BSAT-4A, 42951
Orbit data source: Space-Track
BSAT-4A, 42951 is a payload satellite owned by BSAT (JP) in GEO that was launched on Fri, 29 Sep 2017 UTC via an ARIANE 5ECA launch vehicle from the French Guiana (FRGUI). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
42951 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
JP / JPNRelated business
Manufacturer
SS/Loral (MDA)
Mission
Operational Commercial Communications
Bus & Motor
LS-1300, R-4D
Mass
3,520 kg wet, ~1,800 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 12.4 m
Radar Cross Section
33.343 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 BSAT-4A
1 42951U 17059B 26268.00344062 .00000000 00000-0 00000-0 0 9996
2 42951 0.0260 68.1629 0001058 44.8759 1.8679 1.00268036 32804Epoch: 2026-09-25T00:04Z
TLE epoch observation values (Epoch: 2026-09-25T00:04:57.269Z)
Latitude
-0.00663°
Longitude
109.81531°
Altitude
35,782.692 km
Speed
3.075 km/s
True Right ascension
07h 39m 32s
True Declination
0° 00' 24"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
09:35:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,793.178 km
Perigee altitude
35,784.255 km
Semi-major axis
42,166.853 km
Eccentricity
0.00011
Inclination
0.026°
RAAN
68.1629°
Arg. of periapsis
44.8759°
True anomaly
1.8683°
Mean anomaly
1.8679°
Eccentric anomaly
1.8681°
Mean motion
0.25066 °/min
Orbital period
1,436.2 mins
BSTAR
0
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #59 in the year 2017 (2017-09-29 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.BSAT-4A Visibility
Loading observer location...
Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| BSAT-4A is likely not visible in the next few days. |
Loading historical data...
42951 neighbors
Authenticating...
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|