TELSTAR 2 (A-41), 573
Orbit data source: Space-Track
TELSTAR 2 (A-41), 573 is a payload satellite owned by AT&T (US) in HEO that was launched on Tue, 07 May 1963 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
573 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
USRelated business
Manufacturer
AT&T/BTL
Mission
Spacecraft
Bus & Motor
TSX, Unknown motor
Mass
79 kg wet, 79 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
SPHERE + ANT, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 TELSTAR 2 (A-41)
1 00573U 63013A 26264.27919981 -.00000010 00000-0 -49325-4 0 9994
2 00573 42.7606 243.1723 4013622 267.8846 285.1868 6.39280023592291Epoch: 2026-09-21T06:42Z
TLE epoch observation values (Epoch: 2026-09-21T06:42:02.863Z)
Latitude
21.46787°
Longitude
-62.59763°
Altitude
6,536.732 km
Speed
5.407 km/s
True Right ascension
02h 32m 18s
True Declination
21° 24' 12"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
16:13:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
10,809.236 km
Perigee altitude
964.013 km
Semi-major axis
12,264.761 km
Eccentricity
0.40136
Inclination
42.7606°
RAAN
243.1723°
Arg. of periapsis
267.8846°
True anomaly
239.54814°
Mean anomaly
285.1868°
Eccentric anomaly
262.39283°
Mean motion
1.59792 °/min
Orbital period
225.29 mins
BSTAR
-0.000049325
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #13 in the year 1963 (1963-05-07 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.TELSTAR 2 (A-41) Visibility forecast
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 126 mins | 2026-09-23 01:18:47.187Z | 225.444° WSW | 2026-09-23 01:58:47.187Z | 143.871° SSE | 80.208° | 2026-09-23 03:24:47.187Z | 74.139° E |
| 131 mins | 2026-09-23 05:29:47.187Z | 277.674° WNW | 2026-09-23 06:52:47.187Z | 192.607° SSW | 88.544° | 2026-09-23 07:40:47.187Z | 121.111° SE |
| 87 mins | 2026-09-23 10:06:47.187Z | 301.409° NW | 2026-09-23 11:07:47.187Z | 254.105° W | 36.198° | 2026-09-23 11:33:47.187Z | 195.113° SSW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
|---|