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TRANSIT 4A, 116

Orbit data source: Space-Track

TRANSIT 4A, 116 is a payload satellite owned by USN BuWeps (US) in LEO that was launched on Thu, 29 Jun 1961 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/116?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

116, 1961-015A

Orbit

LEO

Country

Related business

United States Navy (US)

Manufacturer

APL

Mission

Spacecraft

Bus & Motor

TRANSIT 4, Unknown motor

Mass

78 kg wet, 78 kg dry

Launch date (UTC)

1961-06-29 (65 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

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 TRANSIT 4A
1 00116U 61015A   26162.79713005  .00000005  00000-0  62077-4 0  9991
2 00116  66.8099 264.0187 0082252 276.2445  82.9270 13.92331223295952

Epoch: 2026-06-11T19:07Z

TLE epoch observation values (Epoch: 2026-06-11T19:07:52.036Z)

Latitude

-0.00001°

Longitude

76.9161°

Altitude

915.645 km

Speed

7.398 km/s

True Right ascension

17h 36m 04s

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

19:00:53

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

978.883 km

Perigee altitude

858.844 km

Semi-major axis

7,297.001 km

Eccentricity

0.00823

Inclination

66.8099°

RAAN

264.0187°

Arg. of periapsis

276.2445°

True anomaly

83.86351°

Mean anomaly

82.927°

Eccentric anomaly

83.39514°

Mean motion

3.48198 °/min

Orbital period

103.39 mins

BSTAR

0.000062077

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Other satellites on launch #15 in the year 1961 (1961-06-29 UTC)

THOR ABLESTAR DEB, 358 (Decayed)

THOR ABLESTAR DEB, 151 (Decayed)

THOR ABLESTAR DEB, 412 (Decayed)

THOR ABLESTAR DEB, 300 (Decayed)

THOR ABLESTAR DEB, 13941 (Decayed)

THOR ABLESTAR DEB, 48818 (Decayed)

THOR ABLESTAR DEB, 121

THOR ABLESTAR DEB, 123

THOR ABLESTAR DEB, 127

THOR ABLESTAR DEB, 128

THOR ABLESTAR DEB, 130

THOR ABLESTAR DEB, 147

THOR ABLESTAR DEB, 172

THOR ABLESTAR DEB, 178

THOR ABLESTAR DEB, 318 (Decayed)

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TRANSIT 4A 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	2026-06-13 09:12:39.760Z	244.067° WSW	2026-06-13 09:17:39.760Z	299.63° NW	30.199°	2026-06-13 09:23:39.760Z	13.634° NNE
10 mins	2026-06-13 16:30:39.760Z	350.061° N	2026-06-13 16:34:39.760Z	41.79° NE	33.071°	2026-06-13 16:40:39.760Z	121.239° SE
9 mins	2026-06-13 18:17:39.760Z	303.128° NW	2026-06-13 18:21:39.760Z	245.005° WSW	29.664°	2026-06-13 18:26:39.760Z	188.997° SSW
10 mins	2026-06-14 07:35:39.760Z	188.905° SSW	2026-06-14 07:40:39.760Z	99.515° ESE	40.751°	2026-06-14 07:45:39.760Z	37.676° NE

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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 TRANSIT 4A, 116 on other resources

View TRANSIT 4A, 116 on NASA - NSSDCA Website

View TRANSIT 4A, 116 on Heavens-Above

View TRANSIT 4A, 116 on Keep Track

View TRANSIT 4A, 116 on Celestrak

View TRANSIT 4A, 116 on Gunter's Space Page

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

TRANSIT 4A, 116

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-11T19:07:52.036Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #15 in the year 1961 (1961-06-29 UTC)

TRANSIT 4A Visibility forecast

Co-orbital & Co-planar RSOs

Check out TRANSIT 4A, 116 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago