Showing default

OV1-4, 2121

Orbit data source: Space-Track

OV1-4, 2121 is a payload satellite owned by USAF OAR (US) in LEO that was launched on Wed, 30 Mar 1966 UTC via an ATLAS 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.

Loading next visibility...
Identifier
2121, 1966-025A
Orbit
LEO
Last TLE update
1 day ago
Origin
Manufacturer
GD/Convair
Mission
Defense Science
Bus & Motor
OV1, Unknown motor
Mass
87 kg wet, 87 kg dry
Launch date (UTC)
1966-03-30 (59 years ago)
Launch vehicle
ATLAS D
Launch site
Air Force Western Test Range (AFWTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Domed Cyl, 1.4 m
Radar Cross Section
0.946 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 1 day ago
0 OV1-4
1 02121U 66025A   25182.10817723  .00000273  00000-0  23091-5 0  9994
2 02121 144.5066  38.9456 0083032  19.1178 341.2603 13.87264374  2367
Epoch: 2025-07-01T02:35Z
TLE epoch observation values (Epoch: 2025-07-01T02:35:46.512Z)
Latitude
-0.00005°
Longitude
80.59351°
Altitude
879.791 km
Speed
7.443 km/s
True Right ascension
02h 35m 46s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-35.40066°
Longitude
168.77847°
Altitude
969.115 km
Speed
7.357 km/s
Apparent Right ascension
07h 09m 32s
Apparent Declination
-39° 25' 37"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
17:31:51
Azimuth
263.603° W
Elevation
-71.256°
Doppler factor
1
Orbital elements
Apogee altitude
1,001.989 km
Perigee altitude
880.441 km
Semi-major axis
7,319.352 km
Eccentricity
0.0083
Inclination
144.5066°
RAAN
38.9456°
Arg. of periapsis
19.1178°
True anomaly
Unknown
Mean anomaly
341.2603°
Eccentric anomaly
Unknown
Mean motion
3.46605 °/min
Orbital period
103.86 mins
BSTAR
0.0000023091
Loading maneuver chart data...
Loading SW <> Apogee altitude chart data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...

OV1-4 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.
9 mins2025-07-02 06:43:13.778Z97.876° ESE2025-07-02 06:48:13.778Z166.562° S29.211°2025-07-02 06:52:13.778Z219.782° SW
9 mins2025-07-02 08:22:13.778Z100.168° ESE2025-07-02 08:26:13.778Z168.677° S39.05°2025-07-02 08:31:13.778Z248.419° W
8 mins2025-07-02 10:01:13.778Z116.35° SE2025-07-02 10:04:13.778Z168.865° S38.797°2025-07-02 10:09:13.778Z261.357° W
7 mins2025-07-02 11:40:13.778Z149.207° SSE2025-07-02 11:43:13.778Z202.882° SW29.475°2025-07-02 11:47:13.778Z259.571° W
4 mins2025-07-02 13:20:13.778Z191.821° SSW2025-07-02 13:22:13.778Z216.266° SW13.626°2025-07-02 13:24:13.778Z238.959° WSW
4 mins2025-07-03 05:19:13.778Z132.03° SE2025-07-03 05:21:13.778Z154.555° SSE13.079°2025-07-03 05:23:13.778Z175.613° S
|