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RADUGA 25, 20499

Orbit data source: Space-Track

RADUGA 25, 20499 is a payload satellite owned by UNKS (CIS) in GEO that was launched on Thu, 15 Feb 1990 UTC via a PROTON-K/DM-2 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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https://www.satcat.com/sats-embedded/20499?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20499, 1990-016A

Orbit

GEO

Last TLE update

9 hours ago

Origin

Russian Space Forces (CIS)

Manufacturer

NPO PM

Mission

Non-operational Defense Communications

Bus & Motor

RADUGA, Unknown motor

Mass

1,965 kg wet, ~1,800 kg dry

Launch date (UTC)

1990-02-15 (35 years ago)

Launch vehicle

PROTON-K/DM-2

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 2 Pan, 9.5 m

Radar Cross Section

16.975 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 9 hours ago

0 RADUGA 25
1 20499U 90016A   25191.76433613 -.00000231  00000-0  00000+0 0  9997
2 20499  12.6788 337.0548 0005434 195.4859 359.6695  1.00285674129520

Epoch: 2025-07-10T18:20Z

TLE epoch observation values (Epoch: 2025-07-10T18:20:38.641Z)

Latitude

-3.28665°

Longitude

-32.23452°

Altitude

35,759.922 km

Speed

3.076 km/s

True Right ascension

11h 27m 24s

True Declination

-3° 16' 60"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-7.52192°

Longitude

97.1504°

Altitude

35,797.726 km

Speed

3.074 km/s

Apparent Right ascension

20h 31m 29s

Apparent Declination

-13° 14' 35"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

15:09:04

Azimuth

106.125° ESE

Elevation

-1.441°

Doppler factor

Orbital elements

Apogee altitude

35,806.608 km

Perigee altitude

35,760.786 km

Semi-major axis

42,161.834 km

Eccentricity

0.00054

Inclination

12.6788°

RAAN

337.0548°

Arg. of periapsis

195.4859°

True anomaly

Unknown

Mean anomaly

359.6695°

Eccentric anomaly

Unknown

Mean motion

0.25071 °/min

Orbital period

1,435.95 mins

BSTAR

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20499 neighbors

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Other satellites on launch #16 in the year 1990 (1990-02-15 UTC)

SL-12 R/B(1), 20500 (Decayed)

SL-12 PLAT, 20501 (Decayed)

SL-12 R/B(2), 20502

SL-12 R/B(AUX MOTOR), 20506 (Decayed)

SL-12 R/B(AUX MOTOR), 20507 (Decayed)

RADUGA 25 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.
344 mins	2025-07-11 08:03:26.298Z	94.786° ESE	2025-07-11 10:49:26.298Z	90.938° ESE	12.225°	2025-07-11 13:47:26.298Z	92.508° ESE

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Check out RADUGA 25, 20499 on other resources

View RADUGA 25, 20499 on NASA - NSSDCA Website

View RADUGA 25, 20499 on Heavens-Above

View RADUGA 25, 20499 on Keep Track

View RADUGA 25, 20499 on Celestrak

View RADUGA 25, 20499 on Gunter's Space Page

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