SKYNET 4B, 19687
Orbit data source: Space-Track
SKYNET 4B, 19687 is a payload satellite owned by UK MoD (UK) in GEO that was launched on Sun, 11 Dec 1988 UTC via an ARIANE 44LP 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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19687 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Last TLE update
1 day ago
Origin
Manufacturer
BAe
Mission
Non-operational Defense Communications
Bus & Motor
ECS, TE-M-700-19
Mass
1,433 kg wet, 655 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Hex Poly + 2 Pan, 16 m
Radar Cross Section
11.617 m², Large (>1 m²)
Expand to show TLE details & history
TLE from 1 day ago
0 SKYNET 4B
1 19687U 88109A 25183.53812476 .00000088 00000-0 00000-0 0 9998
2 19687 13.4322 339.4057 0002807 259.3325 91.8132 0.99670551114670Epoch: 2025-07-02T12:54Z
TLE epoch observation values (Epoch: 2025-07-02T12:54:53.979Z)
Latitude
-2.04732°
Longitude
-143.72212°
Altitude
35,956.163 km
Speed
3.069 km/s
True Right ascension
22h 03m 16s
True Declination
-2° 02' 43"
Sunlit
Visualization orbit readout
Latitude
-2.26762°
Longitude
-144.6659°
Altitude
35,955.877 km
Speed
3.069 km/s
Apparent Right ascension
21h 40m 33s
Apparent Declination
-8° 26' 17"
Sunlit
Visualization observer readout
Local Sidereal Time
00:42:30
Azimuth
231.676° WSW
Elevation
25.96°
Doppler factor
1
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19687 neighbors
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Other satellites on launch #109 in the year 1988 (1988-12-11 UTC)
SKYNET 4B Visibility forecast
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. |
|---|---|---|---|---|---|---|---|
| 1440 mins | 2025-07-03 12:55:45.635Z | 231.663° WSW | 2025-07-03 19:59:45.635Z | 245.806° WSW | 31.736° | 2025-07-04 12:55:45.635Z | 233.486° WSW |
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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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 |
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