RELAY 2, 737
Orbit data source: Space-Track
RELAY 2, 737 is a payload satellite owned by GSFC (US) that was launched on Tue, 21 Jan 1964 UTC via a THOR DELTA B launch vehicle from the Air Force Eastern Test Range (AFETR). 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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737 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Last TLE update
1 day ago
Origin
Manufacturer
RCA/East Windsor
Mission
Civil Communications
Bus & Motor
RELAY, Unknown motor
Mass
83 kg wet, 83 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Oct Cyl, 0.81 m
Radar Cross Section
0.652 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & history
TLE from 1 day ago
0 RELAY 2
1 00737U 64003A 25128.21253978 -.00000011 00000-0 00000-0 0 9998
2 00737 46.4675 81.5571 2599368 287.2435 46.1959 7.39541668656135Epoch: 2025-05-08T05:06Z
Definitive object data (Epoch: 2025-05-08T05:06:03.436Z)
Latitude
-0.00003°
Longitude
138.75648°
Altitude
3,258.702 km
Speed
6.85 km/s
True Right ascension
05h 26m 13s
True Declination
0° 00' 00"
Sunlit
Visualization TLE readout
Latitude
-10.10472°
Longitude
-32.70312°
Altitude
4,217.19 km
Speed
6.28 km/s
Apparent Right ascension
19h 51m 55s
Apparent Declination
-34° 00' 05"
Sunlit
Visualization observer readout
Local Sidereal Time
14:12:33
Azimuth
120.002° SE
Elevation
-17.557°
Doppler factor
1
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Other satellites on launch #3 in the year 1964 (1964-01-21 UTC)
RELAY 2 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. |
|---|---|---|---|---|---|---|---|
| 75 mins | 2025-05-09 07:58:47.608Z | 303.135° NW | 2025-05-09 08:43:47.608Z | 242.581° WSW | 37.245° | 2025-05-09 09:13:47.608Z | 175.598° S |
| 37 mins | 2025-05-09 20:05:47.608Z | 143.712° SSE | 2025-05-09 20:19:47.608Z | 101.326° ESE | 21.427° | 2025-05-09 20:42:47.608Z | 61.9° ENE |
| 73 mins | 2025-05-09 23:21:47.608Z | 222.923° SW | 2025-05-09 23:44:47.608Z | 146.455° SSE | 44.518° | 2025-05-10 00:34:47.608Z | 63.666° ENE |
| 89 mins | 2025-05-10 02:52:47.608Z | 274.345° WNW | 2025-05-10 03:31:47.608Z | 4.491° NNE | 44.395° | 2025-05-10 04:21:47.608Z | 99.765° ESE |
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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