RELAY 1 (A-15), 503
Orbit data source: Space-Track
RELAY 1 (A-15), 503 is a payload satellite owned by GSFC (US) that was launched on Thu, 13 Dec 1962 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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503 intel report (Beta)
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TLE from 1 day ago
0 RELAY 1 (A-15)
1 00503U 62068A 25200.28621257 -.00000023 00000-0 00000-0 0 9998
2 00503 47.5012 130.9755 2839017 175.0273 355.3749 7.78158013779564
TLE epoch observation values (Epoch: 2025-07-19T06:52:08.766Z)
Visualization orbit readout
Visualization observer readout
Orbital elements
Other satellites on launch #68 in the year 1962 (1962-12-13 UTC)
RELAY 1 (A-15) 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. |
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61 mins | 2025-07-20 18:12:31.693Z | 164.671° S | 2025-07-20 18:48:31.693Z | 116.509° SE | 27.29° | 2025-07-20 19:13:31.693Z | 67.46° ENE |
67 mins | 2025-07-20 21:26:31.693Z | 219.293° SW | 2025-07-20 22:11:31.693Z | 147.828° SSE | 44.496° | 2025-07-20 22:33:31.693Z | 60.784° ENE |
44 mins | 2025-07-21 01:04:31.693Z | 270.037° WNW | 2025-07-21 01:36:31.693Z | 359.304° N | 42.954° | 2025-07-21 01:48:31.693Z | 78.203° E |
24 mins | 2025-07-21 04:39:31.693Z | 299.096° NW | 2025-07-21 04:55:31.693Z | 200.865° SSW | 43.905° | 2025-07-21 05:03:31.693Z | 134.678° SE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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