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ERS 9, 635

Orbit data source: Space-Track

ERS 9, 635 is a payload satellite in LEO that was launched on Fri, 19 Jul 1963 UTC via an ATLAS AGENA B launch vehicle from the Air Force Western Test Range (AFWTR). 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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Identifier
635, 1963-030B
Orbit
LEO
Last TLE update
1 day ago
Origin
Manufacturer
TRW
Mission
Defense Technology
Bus & Motor
TRS, Unknown motor
Mass
1 kg wet, 1 kg dry
Launch date (UTC)
1963-07-19 (62 years ago)
Launch vehicle
ATLAS AGENA B
Launch site
Air Force Western Test Range (AFWTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Trap Box, 0.2 m
Radar Cross Section
0.032 m², Small (<0.1 m²)

Expand to show TLE details & history

TLE from 1 day ago
0 ERS 9
1 00635U 63030B   25138.47948285  .00000033  00000-0  15155-1 0  9996
2 00635  88.4159 236.8260 0047516  67.0252 293.5602  8.57946960936596
Epoch: 2025-05-18T11:30Z
TLE epoch observation values (Epoch: 2025-05-18T11:30:27.318Z)
Latitude
0.00001°
Longitude
-172.19368°
Altitude
3,684.34 km
Speed
6.3 km/s
True Right ascension
15h 47m 18s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
-73.40041°
Longitude
-177.55271°
Altitude
3,764.349 km
Speed
6.259 km/s
Apparent Right ascension
11h 06m 13s
Apparent Declination
-68° 42' 48"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
20:56:23
Azimuth
200.61° SSW
Elevation
-56.39°
Doppler factor
1
Orbital elements
Apogee altitude
3,746.822 km
Perigee altitude
3,651.057 km
Semi-major axis
10,077.077 km
Eccentricity
0.00475
Inclination
88.4159°
RAAN
236.826°
Arg. of periapsis
67.0252°
True anomaly
Unknown
Mean anomaly
293.5602°
Eccentric anomaly
Unknown
Mean motion
2.14556 °/min
Orbital period
167.79 mins
BSTAR
0.015155
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ERS 9 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.
32 mins2025-05-19 16:16:11.792Z9.205° NNE2025-05-19 16:32:11.792Z68.822° E27.449°2025-05-19 16:48:11.792Z127.748° SE
36 mins2025-05-19 19:04:11.792Z356.929° N2025-05-19 19:22:11.792Z271.022° WNW43.876°2025-05-19 19:40:11.792Z197.176° SSW
17 mins2025-05-19 21:56:11.792Z335.344° NNW2025-05-19 22:04:11.792Z307.38° NW16.575°2025-05-19 22:13:11.792Z276.682° WNW
33 mins2025-05-20 05:32:11.792Z144.711° SSE2025-05-20 05:48:11.792Z76.682° E39.209°2025-05-20 06:05:11.792Z6.261° NNE
33 mins2025-05-20 08:20:11.792Z216.017° SW2025-05-20 08:36:11.792Z284.167° WNW35.33°2025-05-20 08:53:11.792Z353.41° N
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