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COSMOS 249, 3504

Orbit data source: Space-Track

COSMOS 249, 3504 is a payload satellite owned by PKO (CIS) in LEO that was launched on Sun, 20 Oct 1968 UTC via a TSIKLON-2A launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). 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/3504?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/3504?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

3504, 1968-091A

Orbit

LEO

Last TLE update

12 hours ago

Origin

Russian Space Forces (CIS)

Manufacturer

TSKBM/KB1

Mission

Defense Weapon

Bus & Motor

IS, Unknown motor

Mass

1,400 kg wet, ~1,400 kg dry

Launch date (UTC)

1968-10-20 (57 years ago)

Launch vehicle

TSIKLON-2A

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 2.0 m

Radar Cross Section

5.596 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 12 hours ago

0 COSMOS 249
1  3504U 68091A   25198.95223296 -.00000054  00000-0  20557-4 0  9992
2  3504  62.3551  24.3412 0985254 312.6736  39.5197 12.96927436676757

Epoch: 2025-07-17T22:51Z

TLE epoch observation values (Epoch: 2025-07-17T22:51:12.927Z)

Latitude

-0°

Longitude

105.52667°

Altitude

727.998 km

Speed

7.755 km/s

True Right ascension

01h 37m 21s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

24.00696°

Longitude

-89.14134°

Altitude

1,975.118 km

Speed

6.588 km/s

Apparent Right ascension

12h 13m 19s

Apparent Declination

-3° 10' 26"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

23:33:41

Azimuth

343.726° N

Elevation

-52.177°

Doppler factor

Orbital elements

Apogee altitude

2,026.967 km

Perigee altitude

519.28 km

Semi-major axis

7,651.26 km

Eccentricity

0.09853

Inclination

62.3551°

RAAN

24.3412°

Arg. of periapsis

312.6736°

True anomaly

47.42928°

Mean anomaly

39.5197°

Eccentric anomaly

43.39824°

Mean motion

3.24298 °/min

Orbital period

111.01 mins

BSTAR

0.000020557

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Other satellites on launch #91 in the year 1968 (1968-10-20 UTC)

COSMOS 249 DEB, 3608 (Decayed)

COSMOS 249 DEB, 3609

COSMOS 249 DEB, 3677 (Decayed)

COSMOS 249 DEB, 3678 (Decayed)

COSMOS 249 DEB *, 3679

COSMOS 249 DEB *, 3680 (Decayed)

COSMOS 249 DEB *, 3681 (Decayed)

COSMOS 249 DEB, 3682 (Decayed)

COSMOS 249 DEB *, 3683 (Decayed)

COSMOS 249 DEB, 3693 (Decayed)

COSMOS 249 DEB, 3695

COSMOS 249 DEB *, 3697 (Decayed)

COSMOS 249 DEB *, 3699 (Decayed)

COSMOS 249 DEB, 3702 (Decayed)

COSMOS 249 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.
14 mins	2025-07-18 13:46:09.154Z	189.899° SSW	2025-07-18 13:51:09.154Z	129.655° SE	39.369°	2025-07-18 14:00:09.154Z	41.637° NE
14 mins	2025-07-18 15:42:09.154Z	264.105° W	2025-07-18 15:47:09.154Z	323.34° NNW	32.876°	2025-07-18 15:56:09.154Z	29.615° NE
12 mins	2025-07-18 17:41:09.154Z	317.366° NNW	2025-07-18 17:46:09.154Z	354.896° N	19.825°	2025-07-18 17:53:09.154Z	35.114° NE
15 mins	2025-07-18 19:39:09.154Z	337.678° N	2025-07-18 19:45:09.154Z	17.57° NNE	22.783°	2025-07-18 19:54:09.154Z	68.327° E
21 mins	2025-07-18 21:34:09.154Z	331.97° NNW	2025-07-18 21:44:09.154Z	48.398° ENE	38.126°	2025-07-18 21:55:09.154Z	117.214° SE
20 mins	2025-07-18 23:30:09.154Z	316.892° NNW	2025-07-18 23:40:09.154Z	236.3° WSW	41.458°	2025-07-18 23:50:09.154Z	168.078° S
9 mins	2025-07-19 01:29:09.154Z	283.16° WNW	2025-07-19 01:33:09.154Z	261.959° W	14.917°	2025-07-19 01:38:09.154Z	235.193° WSW

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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Check out COSMOS 249, 3504 on other resources

View COSMOS 249, 3504 on NASA - NSSDCA Website

View COSMOS 249, 3504 on Heavens-Above

View COSMOS 249, 3504 on Keep Track

View COSMOS 249, 3504 on Celestrak

View COSMOS 249, 3504 on Gunter's Space Page

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