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COSMOS 2508, 40921

Orbit data source: Space-Track

COSMOS 2508, 40921 is a payload satellite owned by VVKO VKS (CIS) in LEO that was launched on Wed, 23 Sep 2015 UTC via an ROKOT 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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<iframe src="https://www.satcat.com/sats-embedded/40921?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/40921?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

40921, 2015-050B

Orbit

LEO

Last TLE update

4 hours ago

Origin

Russian Space Forces (CIS)

Manufacturer

Resehetnev ISS

Mission

Operational Defense Communications

Bus & Motor

STRELA-3M, Unknown motor

Mass

280 kg wet, 280 kg dry

Launch date (UTC)

2015-09-23 (10 years ago)

Launch vehicle

ROKOT

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 1 Ant, 7 m

Radar Cross Section

1.583 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 4 hours ago

0 COSMOS 2508
1 40921U 15050B   25129.17843178  .00000063  00000-0  38361-3 0  9998
2 40921  82.4870 329.8410 0013745 181.9682 178.1346 12.42895720436686

Epoch: 2025-05-09T04:16Z

Definitive object data (Epoch: 2025-05-09T04:16:56.505Z)

Latitude

-0.00002°

Longitude

38.36726°

Altitude

1,507.868 km

Speed

7.106 km/s

True Right ascension

21h 59m 21s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

24.54963°

Longitude

41.70029°

Altitude

1,507.098 km

Speed

7.109 km/s

Apparent Right ascension

00h 34m 05s

Apparent Declination

-5° 28' 47"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

16:25:51

Azimuth

72.513° E

Elevation

-27.808°

Doppler factor

Orbital elements

Apogee altitude

1,502.521 km

Perigee altitude

1,480.886 km

Semi-major axis

7,869.84 km

Eccentricity

0.0013745

Inclination

82.487°

RAAN

329.841°

Arg. of periapsis

181.9682°

True anomaly

178.13972°

Mean anomaly

178.1346°

Eccentric anomaly

178.13716°

Mean motion

3.10881 °/min

BSTAR

0.00038361

Orbital period

115.8 mins

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Other satellites on launch #50 in the year 2015 (2015-09-23 UTC)

COSMOS 2507, 40920

COSMOS 2509, 40922

BREEZE-KM R/B, 40923

COSMOS 2508 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.
8 mins	2025-05-09 12:09:43.706Z	107.591° ESE	2025-05-09 12:13:43.706Z	79.095° E	15.36°	2025-05-09 12:17:43.706Z	49.544° ENE
16 mins	2025-05-09 14:01:43.706Z	182.843° SSW	2025-05-09 14:09:43.706Z	50.294° ENE	44.858°	2025-05-09 14:17:43.706Z	8.799° NNE
10 mins	2025-05-09 16:02:43.706Z	259.838° W	2025-05-09 16:07:43.706Z	298.846° NW	18.654°	2025-05-09 16:12:43.706Z	336.326° NNW
14 mins	2025-05-10 00:13:43.706Z	10.211° NNE	2025-05-10 00:20:43.706Z	80.021° E	33.402°	2025-05-10 00:27:43.706Z	140.001° SSE
14 mins	2025-05-10 02:10:43.706Z	333.916° NNW	2025-05-10 02:16:43.706Z	278.621° WNW	33.655°	2025-05-10 02:24:43.706Z	207.28° SW

Authenticating...

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Check out COSMOS 2508, 40921 on other resources

View COSMOS 2508, 40921 on NASA - NSSDCA Website

View COSMOS 2508, 40921 on Heavens-Above

View COSMOS 2508, 40921 on Keep Track

View COSMOS 2508, 40921 on Celestrak

View COSMOS 2508, 40921 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.