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OPS 1920, 2481

Orbit data source: Space-Track

OPS 1920, 2481 is a payload satellite owned by USAF SSD (US) in LEO that was launched on Wed, 05 Oct 1966 UTC via an ATLAS SLV-3 AGENA D 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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<iframe src="https://www.satcat.com/sats-embedded/2481?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/2481?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

2481, 1966-089A

Orbit

LEO

Country

Related business

United States Space Force (US)

Manufacturer

LMSC

Mission

Spacecraft

Bus & Motor

MIDAS, Unknown motor

Mass

~2,000 kg wet, ~1,000 kg dry

Launch date (UTC)

1966-10-05 (59 years ago)

Launch vehicle

ATLAS SLV-3 AGENA D

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 OPS 1920
1 02481U 66089A   26072.31951548 -.00000008  00000-0 -51135-2 0  9994
2 02481  89.8451  31.8976 0033254  56.4736 303.9286  8.59255160864431

Epoch: 2026-03-13T07:40Z

TLE epoch observation values (Epoch: 2026-03-13T07:40:06.137Z)

Latitude

0.00006°

Longitude

105.91528°

Altitude

3,674.451 km

Speed

6.303 km/s

True Right ascension

02h 07m 35s

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

00:42:50

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

3,722.176 km

Perigee altitude

3,655.223 km

Semi-major axis

10,066.837 km

Eccentricity

0.00333

Inclination

89.8451°

RAAN

31.8976°

Arg. of periapsis

56.4736°

True anomaly

303.61169°

Mean anomaly

303.9286°

Eccentric anomaly

303.77022°

Mean motion

2.14884 °/min

Orbital period

167.53 mins

BSTAR

-0.0051135

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Other satellites on launch #89 in the year 1966 (1966-10-05 UTC)

SECOR 8 (EGRS 8), 2520

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OPS 1920 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.
37 mins	2026-03-13 21:38:24.740Z	178.621° S	2026-03-13 21:56:24.740Z	255.57° W	44.742°	2026-03-13 22:15:24.740Z	358.043° N
22 mins	2026-03-14 00:37:24.740Z	261.186° W	2026-03-14 00:48:24.740Z	300.537° NW	18.212°	2026-03-14 00:59:24.740Z	339.242° N
28 mins	2026-03-14 06:50:24.740Z	17.313° NNE	2026-03-14 07:04:24.740Z	69.913° E	24.038°	2026-03-14 07:18:24.740Z	120.279° SE
36 mins	2026-03-14 09:36:24.740Z	0.073° NNE	2026-03-14 09:53:24.740Z	286.066° WNW	44.751°	2026-03-14 10:12:24.740Z	192.537° SSW
22 mins	2026-03-14 12:25:24.740Z	343.451° N	2026-03-14 12:35:24.740Z	308.225° NW	19.972°	2026-03-14 12:47:24.740Z	266.358° W
14 mins	2026-03-14 20:03:24.740Z	139.482° SSE	2026-03-14 20:17:24.740Z	87.239° E	37.614°	2026-03-14 20:17:24.740Z	87.239° E

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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 OPS 1920, 2481 on other resources

View OPS 1920, 2481 on NASA - NSSDCA Website

View OPS 1920, 2481 on Heavens-Above

View OPS 1920, 2481 on Keep Track

View OPS 1920, 2481 on Celestrak

View OPS 1920, 2481 on Gunter's Space Page

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

OPS 1920, 2481

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-03-13T07:40:06.137Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #89 in the year 1966 (1966-10-05 UTC)

OPS 1920 Visibility forecast

Co-orbital & Co-planar RSOs

Check out OPS 1920, 2481 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 13 hours ago