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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.

Not visible in the next 10 days

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/42951?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/42951?theme=dark&initialShowStats=false

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Identifier

42951, 2017-059B

Orbit

GEO

Country

JP / JPN

Related business

Broadcasting Satellite System Corp. (JP)

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)

2017-09-29 (8 years ago)

Launch vehicle

ARIANE 5ECA

Launch site

French Guiana (FRGUI)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 12.3 m

Radar Cross Section

33.343 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 BSAT-4A
1 42951U 17059B   25261.74653854 -.00000370  00000-0  00000-0 0  9992
2 42951   0.0520   8.2061 0001135 102.2676 266.0330  1.00271591 29075

Epoch: 2025-09-18T17:55Z

TLE epoch observation values (Epoch: 2025-09-18T17:55:00.929Z)

Latitude

-0.02264°

Longitude

109.83746°

Altitude

35,786.494 km

Speed

3.075 km/s

True Right ascension

01h 05m 58s

True Declination

0° 01' 21"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

01:37:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,792.506 km

Perigee altitude

35,782.934 km

Semi-major axis

42,165.857 km

Eccentricity

0.00011

Inclination

0.052°

RAAN

8.2061°

Arg. of periapsis

102.2676°

True anomaly

266.02003°

Mean anomaly

266.033°

Eccentric anomaly

266.02651°

Mean motion

0.25067 °/min

Orbital period

1,436.15 mins

BSTAR

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Other satellites on launch #59 in the year 2017 (2017-09-29 UTC)

INTELSAT 37E, 42950

ARIANE 5 R/B, 42952

ARIANE 5 DEB (SYLDA), 42953 (Decayed)

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BSAT-4A Visibility

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BSAT-4A is likely not visible in the next few days.

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42951 neighbors

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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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out BSAT-4A, 42951 on other resources

View BSAT-4A, 42951 on NASA - NSSDCA Website

View BSAT-4A, 42951 on Heavens-Above

View BSAT-4A, 42951 on Keep Track

View BSAT-4A, 42951 on Celestrak

View BSAT-4A, 42951 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

BSAT-4A, 42951

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2025-09-18T17:55:00.929Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #59 in the year 2017 (2017-09-29 UTC)

BSAT-4A Visibility

42951 neighbors

Co-orbital & Co-planar RSOs

Check out BSAT-4A, 42951 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 15 hours ago