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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

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   26126.93961774  .00000425  00000-0  97267-4 0  9992
2 00046  66.6889 340.7002 0199591 322.6271  36.1092 14.54831326451006

Epoch: 2026-05-06T22:33Z

TLE epoch observation values (Epoch: 2026-05-06T22:33:02.972Z)

Latitude

-0.00004°

Longitude

137.64489°

Altitude

598.743 km

Speed

7.621 km/s

True Right ascension

22h 42m 48s

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

15:00:13

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

849.707 km

Perigee altitude

566.831 km

Semi-major axis

7,086.406 km

Eccentricity

0.01996

Inclination

66.6889°

RAAN

340.7002°

Arg. of periapsis

322.6271°

True anomaly

37.48464°

Mean anomaly

36.1092°

Eccentric anomaly

36.79413°

Mean motion

3.63835 °/min

Orbital period

98.95 mins

BSTAR

0.000097267

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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.
8 mins	2026-05-07 15:10:08.365Z	172.632° S	2026-05-07 15:14:08.365Z	105.772° ESE	29.069°	2026-05-07 15:18:08.365Z	48.014° ENE
6 mins	2026-05-07 16:53:08.365Z	264.035° W	2026-05-07 16:56:08.365Z	320.381° NNW	25.37°	2026-05-07 16:59:08.365Z	3.463° NNE
8 mins	2026-05-07 23:50:08.365Z	3.106° NNE	2026-05-07 23:53:08.365Z	45.405° ENE	25.012°	2026-05-07 23:58:08.365Z	107.052° ESE
9 mins	2026-05-08 01:31:08.365Z	315.821° NNW	2026-05-08 01:35:08.365Z	253.56° W	37.388°	2026-05-08 01:40:08.365Z	175.415° S

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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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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

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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: 2026-05-06T22:33:02.972Z)

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