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INMARSAT 2-F3, 21814

Orbit data source: Space-Track

INMARSAT 2-F3, 21814 is a payload satellite owned by INMARSAT (UK) in GEO that was launched on Mon, 16 Dec 1991 UTC via an ARIANE 44L 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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<iframe src="https://www.satcat.com/sats-embedded/21814?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/21814?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21814, 1991-084B

Orbit

GEO

Last TLE update

16 hours ago

Origin

International Maritime Satellite Organization (IM)

Manufacturer

BAe

Mission

Non-operational Civil Communications

Bus & Motor

EUROSTAR 1000, R-4D-11

Mass

1,310 kg wet, 624 kg dry

Launch date (UTC)

1991-12-16 (34 years ago)

Launch vehicle

ARIANE 44L

Launch site

French Guiana (FRGUI)

Object type

Payload

Rocket body

Debris

Shape & HBR

Hex Poly + 2 Pan, 7.5 m

Radar Cross Section

8.561 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 16 hours ago

0 INMARSAT 2-F3
1 21814U 91084B   25232.30800225 -.00000136  00000-0  00000-0 0  9993
2 21814  13.8732  15.3320 0014643  87.3303 279.2723  0.96061868120287

Epoch: 2025-08-20T07:23Z

TLE epoch observation values (Epoch: 2025-08-20T07:23:31.394Z)

Latitude

1.52872°

Longitude

-58.18788°

Altitude

36,999.252 km

Speed

3.032 km/s

True Right ascension

01h 26m 19s

True Declination

1° 31' 38"

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

14:46:37

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

37,074.171 km

Perigee altitude

36,947.102 km

Semi-major axis

43,388.773 km

Eccentricity

0.00146

Inclination

13.8732°

RAAN

15.332°

Arg. of periapsis

87.3303°

True anomaly

279.10665°

Mean anomaly

279.2723°

Eccentric anomaly

279.18948°

Mean motion

0.24015 °/min

Orbital period

1,499.08 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #84 in the year 1991 (1991-12-16 UTC)

TELECOM 2A, 21813

ARIANE 44L R/B, 21815

ARIANE 44L DEB (SPELDA), 21818

INMARSAT 2-F3 Visibility forecast

Observer location: undefined°, undefined°
Set 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.
1440 mins	2025-08-20 23:48:51.263Z	139.167° SSE	2025-08-21 14:20:51.263Z	129.006° SE	36.939°	2025-08-21 23:48:51.263Z	154.144° SSE

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21814 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 ascending order

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 ascending order

Check out INMARSAT 2-F3, 21814 on other resources

View INMARSAT 2-F3, 21814 on NASA - NSSDCA Website

View INMARSAT 2-F3, 21814 on Heavens-Above

View INMARSAT 2-F3, 21814 on Keep Track

View INMARSAT 2-F3, 21814 on Celestrak

View INMARSAT 2-F3, 21814 on Gunter's Space Page

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

INMARSAT 2-F3, 21814

Orbit data source: Space-Track

Expand to show TLE details & history

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2025-08-20T07:23:31.394Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #84 in the year 1991 (1991-12-16 UTC)

INMARSAT 2-F3 Visibility forecast

21814 neighbors

Co-orbital & Co-planar RSOs

Check out INMARSAT 2-F3, 21814 on other resources

Documentation