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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 (66 years ago)

Launch vehicle

THOR ABLESTAR

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

SPHERE, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 SOLRAD 1 (GREB)
1    46U 60007B   26306.83675587  .00000238  00000-0  64188-4 0  9993
2    46  66.6882 210.1708 0196003 191.3071 168.3607 14.55030922477176

Epoch: 2026-11-02T20:04Z

TLE epoch observation values (Epoch: 2026-11-02T20:04:55.707Z)

Latitude

-0.00004°

Longitude

-133.16938°

Altitude

847.578 km

Speed

7.358 km/s

True Right ascension

14h 00m 40s

True Declination

0° 00' 00"

Sunlit

Object was in daylight 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

03:49:20

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

846.504 km

Perigee altitude

568.738 km

Semi-major axis

7,085.758 km

Eccentricity

0.0196

Inclination

66.6882°

RAAN

210.1708°

Arg. of periapsis

191.3071°

True anomaly

168.8032°

Mean anomaly

168.3607°

Eccentric anomaly

168.583°

Mean motion

3.63885 °/min

Orbital period

98.93 mins

BSTAR

0.000064188

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

THOR ABLESTAR R/B, 47

TRANSIT 2A, 45

THOR ABLESTAR DEB, 841 (Decayed)

THOR ABLESTAR DEB, 840 (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.
4 mins	2026-11-03 17:40:25.146Z	123.344° SE	2026-11-03 17:42:25.146Z	101.882° ESE	12.558°	2026-11-03 17:44:25.146Z	80.57° E
9 mins	2026-11-03 19:19:25.146Z	208.429° SW	2026-11-03 19:23:25.146Z	10.716° NNE	85.684°	2026-11-03 19:28:25.146Z	28.825° NE
5 mins	2026-11-03 21:03:25.146Z	289.223° WNW	2026-11-03 21:05:25.146Z	313.048° NW	16.298°	2026-11-03 21:08:25.146Z	349.074° N
7 mins	2026-11-04 03:59:25.146Z	345.369° N	2026-11-04 04:02:25.146Z	38.555° NE	48.803°	2026-11-04 04:06:25.146Z	130.299° SE

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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: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-11-02T20:04:55.707Z)

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: 12 hours ago