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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

Last TLE update

1 day ago

Origin

United States Space Force (US)

Manufacturer

LMSC

Mission

Defense Early Warn

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

Cone + Cyl + 2 Pan, 3 m

Radar Cross Section

4.418 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 1 day ago

0 OPS 1920
1 02481U 66089A   25182.01507635 -.00000021  00000-0 -11325-1 0  9997
2 02481  89.8225  33.4454 0032155 312.7304  47.0843  8.59255049842502

Epoch: 2025-07-01T00:21Z

TLE epoch observation values (Epoch: 2025-07-01T00:21:42.596Z)

Latitude

0.00004°

Longitude

108.70131°

Altitude

3,671.074 km

Speed

6.306 km/s

True Right ascension

02h 13m 46s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

53.37358°

Longitude

108.93251°

Altitude

3,705.853 km

Speed

6.29 km/s

Apparent Right ascension

01h 57m 26s

Apparent Declination

20° 10' 17"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

13:36:13

Azimuth

354.262° N

Elevation

-29.709°

Doppler factor

Orbital elements

Apogee altitude

3,721.07 km

Perigee altitude

3,656.331 km

Semi-major axis

10,066.837 km

Eccentricity

0.00322

Inclination

89.8225°

RAAN

33.4454°

Arg. of periapsis

312.7304°

True anomaly

Unknown

Mean anomaly

47.0843°

Eccentric anomaly

Unknown

Mean motion

2.14884 °/min

Orbital period

167.53 mins

BSTAR

-0.011325

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

SECOR 8 (EGRS 8), 2520

OPS 1920 Visibility forecast

Observer location: undefined°, undefined°

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	2025-07-02 02:17:13.532Z	0.818° NNE	2025-07-02 02:36:13.532Z	223.684° SW	44.956°	2025-07-02 02:54:13.532Z	188.502° SSW
24 mins	2025-07-02 05:07:13.532Z	344.482° N	2025-07-02 05:18:13.532Z	305.336° NW	22.08°	2025-07-02 05:31:13.532Z	260.051° W
33 mins	2025-07-02 12:45:13.532Z	135.392° SSE	2025-07-02 13:01:13.532Z	70.57° E	36.378°	2025-07-02 13:18:13.532Z	5.052° NNE
35 mins	2025-07-02 15:30:13.532Z	204.132° SW	2025-07-02 15:47:13.532Z	276.388° WNW	38.625°	2025-07-02 16:05:13.532Z	353.084° N
35 mins	2025-07-03 00:39:13.532Z	8.593° NNE	2025-07-03 00:56:13.532Z	77.344° E	36.192°	2025-07-03 01:14:13.532Z	150.565° SSE

Authenticating...

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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.