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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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https://www.satcat.com/sats-embedded/46?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

46, 1960-007B

Orbit

LEO

Country

Related business

United States Navy (US)

Manufacturer

NRL

Mission

Spacecraft

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

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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Last TLE update: 8 hours ago

TLE from 8 hours ago

0 SOLRAD 1 (GREB)
1 00046U 60007B   25341.84863205  .00001184  00000-0  24048-3 0  9999
2 00046  66.6896  29.7301 0188480  76.6482 285.5566 14.54460388429170

Epoch: 2025-12-07T20:22Z

TLE epoch observation values (Epoch: 2025-12-07T20:22:01.809Z)

Latitude

0.00003°

Longitude

7.36645°

Altitude

679.764 km

Speed

7.535 km/s

True Right ascension

01h 58m 55s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

02:47:06

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

843.062 km

Perigee altitude

575.887 km

Semi-major axis

7,087.611 km

Eccentricity

0.01885

Inclination

66.6896°

RAAN

29.7301°

Arg. of periapsis

76.6482°

True anomaly

283.46314°

Mean anomaly

285.5566°

Eccentric anomaly

284.51114°

Mean motion

3.63742 °/min

Orbital period

98.97 mins

BSTAR

0.00024048

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Other satellites on launch #7 in the year 1960 (1960-06-22 UTC)

TRANSIT 2A, 45

THOR ABLESTAR R/B, 47

THOR ABLESTAR DEB, 840 (Decayed)

THOR ABLESTAR DEB, 841 (Decayed)

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SOLRAD 1 (GREB) Visibility forecast

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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 mins	2025-12-08 04:44:48.050Z	188.968° SSW	2025-12-08 04:48:48.050Z	98.8° ESE	37.692°	2025-12-08 04:51:48.050Z	42.422° NE
4 mins	2025-12-08 06:28:48.050Z	286.101° WNW	2025-12-08 06:30:48.050Z	318.944° NNW	15.598°	2025-12-08 06:32:48.050Z	348.767° N
6 mins	2025-12-08 13:24:48.050Z	6.522° NNE	2025-12-08 13:26:48.050Z	46.775° ENE	26.82°	2025-12-08 13:30:48.050Z	113.963° SE
5 mins	2025-12-08 15:06:48.050Z	285.511° WNW	2025-12-08 15:08:48.050Z	244.683° WSW	24.518°	2025-12-08 15:11:48.050Z	197.47° SSW
5 mins	2025-12-09 03:51:48.050Z	145.608° SSE	2025-12-09 03:53:48.050Z	112.755° SE	18.928°	2025-12-09 03:56:48.050Z	64.972° ENE

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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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out SOLRAD 1 (GREB), 46 on other resources

View SOLRAD 1 (GREB), 46 on NASA - NSSDCA Website

View SOLRAD 1 (GREB), 46 on Heavens-Above

View SOLRAD 1 (GREB), 46 on Keep Track

View SOLRAD 1 (GREB), 46 on Celestrak

View SOLRAD 1 (GREB), 46 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

SOLRAD 1 (GREB), 46

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2025-12-07T20:22:01.809Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #7 in the year 1960 (1960-06-22 UTC)

SOLRAD 1 (GREB) Visibility forecast

Co-orbital & Co-planar RSOs

Check out SOLRAD 1 (GREB), 46 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago