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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

OCT CYL + 4 PAN, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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Last TLE update: 8 hours ago

TLE from 8 hours ago

0 RADIATION SAT (5E 1)
1 00671U 63038C   26271.60636147  .00000069  00000-0  10001-3 0  9995
2 00671  89.9655 332.6692 0041736  56.0117 304.4986 13.45235084 88959

Epoch: 2026-09-28T14:33Z

TLE epoch observation values (Epoch: 2026-09-28T14:33:09.631Z)

Latitude

0.00004°

Longitude

106.99576°

Altitude

1,075.22 km

Speed

7.323 km/s

True Right ascension

22h 10m 40s

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

16:19:09

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,118.054 km

Perigee altitude

1,055.742 km

Semi-major axis

7,465.035 km

Eccentricity

0.00417

Inclination

89.9655°

RAAN

332.6692°

Arg. of periapsis

56.0117°

True anomaly

304.10328°

Mean anomaly

304.4986°

Eccentric anomaly

304.30106°

Mean motion

3.36508 °/min

Orbital period

106.98 mins

BSTAR

0.00010001

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

TRANSIT 5B-1 DEB, 2097

THOR ABLESTAR DEB, 38521

TRANSIT 5B-1 DEB, 12943 (Decayed)

THOR ABLESTAR DEB, 745

TRANSIT 5B-1, 670

THOR ABLESTAR R/B, 669

TRANSIT 5B-1 DEB, 3166

TRANSIT 5B-1 DEB, 1528 (Decayed)

TRANSIT 5B-1 DEB, 4587 (Decayed)

TRANSIT 5B-1 DEB, 19062 (Decayed)

THOR ABLESTAR DEB, 672

TRANSIT 5B-1 DEB, 20470 (Decayed)

TRANSIT 5B-1 DEB, 27479 (Decayed)

TRANSIT 5B-1 DEB, 7259 (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.
8 mins	2026-09-29 03:11:44.500Z	111.994° ESE	2026-09-29 03:15:44.500Z	69.851° E	20.659°	2026-09-29 03:19:44.500Z	30.327° NE
11 mins	2026-09-29 04:56:44.500Z	193.557° SSW	2026-09-29 05:01:44.500Z	270.991° WNW	61.874°	2026-09-29 05:07:44.500Z	350.031° N
12 mins	2026-09-29 16:08:44.500Z	11.962° NNE	2026-09-29 16:13:44.500Z	73.905° E	60.639°	2026-09-29 16:20:44.500Z	169.688° S
8 mins	2026-09-29 17:56:44.500Z	324.946° NNW	2026-09-29 18:00:44.500Z	282.18° WNW	21.466°	2026-09-29 18:04:44.500Z	243.319° WSW

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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: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-09-28T14:33:09.631Z)

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: 8 hours ago