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
2 days 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 2 days 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
15.32277°
Longitude
-97.79369°
Altitude
2,030.901 km
Speed
7.682 km/s
Apparent Right ascension
03h 54m 20s
Apparent Declination
-10° 59' 58"
Sunlit
Visualization observer readout
Local Sidereal Time
19:46:10
Azimuth
77.279° E
Elevation
-31.459°
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. |
|---|---|---|---|---|---|---|---|
| 27 mins | 2025-07-08 14:08:34.585Z | 199.345° SSW | 2025-07-08 14:18:34.585Z | 123.687° SE | 37.244° | 2025-07-08 14:35:34.585Z | 61.066° ENE |
| 47 mins | 2025-07-08 17:33:34.585Z | 266.935° W | 2025-07-08 17:46:34.585Z | 355.899° N | 43.967° | 2025-07-08 18:20:34.585Z | 80.825° E |
| 72 mins | 2025-07-08 21:00:34.585Z | 295.649° NW | 2025-07-08 21:23:34.585Z | 202.988° SW | 44.975° | 2025-07-08 22:12:34.585Z | 130.307° SE |
| 70 mins | 2025-07-09 00:31:34.585Z | 294.755° NW | 2025-07-09 00:59:34.585Z | 241.003° WSW | 32.153° | 2025-07-09 01:41:34.585Z | 184.434° SSW |
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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