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RADIATION SAT (5E 1), 671

Orbit data source: Space-Track

RADIATION SAT (5E 1), 671 is a payload satellite owned by USN BuWeps (US) in LEO that was launched on Sat, 28 Sep 1963 UTC via a THOR ABLESTAR launch vehicle from the Air Force Western Test Range (AFWTR). 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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Identifier

671, 1963-038C

Orbit

LEO

Country

Related business

United States Navy (US)

Manufacturer

APL

Mission

Spacecraft

Bus & Motor

TRANSIT 5, Unknown motor

Mass

59 kg wet, 59 kg dry

Launch date (UTC)

1963-09-28 (63 years ago)

Launch vehicle

THOR ABLESTAR

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

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Last TLE update: 16 hours ago

TLE from 16 hours ago

0 RADIATION SAT (5E 1)
1 00671U 63038C   26140.77051672  .00000052  00000-0  71960-4 0  9996
2 00671  89.9636 333.1241 0042084  70.0916 290.4759 13.45221581 71360

Epoch: 2026-05-20T18:29Z

TLE epoch observation values (Epoch: 2026-05-20T18:29:32.644Z)

Latitude

-0.00003°

Longitude

177.31278°

Altitude

1,081.958 km

Speed

7.316 km/s

True Right ascension

22h 12m 29s

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

19:54:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,118.364 km

Perigee altitude

1,055.532 km

Semi-major axis

7,465.085 km

Eccentricity

0.00421

Inclination

89.9636°

RAAN

333.1241°

Arg. of periapsis

70.0916°

True anomaly

290.02329°

Mean anomaly

290.4759°

Eccentric anomaly

290.24968°

Mean motion

3.36505 °/min

Orbital period

106.98 mins

BSTAR

0.00007196

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Other satellites on launch #38 in the year 1963 (1963-09-28 UTC)

TRANSIT 5B-1 DEB, 4587 (Decayed)

TRANSIT 5B-1 DEB, 3166

TRANSIT 5B-1, 670

TRANSIT 5B-1 DEB, 38522 (Decayed)

THOR ABLESTAR DEB, 672

TRANSIT 5B-1 DEB, 1528 (Decayed)

THOR ABLESTAR R/B, 669

THOR ABLESTAR DEB, 745

TRANSIT 5B-1 DEB, 12943 (Decayed)

THOR ABLESTAR DEB, 38521

TRANSIT 5B-1 DEB, 2097

TRANSIT 5B-1 DEB, 27479 (Decayed)

TRANSIT 5B-1 DEB, 20470 (Decayed)

TRANSIT 5B-1 DEB, 19062 (Decayed)

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RADIATION SAT (5E 1) 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.
11 mins	2026-05-21 12:26:48.714Z	147.184° SSE	2026-05-21 12:32:48.714Z	77.104° E	33.879°	2026-05-21 12:37:48.714Z	15.509° NNE
9 mins	2026-05-21 14:15:48.714Z	229.141° WSW	2026-05-21 14:19:48.714Z	279.859° WNW	26.411°	2026-05-21 14:24:48.714Z	334.108° NNW
6 mins	2026-05-21 23:41:48.714Z	51.85° ENE	2026-05-21 23:43:48.714Z	73.05° E	17.824°	2026-05-21 23:47:48.714Z	114.244° SE
11 mins	2026-05-22 01:26:48.714Z	353.888° N	2026-05-22 01:31:48.714Z	268.942° W	42.715°	2026-05-22 01:37:48.714Z	195.793° SSW

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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 RADIATION SAT (5E 1), 671 on other resources

View RADIATION SAT (5E 1), 671 on NASA - NSSDCA Website

View RADIATION SAT (5E 1), 671 on Heavens-Above

View RADIATION SAT (5E 1), 671 on Keep Track

View RADIATION SAT (5E 1), 671 on Celestrak

View RADIATION SAT (5E 1), 671 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

RADIATION SAT (5E 1), 671

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2026-05-20T18:29:32.644Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #38 in the year 1963 (1963-09-28 UTC)

RADIATION SAT (5E 1) Visibility forecast

Co-orbital & Co-planar RSOs

Check out RADIATION SAT (5E 1), 671 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 16 hours ago