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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

4 hours 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 4 hours ago

0 OPS 1920
1  2481U 66089A   25186.55536605 -.00000003  00000-0 -22047-2 0  9993
2  2481  89.8215  33.4156 0032101 308.0915  51.7043  8.59254890843134

Epoch: 2025-07-05T13:19Z

TLE epoch observation values (Epoch: 2025-07-05T13:19:43.626Z)

Latitude

-0.00002°

Longitude

-90.3079°

Altitude

3,673.099 km

Speed

6.304 km/s

True Right ascension

02h 13m 39s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

37.75512°

Longitude

89.55338°

Altitude

3,726.982 km

Speed

6.274 km/s

Apparent Right ascension

15h 18m 56s

Apparent Declination

9° 53' 39"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

05:09:06

Azimuth

33.346° NE

Elevation

-34.034°

Doppler factor

Orbital elements

Apogee altitude

3,721.017 km

Perigee altitude

3,656.386 km

Semi-major axis

10,066.839 km

Eccentricity

0.00321

Inclination

89.8215°

RAAN

33.4156°

Arg. of periapsis

308.0915°

True anomaly

Unknown

Mean anomaly

51.7043°

Eccentric anomaly

Unknown

Mean motion

2.14884 °/min

Orbital period

167.53 mins

BSTAR

-0.0022047

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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.
17 mins	2025-07-05 22:33:46.229Z	24.826° NE	2025-07-05 22:42:46.229Z	54.704° ENE	13.658°	2025-07-05 22:50:46.229Z	81.364° E
37 mins	2025-07-06 01:17:46.229Z	4.577° NNE	2025-07-06 01:35:46.229Z	88.51° E	43.093°	2025-07-06 01:54:46.229Z	171.575° S
30 mins	2025-07-06 04:05:46.229Z	350.596° N	2025-07-06 04:20:46.229Z	293.621° NW	30.245°	2025-07-06 04:35:46.229Z	238.87° WSW
29 mins	2025-07-06 11:48:46.229Z	114.987° SE	2025-07-06 12:02:46.229Z	61.981° ENE	28.498°	2025-07-06 12:17:46.229Z	8.164° NNE
36 mins	2025-07-06 14:29:46.229Z	186.166° SSW	2025-07-06 14:46:46.229Z	267.556° W	43.821°	2025-07-06 15:05:46.229Z	356.905° N

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.