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SOLRAD 1 (GREB), 46

Orbit data source: Space-Track

SOLRAD 1 (GREB), 46 is a payload satellite owned by NRL (US) in LEO that was launched on Wed, 22 Jun 1960 UTC via a THOR ABLESTAR 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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Identifier
46, 1960-007B
Orbit
LEO
Last TLE update
8 hours ago
Origin
Manufacturer
NRL
Mission
Defense Sigint
Bus & Motor
NRL 20", Unknown motor
Mass
19 kg wet, 19 kg dry
Launch date (UTC)
1960-06-22 (65 years ago)
Launch vehicle
THOR ABLESTAR
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Sphere, 0.3 m
Radar Cross Section
0.204 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 8 hours ago
0 SOLRAD 1 (GREB)
1    46U 60007B   25115.49655665  .00001830  00000-0  35052-3 0  9993
2    46  66.6881 286.0887 0204400 247.9283 110.0011 14.53871793396247
Epoch: 2025-04-25T11:55Z
Definitive object data (Epoch: 2025-04-25T11:55:02.494Z)
Latitude
-0.00004°
Longitude
-106.42451°
Altitude
767.33 km
Speed
7.443 km/s
True Right ascension
19h 04m 21s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude
-58.87628°
Longitude
117.91184°
Altitude
589.984 km
Speed
7.642 km/s
Apparent Right ascension
12h 54m 43s
Apparent Declination
-55° 35' 39"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
02:56:02
Azimuth
138.265° SSE
Elevation
-64.62°
Doppler factor
1
Orbital elements
Apogee altitude
856.298 km
Perigee altitude
566.478 km
Semi-major axis
7,089.525 km
Eccentricity
0.02044
Inclination
66.6881°
RAAN
286.0887°
Arg. of periapsis
247.9283°
True anomaly
112.18248°
Mean anomaly
110.0011°
Eccentric anomaly
111.09375°
Mean motion
3.63595 °/min
BSTAR
0.00035052
Orbital period
99.01 mins
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SOLRAD 1 (GREB) 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.
7 mins2025-04-25 20:42:13.307Z2.255° NNE2025-04-25 20:45:13.307Z36.541° NE17.404°2025-04-25 20:49:13.307Z85.99° E
8 mins2025-04-25 22:24:13.307Z326.271° NNW2025-04-25 22:28:13.307Z232.405° WSW44.107°2025-04-25 22:32:13.307Z159.683° S
9 mins2025-04-26 12:49:13.307Z203.185° SW2025-04-26 12:53:13.307Z136.007° SSE44.719°2025-04-26 12:58:13.307Z31.202° NE
6 mins2025-04-26 14:33:13.307Z284.472° WNW2025-04-26 14:36:13.307Z321.959° NNW17.976°2025-04-26 14:39:13.307Z355.883° N
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