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Time Control


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
Observation of the week: Bright Flare from SKYMED 4 (Mag. -0.5) observed on 02/12/2016 UTC by RL47. More...

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

03/12/2016 - Up to 15 orbital launches are set to take place during a very busy December, not counting the opening mission of the month that resulted in the loss of the Progress MS-04 cargo ship that was set to dock with the ISS over the weekend. This month is likely to include the highly anticipated return to flight of SpaceX’s Falcon 9 rocket. (source: - more...)

01/12/2016 - The Russian Federal Space Agency (Roscosmos) launched the Progress MS-04/65P resupply mission to the ISS on Thursday at 09:51:52 EST (14:51:52 UTC). The mission was the third of three Russian resupply flights to Station this year and the first of two missions scheduled to launch to ISS in the opening 9 days of December. However, an anomaly during third stage flight resulted in the loss of the mission. (source: - more...)

30/11/2016 - The United Launch Alliance (ULA) has announced an innovative site called “RocketBuilder” which allows customers – and indeed the public – to build a tailormade rocket for their payload. The site will automatically configure a launch vehicle and provide all the associated costs and benefits. (source: - more...)

30/11/2016 - ESA's new ExoMars orbiter has tested its suite of instruments in orbit for the first time, hinting at a great potential for future observations. The Trace Gas Orbiter, or TGO, a joint endeavour between ESA and Roscosmos, arrived at Mars on 19 October. Its elliptical orbit takes it from 230-310 km above the surface to around 98 000 km every 4.2 days. It spent the last two orbits during 20-28 November testing its four science instruments for the first time since arrival, and making important calibr ... (source: - more...)

29/11/2016 - While a great deal of attention was paid to ISS during its construction phase, the Station – a National Lab of the United States – has been entrenched in its all-important utilization phase for the last five years, hosting thousands of astronomy, astrobiology, and physical and medical sciences experiments. Now, so great is the research demand on Station that the Program is facing a backlog of research and development requests as well as a shortage of crew time for those petitions. (source: - more...)

28/11/2016 - NASA has decided to end operations on the International Space Station Rapid Scatterometer (ISS-RapidScat) Earth science instrument, following attempts to return to life after a power issue. Despite the conclusion of its life, the instrument had already surpassed its original decommissioning date. (source: - more...)

25/11/2016 - The European Space Agency’s fleet of Sentinel satellites are busy checking into urban ground movements, using San Fransico as a case study. Their findings reveal the city’s Millennium Tower skyscraper is slowly sinking. The news comes as a new Sentinel satellite prepares for launch early next year. (source: - more...)

23/11/2016 - As part of the normal review process, NASA has updated the NASA Advisory Council (NAC) on the status of the International Space Station – including its overall health, upcoming visiting vehicle schedule, commercial resupply efforts, and battery deliveries and associated installation EVAs that will upgrade the Station into its next phase of operation and propel its lifetime to 2024. (source: - more...)

22/11/2016 - China orbited its fourth tracking and data relay satellite in the Tianlian-1 range known as ‘Sky Link’ on Tuesday. The launch took place at 15:24 UTC from the Xichang Satellite Launch Center in Sichuan Province, utilizing a Long March 3C/G2 rocket. (source: - more...)

22/11/2016 - In preparation for a December return to launch operations, SpaceX has delivered one Falcon 9 rocket to its Vandenberg launch site, while another undergoes testing at the company’s McGregor test center in Texas. Pending the conclusion of the Amos-6 failure investigation, SpaceX will be primed to launch two missions in December. (source: - more...)

21/11/2016 - After nearly one month at the International Space Station, Orbital ATK s Cygnus OA-5 spacecraft has unberthed for departure operations on Monday morning. The to-date flawless Alan Poindexter Cygnus unberthed from the nadir port of the Unity (Node-1) module and was released from the Station s robotic arm at 08:22 EST. (source: - more...)

19/11/2016 - An Atlas V rocket has successfully deployed a next-generation weather satellite for the US National Oceanic and Atmospheric Administration Saturday evening. The United Launch Alliance (ULA) rocket launched from SLC-41 at Cape Canaveral at the end of a one hour-long window at 18:42 local time (23:42 UTC). (source: - more...)

18/11/2016 - The Chinese spacecraft Shenzhou-11 – and most importantly its crew of two taikonauts – have successfully returned to Earth after China’s longest crewed mission into space. The spacecraft undocked from the Tiangong-2 space module on Thursday, ahead of a Friday touchdown in Mongolia. (source: - more...)

17/11/2016 - Following quick on the heels of the Soyuz MS-02 launch on 19 October, the Russian Federal Space Agency (Roscosmos) has launched the Soyuz MS-03 spacecraft and a new three person crew for Expeditions 50/51 to the International Space Station. The flight launched at 20:20 GMT (15:20 EST) on Thursday 17 November 2016, beginning a two-day orbital rendezvous with the orbital laboratory. (source: - more...)

16/11/2016 - An Ariane 5 ES rocket successfully launched four Galileo satellites from the European Spaceport in Kourou, French Guiana on Thursday. The launch of the FM-12 through FM-14 involved the first use of the Ariane launch vehicle for a Galileo launch, following the previous use of the Soyuz rocket. Launch took place on schedule at 13:06 UTC. (source: - more...)

15/11/2016 - A top level overview at NASA’s Advisory Council (NAC) has shown most of the Space Launch System (SLS) and Orion spacecraft flows are on track for a 2018 launch of Exploration Mission -1 (EM-1). However, engineers are continuing to battle against critical path issues with the European Service Module and flight software. (source: - more...)

14/11/2016 - Citing exceptional and beyond performance expectations on the Return To Flight mission of their Antares rocket during the OA-5 launch of the Cygnus resupply craft to the International Space Station last month, Orbital ATK sat down with to discuss the realignment of the company s upcoming OA-7 mission early next year from Antares to Atlas V – a move that will provide critical upmass capabilities for NASA to the Station. (source: - more...)

11/11/2016 - China launched the first satellite of a new orbital meteorological constellation. The Yunhai-1 (01) was launched at 23:14 UTC by a Long March-2D (Chang Zheng-2D) launch vehicle from the LC43/603 launch complex of the Jiuquan Satellite Launch Center. The launch comes two days after the launch of the second Long March-11 launch vehicle carrying the XPNAV-1 pulsar navigation satellite and other small satellites. (source: - more...)

10/11/2016 - The United Launch Alliance (ULA) Atlas V rocket – interrupted by a wildfire – finally conducted a rare commercial launch on Friday, tasked with orbiting the WorldView-4 Earth-imaging satellite in a mission from Vandenberg Air Force Base, California. The launch was set to take place in September, prior to the standdown. (source: - more...)

09/11/2016 - The Chinese have conducted the second launch of the Long March-11 solid fuel rocket – this time carrying five small satellites into orbit. The launch took place from a mobile launch platform from the Jiuquan satellite Launch Center at 23:42 UTC on Wednesday. (source: - more...)

08/11/2016 - As SpaceX nears completion of its investigation into the AMOS-6 pad conflagration on 1 September 2016, the company is firmly looking toward Return To Flight (RTF) of its Falcon 9 workhorse and realigning its contracted resupply missions to the International Space Station with NASA. With those flights looking to resume in January 2017, SpaceX s external cargo manifest for its next eleven resupply flights is being finalized by the ISS Program. (source: - more...)

07/11/2016 - NASA is continuing to work towards the historic maiden launch of the Space Launch System (SLS), with the rocket still on schedule to make a 2018 debut. However, the passenger – the EM-1 Orion – is requiring the assistance of a working group, specifically focused on the European Service Module (ESM), which continues to struggle with schedule issues. (source: - more...)

04/11/2016 - With booster casting operations for SLS s EM-1 mission well underway at Orbital ATK s manufacturing facility in Utah, the company is looking ahead in terms of how the boosters … (source: - more...)

02/11/2016 - China has successfully conducted the maiden launch of its Long March-5 (Chang Zheng-5) rocket on Thursday, after years of intense development to create a launch vehicle capable of orbiting heavy payload to geosynchronous and low Earth orbit. The launch occurred at 12:43 UTC on Thursday after several holds. (source: - more...)

01/11/2016 - Japan has launched the Himawari 9 weather satellite on Wednesday afternoon local time, with the aid of its H-IIA rocket. Liftoff from the Tanegashima Space Centre, in Japan’s Osumi Islands, was on schedule at 15:20 local time (06:20 UTC), which was the opening of an available window of two-hour, 58-minutes. (source: - more...)

31/10/2016 - As SpaceX narrows on a second stage COPV (Composite Overwrapped Pressure Vessel) as the cause of the AMOS-6 static fire pad failure on 1 September, the company is pressing ahead with hot fire operations on a new first stages at its McGregor, Texas, facility. The new booster is set to power what SpaceX hopes will be a December mission from the soon-to-be-christened LC-39A at the Kennedy Space Center in Florida. (source: - more...)

29/10/2016 - Under the command of Russian cosmonaut Anatoly Ivanishin, Soyuz MS-01 undocked from the ISS on Saturday. With NASA astronaut Kate Rubins and Japanese astronaut Takuya Onishi onboard, the trio successfully landed on the steppes of Kazakhstan at 11:59 p.m Eastern. (source: - more...)

28/10/2016 - NASA’s monster rocket will evolve into an even larger vehicle early in her lifetime, as the Block 1 rocket grows into the workhorse known as the Block 1B. With a large increase in capability – and height – the Block 1B will require a revamp of numerous elements of the KSC ground systems, ranging from major changes to the new Mobile Launcher, through to need for a new LH2 storage sphere at the pad. (source: - more...)

26/10/2016 - An investigation into the water leak in Tim Kopra’s Extravehicular Mobility Unit (EMU) – which forced the early termination of EVA-35 in January – has revealed no hardware issues with the suit. The news comes as the ISS gears up for a series of critical EVAs that will replace the batteries on the Station’s solar arrays. (source: - more...)

23/10/2016 - Orbital ATK’s latest Cygnus resupply ship completed rendezvous and capture operations with the International Space Station (ISS) on Sunday morning. The OA-5 Cygnus – packed with equipment and supplies for the crew of the orbital outpost – had to wait her turn to arrive, allowing for the docking of the Soyuz MS-02 spacecraft on Friday. (source: - more...)

20/10/2016 - Europe's second attempt at reaching the Mars surface appeared in peril Thursday as initial analysis suggested a lander dubbed "Schiaparelli", a test-run for a future rover, may have plummeted to its demise. While holding out faint hope, ground controllers said it seemed the paddling pool-sized lander's parachute may have been discarded too early, and its fall-breaking thrusters switched off too soon. Schiaparelli fell silent seconds before its scheduled touchdown, while its mothership Trace Gas ... (source: - more...)

19/10/2016 - After a seven month cruise between worlds, ESA and Russia’s Trace Gas Orbiter (TGO) and the Italian Space Agency s Schiaparelli lander arrived for their crucial orbit insertion burn (TGO) and landing (Schiaparelli) on Mars. Schiaparelli s trip to the surface gained a large amount of data, but likely suffered a crash landing. However, TGO’s Mars Orbit Insertion was successfully completed. (source: - more...)

18/10/2016 - The Chinese spacecraft Shenzhou-11 – and its crew of two taikonauts – has successfully docked with the Tiangong-2 space module at 19:24 UTC. The docking begins a month long mission in which the crew will conduct a series of experiments aimed at progressing China’s ambitions in space. (source: - more...)

18/10/2016 - After nearly a month long delay to fix a technical issue with the spacecraft, the Russian Federal Space Agency s Soyuz MS-02 human-rated spacecraft was launched three new crew members for Expedition 49/50 crews to the International Space Station on Wednesday. The launch, via a Soyuz FG, occurred at 08:05 GMT (04:05 EDT) on October 19 to kick off a two-day orbital rendezvous with the Station. (source: - more...)

17/10/2016 - Orbital ATK’s Antares rocket returned to flight in a new configuration on Monday, two years after its previous mission ended in an explosion seconds after liftoff. Monday’s launch took place from the Mid-Atlantic Regional Spaceport on Wallops Island, Virginia – at the end of a five-minute window at 19:45 EDT (23:45 UTC). (source: - more...)

16/10/2016 - Following weeks of secrecy, China has launched its sixth crewed space mission on Sunday. The launch of Jing Haipeng and Chen Dong on Shenzhou-11 took place at 23:30… (source: - more...)

13/10/2016 - After months of speculation into changes relating to the OML (Outer Mold Line) for the Atlas V and Starliner design, United Launch Alliance (ULA) and Boeing finally revealed an updated aerodynamic configuration that provides an aeroskirt aft of the spacecraft to counter loads margins and return the stresses on the stack into acceptable flight levels. (source: - more...)

12/10/2016 - International Launch Services (ILS) is continuing to plan out its future manifest by announcing two new missions via the signing of launch services contracts. The missions both involve EUTELSAT birds, via the first use of a first commercial contract incorporating the use of the newly announced Proton Medium rocket and the first commercial shared launch using a Proton Breeze M with the EUTELSAT 5 West B satellite and MEV-1. (source: - more...)

11/10/2016 - When NASA’s next Mars rover – Mars 2020 – arrives at the red planet in four years, it will sport a new and upgraded vision to aide its… (source: - more...)

10/10/2016 - The next Cygnus spacecraft is currently undergoing final processing with her Antares launch vehicle, a key milestone ahead of the upcoming launch to the International Space Station (ISS), which is now set to take place on Friday. The OA-5 mission will mark the first time the extended Cygnus spacecraft has flown with the upgraded Antares and the Castor 30XL Upper Stage. (source: - more...)

26/09/2016 - NASA has confirmed statistically significant evidence from the Hubble Space Telescope indicating the presence of salty watery ejecta plumes from the Jovian moon Europa. The announcement lends further… (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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