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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 src="https://www.satcat.com/sats-embedded/46?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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: 1 day ago

TLE from 1 day ago

0 SOLRAD 1 (GREB)
1 00046U 60007B   26140.48254419  .00000210  00000-0  59041-4 0  9999
2 00046  66.6880 303.7767 0200486 312.7069  45.7307 14.54841292452970

Epoch: 2026-05-20T11:34Z

TLE epoch observation values (Epoch: 2026-05-20T11:34:51.818Z)

Latitude

-0°

Longitude

-108.08067°

Altitude

614.3 km

Speed

7.604 km/s

True Right ascension

20h 15m 06s

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

20:14:53

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

850.309 km

Perigee altitude

566.165 km

Semi-major axis

7,086.374 km

Eccentricity

0.02005

Inclination

66.688°

RAAN

303.7767°

Arg. of periapsis

312.7069°

True anomaly

47.40482°

Mean anomaly

45.7307°

Eccentric anomaly

46.56483°

Mean motion

3.63837 °/min

Orbital period

98.95 mins

BSTAR

0.000059041

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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, 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.
9 mins	2026-05-21 12:27:53.846Z	207.665° SW	2026-05-21 12:31:53.846Z	31.066° NE	44.886°	2026-05-21 12:36:53.846Z	29.313° NE
4 mins	2026-05-21 14:12:53.846Z	301.013° NW	2026-05-21 14:13:53.846Z	314.062° NW	14.374°	2026-05-21 14:16:53.846Z	350.485° N
9 mins	2026-05-21 21:07:53.846Z	343.909° N	2026-05-21 21:11:53.846Z	61.6° ENE	40.149°	2026-05-21 21:16:53.846Z	134.904° SE
7 mins	2026-05-21 22:49:53.846Z	293.61° NW	2026-05-21 22:52:53.846Z	256.854° W	20.247°	2026-05-21 22:56:53.846Z	208.897° SW

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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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-05-20T11:34:51.818Z)

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: 1 day ago