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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). Payloads include a variety of satellites, spacecraft, and rockets 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	2481, 1966-089A
Orbit	LEO
Last TLE update	20 hours ago
Origin	USAF SSD (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 (58 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 20 hours ago

0 OPS 1920
1  2481U 66089A   25081.89593089  .00000025  00000-0  11267-1 0  9996
2  2481  89.8231  34.0749 0033280  51.7072 308.6765  8.59254813834154

Epoch: 2025-03-22T21:30Z

Definitive object data (Epoch: 2025-03-22T21:30:08.428Z)

Latitude	-0.00005°
Longitude	-109.09465°
Altitude	3,672.193 km
Speed	6.305 km/s
True Right ascension	02h 16m 17s
True Declination	0° 00' 00"
Sunlit	Object was in daylight at TLE epoch

Visualization TLE readout

Latitude	66.26044°
Longitude	-108.69919°
Altitude	3,669.973 km
Speed	6.314 km/s
Apparent Right ascension	07h 10m 17s
Apparent Declination	50° 44' 27"
Sunlit	Object is in daylight

Visualization observer readout

Local Sidereal Time	22:39:35
Azimuth	30.747° NE
Elevation	11.549°
Doppler factor	1

Orbital elements

Apogee altitude	3,722.205 km
Perigee altitude	3,655.2 km
Semi-major axis	10,066.839 km
Eccentricity	0.003328
Inclination	89.8231°
RAAN	34.0749°
Arg. of periapsis	51.7072°
True anomaly	308.378°
Mean anomaly	308.6765°
Eccentric anomaly	308.52733°
Mean motion	2.14884 °/min
BSTAR	0.011267
Orbital period	167.53 mins

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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.
34 mins	2025-03-23 19:54:14.130Z	147.796° SSE	2025-03-23 20:10:14.130Z	79.55° E	40.794°	2025-03-23 20:28:14.130Z	3.101° NNE
33 mins	2025-03-23 22:42:14.130Z	218.418° SW	2025-03-23 22:58:14.130Z	284.119° WNW	33.256°	2025-03-23 23:15:14.130Z	351.1° N
37 mins	2025-03-24 07:48:14.130Z	5.181° NNE	2025-03-24 08:06:14.130Z	79.986° E	40.734°	2025-03-24 08:25:14.130Z	163.358° S
31 mins	2025-03-24 10:37:14.130Z	351.663° N	2025-03-24 10:52:14.130Z	291.879° WNW	33.833°	2025-03-24 11:08:14.130Z	230.195° WSW

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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.