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.
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42951 intel report (Beta)
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Edit Public Description
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, 12.3 m
Radar Cross Section
33.343 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 BSAT-4A
1 42951U 17059B 25243.26186494 -.00000346 00000-0 00000-0 0 9993
2 42951 0.0503 311.8178 0002202 153.7622 78.2132 1.00270465 28897Epoch: 2025-08-31T06:17Z
TLE epoch observation values (Epoch: 2025-08-31T06:17:05.13Z)
Latitude
-0.02575°
Longitude
109.85754°
Altitude
35,784.529 km
Speed
3.075 km/s
True Right ascension
12h 15m 15s
True Declination
0° 01' 33"
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
05:33:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,797.32 km
Perigee altitude
35,778.75 km
Semi-major axis
42,166.172 km
Eccentricity
0.00022
Inclination
0.0503°
RAAN
311.8178°
Arg. of periapsis
153.7622°
True anomaly
78.2379°
Mean anomaly
78.2132°
Eccentric anomaly
78.22555°
Mean motion
0.25067 °/min
Orbital period
1,436.17 mins
BSTAR
0
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Other satellites on launch #59 in the year 2017 (2017-09-29 UTC)
BSAT-4A Visibility
Observer location: undefined°, undefined°
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. |
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42951 neighbors
Authenticating...
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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Authenticating...
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