Thursday with the long-awaited launch of its Ariane 5 rocket – following a delay caused by a local “social movement”. Ariane 5 lofted the SGDC and Koreasat-7 satellites from the European Spaceport in Kourou, deep into the launch window at 21:50 GMT. A late fuel load and a telementry based issue caused the launch to move later into the evening. (source: - more...)

04/05/2017 - India will launch its GSAT-9 communications satellite via a Geosynchronous Satellite Launch Vehicle (GSLV) rocket Friday. The Indian Space Research Organisation (ISRO) launch, which will support international partnerships in South Asia, is scheduled for 16:57 local time (11:27 UTC). (source: - more...)

03/05/2017 - Following the launch of the NROL-76 spacecraft on Monday – which also included a successful Second Stage extended coast test – SpaceX is already deep into preparations to launch its next mission, with the Inmarsat 5 F4 satellite, in the middle of this month. The company’s improving launch cadence is being achieved mainly via the use of just one East Coast pad, pointing towards its future manifest potential once SLC-40 returns to action. (source: - more...)

29/04/2017 - SpaceX will conduct its first dedicated launch for the US National Reconnaissance Office (NRO) Sunday, with a Falcon 9 carrying out the NROL-76 mission. Liftoff from the Kennedy Space Center’s Pad 39A is scheduled for a two-hour window opening at 07:00 Eastern time (11:00 UTC). T-0 has been set 15 minutes into the window, at 07:15 Eastern. (source: - more...)

28/04/2017 - As the facility continues repairs of tornado damaged infrastructure and looks to find workspace for displaced tenants, NASA, Space Launch System (SLS) Core Stage prime contractor Boeing, and facility operations and maintenance contractor Syncom Space Services are ready to ship the first SLS hardware element from the Michoud Assembly Facility (MAF) in New Orleans, Louisiana to start structural testing. (source: - more...)

26/04/2017 - With their OA7- mission underway and currently berthed at the International Space Station, Orbital ATK is pressing forward with plans for the series of CRS-1 extended contract missions which are set to begin later this year. The company is also proceeding with planning for their six contracted CRS-2 resupply missions to the Space Station, a contract that now offers NASA three different variants of Cygnus vehicles. (source: - more...)

25/04/2017 - SpaceX is preparing for Static Fire tests in two regions of the United States this week, both of which will advance the company’s profile in the launch industry. A Falcon 9 booster is expected to conduct a test firing at KSC’s 39A ahead of SpaceX’s first NROL mission, while the core booster for the first Falcon Heavy is sat on the test stand in McGregor, Texas. (source: - more...)

23/04/2017 - Nearly 20 years after launch and almost 13 years at the majestic ringed planet, the Cassini spacecraft is about to enter the final phase of its historic mission. The Grand Finale of Cassini’s mission began Sunday morning, setting up a series of close-proximity ops to the planet as Cassini dives between the innermost edge of Saturn’s rings and the planet itself to prepare for atmospheric entry into Saturn and the end of its mission on 15 September 2017. (source: - more...)

21/04/2017 - Orbital ATK s Cygnus OA-7 resupply craft, the S.S. John Glenn, was berthed at the ISS Saturday morning. The OA-7 Cygnus – packed with equipment and supplies for the Expedition 51 crew – launched Tuesday aboard a ULA Atlas V rocket and performed orbit raising and refinement burns as it waited its turn for arrival at ISS, having to slip in after the Soyuz MS-04 spacecraft launched and docked on Wednesday. (source: - more...)

19/04/2017 - The Soyuz MS-04 crew successfully launched atop a Soyuz-FG carrier rocket from the Baikonur Cosmodrome in Kazakhstan on Thursday, with two new crewmembers for Expedition 51. Liftoff occurred at 07:13:44 GMT, with a nominal docking to the Station following around six hours after launch at 09:18 EDT (13:18 GMT). (source: - more...)

19/04/2017 - China is taking another significant step on the road towards a permanent presence in space, following the Long March 7 (TZ-1) launch of Tianzhou-1 – the first Chinese logistics cargo vehicle. The launch took place at 11:40:45 UTC on Thursday from the LC201 Launch Complex at the Wenchang Space Launch Center, followed by docking on Saturday (source: - more...)

18/04/2017 - United Launch Alliance and Orbital ATK launched the OA-7 Cygnus mission to the International Space Station (ISS) on Tuesday. Flying atop an Atlas V rocket, Cygnus departed the SLC-41 pad at Cape Canaveral Air Force Station at the start of a thirty-minute window that opened at 11:11 local time (15:11 UTC). (source: - more...)

15/04/2017 - The crew on the International Space Station (ISS) have successfully replaced a window pane on the Cupola module. The operation was conducted without any risk to the crew, thanks to the innovative design on the module’s windows, which involves four panes allowing for internal replacement while risking no pressure loss for the Station. (source: - more...)

12/04/2017 - As SpaceX continues to make excellent progress on rebuilding SLC-40 at the Cape Canaveral Air Force Station, the company has achieved a major milestone toward the debut of its Falcon Heavy rocket. With the first Falcon Heavy side core on the test stand at McGregor, Texas, SpaceX is in final preparation for the all important hot fire test of the booster before its shipment to the Kennedy Space Center ahead of a planned maiden flight later this year. (source: - more...)

11/04/2017 - The Chinese returned to launch action with the lofting of a new experimental communications satellite from the Xichang Satellite Launch Center. The launch was conducted by the Long March 3B G2 ‘Chang Zheng-3B/G2’ (Y43) from the LC2 Launch Complex at the Sichuan province site, with T-0 noted as 11:04 UTC. (source: - more...)

10/04/2017 - Three crew members from the International Space Station (ISS) have completed their journey back to Earth on Monday, with undocking of their Soyuz MS-02 spacecraft occurring at 3:57 am Eastern, followed by Shane Kimbrough, Sergey Ryzhikov and Andrey Borisenko touching down on the steppes of Kazakhstan at 7:20 am Eastern. (source: - more...)

07/04/2017 - The long and arduous process of achieving commercial crew transportation services to space is closing in on an important milestone. At a recent update to the NASA Advisory Council, NASA’s commercial crew transportation services program manager discussed numerous aspects to SpaceX and Boeing’s progress over the last few months and revealed that, while the timeline is tight, the two companies are on track for their scheduled crew demo flights of Dragon and Starliner in 2018. (source: - more...)

06/04/2017 - After years without concrete missions beyond the current EM-2 test flight, NASA has finally unveiled a plan for multiple missions of its SLS rocket. The plan would see… (source: - more...)

05/04/2017 - NASA astronaut Peggy Whitson has been granted a three-month extension to her mission on the International Space Station (ISS). The decision, made between NASA and Roscosmos, avoids a “gap” in the full crew compliment during a two-month period in the summer. Meanwhile, Soyuz TMA-02 is preparing to return home three crew members next Monday. (source: - more...)

03/04/2017 - An Emergency Egress System (EES) has completed its installation into the Crew Access Tower (CAT) at Space Launch Complex -41 (SLC-41) in preparation for Atlas V launches with Boeing’s Starliner spacecraft. The EES is a vital element for all crew launch vehicles, with the SLC-41 EES working with the traditional “slide wire” concept. (source: - more...)

Visual SAT-Flare Tracker 3D - Online

Thank you for using Visual SAT-Flare Tracker Online
In this page you can track satellites in real time, predict passes and flares.
(the 3D desktop version is still available for download)

This page is interactive so you can change the time by means of the following keys:

[s] Increase time by 1 second
[S] Decrease time by 1 second
[m] Increase time by 1 minute
[M] Decrease time by 1 minute
[h] Increase time by 1 hour
[H] Decrease time by 1 hour
[d] Increase time by 1 day
[D] Decrease time by 1 day
[0] Real time (reset time changes)
More options and commands are available through the ADVANCED button.

Earth Map Legend

Red Line Satellite's Orbit projected on the ground
Blue Line Ground Flare Track (it represents the location where the reflection hits the ground, which is where the flare brightness reaches its maximum.
Green Line Reflected ray that hits the ground generating the flare.
Black Line Shadow ground track (it represents the location where the satellite can be seen crossing either the Sun disk or the Moon disk)

Full Screen

Photo credit: Oleg Artemyev


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