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
9 hours 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 9 hours ago
0 RELAY 2
1 00737U 64003A 25187.55780108 -.00000017 00000-0 00000-0 0 9996
2 00737 46.4709 14.7642 2597164 353.6740 3.6281 7.39537248660522Epoch: 2025-07-06T13:23Z
TLE epoch observation values (Epoch: 2025-07-06T13:23:14.013Z)
Latitude
-0.00003°
Longitude
-110.82399°
Altitude
1,870.787 km
Speed
7.8 km/s
True Right ascension
00h 59m 03s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
-27.26377°
Longitude
97.97993°
Altitude
6,344.347 km
Speed
5.184 km/s
Apparent Right ascension
16h 35m 56s
Apparent Declination
-42° 16' 57"
Sunlit
Visualization observer readout
Local Sidereal Time
10:05:31
Azimuth
121.717° SE
Elevation
-30.449°
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. |
|---|---|---|---|---|---|---|---|
| 76 mins | 2025-07-06 23:45:27.344Z | 298.637° NW | 2025-07-07 00:15:27.344Z | 232.55° WSW | 38.738° | 2025-07-07 01:01:27.344Z | 167.979° S |
| 4 mins | 2025-07-07 12:15:27.344Z | 115.779° SE | 2025-07-07 12:16:27.344Z | 110.509° ESE | 10.797° | 2025-07-07 12:19:27.344Z | 95.948° ESE |
| 34 mins | 2025-07-07 15:28:27.344Z | 226.389° WSW | 2025-07-07 15:39:27.344Z | 129.92° SE | 44.237° | 2025-07-07 16:02:27.344Z | 62.466° ENE |
| 58 mins | 2025-07-07 18:54:27.344Z | 280.66° WNW | 2025-07-07 19:11:27.344Z | 9.902° NNE | 43.93° | 2025-07-07 19:52:27.344Z | 97.109° ESE |
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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