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COSMOS 2115, 21029

Orbit data source: Space-Track

COSMOS 2115, 21029 is a payload satellite owned by UNKS (CIS) in LEO that was launched on Sat, 22 Dec 1990 UTC via a TSIKLON-3 launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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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Identifier
21029, 1990-114B
Orbit
LEO
Last TLE update
16 hours ago
Origin
Manufacturer
NPO PM
Mission
Defense Communications
Bus & Motor
STRELA-3, Unknown motor
Mass
225 kg wet, 225 kg dry
Launch date (UTC)
1990-12-22 (35 years ago)
Launch vehicle
TSIKLON-3
Launch site
Plesetsk Missile And Space Complex (PKMTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Cyl, 1.6 m
Radar Cross Section
1.257 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 16 hours ago
0 COSMOS 2115
1 21029U 90114B   25191.72888120  .00000040  00000-0  16405-3 0  9996
2 21029  82.5669  70.4406 0002433 261.3131 163.0205 12.63521844593282
Epoch: 2025-07-10T17:29Z
TLE epoch observation values (Epoch: 2025-07-10T17:29:35.335Z)
Latitude
63.44051°
Longitude
-105.79506°
Altitude
1,421.132 km
Speed
7.155 km/s
True Right ascension
05h 41m 58s
True Declination
63° 18' 52"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
-15.75501°
Longitude
60.8272°
Altitude
1,413.726 km
Speed
7.153 km/s
Apparent Right ascension
14h 17m 56s
Apparent Declination
-38° 48' 21"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
21:41:06
Azimuth
247.406° WSW
Elevation
-37.899°
Doppler factor
1
Orbital elements
Apogee altitude
1,407.655 km
Perigee altitude
1,403.867 km
Semi-major axis
7,783.898 km
Eccentricity
0.00024
Inclination
82.5669°
RAAN
70.4406°
Arg. of periapsis
261.3131°
True anomaly
Unknown
Mean anomaly
163.0205°
Eccentric anomaly
Unknown
Mean motion
3.16044 °/min
Orbital period
113.91 mins
BSTAR
0.00016405
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COSMOS 2115 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.
15 mins2025-07-11 16:02:23.884Z164.975° S2025-07-11 16:10:23.884Z83.717° E39.589°2025-07-11 16:17:23.884Z17.475° NNE
13 mins2025-07-11 17:59:23.884Z236.11° WSW2025-07-11 18:05:23.884Z289.742° WNW26.642°2025-07-11 18:12:23.884Z348.334° N
10 mins2025-07-12 02:05:23.884Z25.515° NE2025-07-12 02:10:23.884Z67.764° E20.461°2025-07-12 02:15:23.884Z108.675° ESE
14 mins2025-07-12 03:59:23.884Z347.891° N2025-07-12 04:06:23.884Z238.582° WSW43.887°2025-07-12 04:13:23.884Z182.976° SSW
4 mins2025-07-12 05:57:23.884Z299.26° NW2025-07-12 05:59:23.884Z284.371° WNW12.263°2025-07-12 06:01:23.884Z269.53° W
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