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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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Iframe URL

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

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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

TLE from 8 hours ago

0 SOLRAD 1 (GREB)
1 00046U 60007B   26175.19864195  .00000445  00000-0  10023-3 0  9999
2 00046  66.6865 209.1265 0202105 287.4390  70.4716 14.54881198458020

Epoch: 2026-06-24T04:46Z

TLE epoch observation values (Epoch: 2026-06-24T04:46:02.664Z)

Latitude

-0.00004°

Longitude

-134.74391°

Altitude

666.59 km

Speed

7.548 km/s

True Right ascension

13h 56m 30s

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

23:49:25

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

851.324 km

Perigee altitude

564.891 km

Semi-major axis

7,086.244 km

Eccentricity

0.02021

Inclination

66.6865°

RAAN

209.1265°

Arg. of periapsis

287.439°

True anomaly

72.67237°

Mean anomaly

70.4716°

Eccentric anomaly

71.57019°

Mean motion

3.63847 °/min

Orbital period

98.94 mins

BSTAR

0.00010023

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

THOR ABLESTAR DEB, 840 (Decayed)

THOR ABLESTAR DEB, 841 (Decayed)

TRANSIT 2A, 45

THOR ABLESTAR R/B, 47

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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.
10 mins	2026-06-24 13:34:09.969Z	323.762° NNW	2026-06-24 13:40:09.969Z	223.391° SW	40.43°	2026-06-24 13:44:09.969Z	169.19° S
8 mins	2026-06-25 04:01:09.969Z	214.759° SW	2026-06-25 04:04:09.969Z	278.425° WNW	44.474°	2026-06-25 04:09:09.969Z	26.616° NE
4 mins	2026-06-25 05:45:09.969Z	298.464° NW	2026-06-25 05:47:09.969Z	322.693° NNW	14.323°	2026-06-25 05:49:09.969Z	345.73° N
4 mins	2026-06-25 11:00:09.969Z	21.274° NNE	2026-06-25 11:02:09.969Z	43.448° NE	12.921°	2026-06-25 11:04:09.969Z	64.524° 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: 2026-06-24T04:46:02.664Z)

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