Showing default

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.

Loading next visibility...

Iframe embed code

<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

Optional secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

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: 18 hours ago

TLE from 18 hours ago

0 SOLRAD 1 (GREB)
1 00046U 60007B   26264.15034362  .00000478  00000-0  10626-3 0  9994
2 00046  66.6894 326.5783 0199829 222.8415 135.6980 14.54988848470964

Epoch: 2026-09-21T03:36Z

TLE epoch observation values (Epoch: 2026-09-21T03:36:29.688Z)

Latitude

-0.00005°

Longitude

-87.57973°

Altitude

814.254 km

Speed

7.392 km/s

True Right ascension

21h 46m 18s

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

14:51:29

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

849.354 km

Perigee altitude

566.16 km

Semi-major axis

7,085.894 km

Eccentricity

0.01998

Inclination

66.6894°

RAAN

326.5783°

Arg. of periapsis

222.8415°

True anomaly

137.26903°

Mean anomaly

135.698°

Eccentric anomaly

136.48632°

Mean motion

3.63874 °/min

Orbital period

98.94 mins

BSTAR

0.00010626

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

THOR ABLESTAR DEB, 840 (Decayed)

THOR ABLESTAR DEB, 841 (Decayed)

THOR ABLESTAR R/B, 47

TRANSIT 2A, 45

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

SOLRAD 1 (GREB) Visibility forecast

Loading observer location...
Set Observer location

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	2026-09-22 04:28:49.883Z	143.66° SSE	2026-09-22 04:31:49.883Z	109.552° ESE	18.92°	2026-09-22 04:35:49.883Z	63.938° ENE
10 mins	2026-09-22 06:08:49.883Z	221.862° SW	2026-09-22 06:13:49.883Z	329.65° NNW	62.267°	2026-09-22 06:18:49.883Z	23.308° NE
8 mins	2026-09-22 14:49:49.883Z	335.39° NNW	2026-09-22 14:52:49.883Z	4.628° NNE	69.155°	2026-09-22 14:57:49.883Z	146.873° SSE

Items per page:

1–3 of 3 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign in to view Co-orbital & Co-planar RSOs.

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

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 18 hours ago

TLE from 18 hours ago

TLE epoch observation values (Epoch: 2026-09-21T03:36:29.688Z)

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: 18 hours ago