COSMOS 1987 (GLONASS), 19749
Orbit data source: Space-Track
COSMOS 1987 (GLONASS), 19749 is a payload satellite owned by UNKS (CIS) in MEO that was launched on Tue, 10 Jan 1989 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.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
19749 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
Omsk Av. Zav.
Mission
Non-operational Defense Navigation
Bus & Motor
URAGAN, Unknown motor
Mass
1,300 kg wet, ~1,200 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 2 Pan, 4.2 m
Radar Cross Section
14.707 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 COSMOS 1987 (GLONASS)
1 19749U 89001A 25258.19664206 .00000035 00000-0 00000-0 0 9992
2 19749 64.7749 81.7016 0004731 230.5848 311.0751 2.13073244285433Epoch: 2025-09-15T04:43Z
TLE epoch observation values (Epoch: 2025-09-15T04:43:09.873Z)
Latitude
-1.47564°
Longitude
-162.8036°
Altitude
19,125.032 km
Speed
3.954 km/s
True Right ascension
17h 29m 34s
True Declination
-1° 28' 23"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
04:06:05
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
19,143.874 km
Perigee altitude
19,119.736 km
Semi-major axis
25,509.942 km
Eccentricity
0.00047
Inclination
64.7749°
RAAN
81.7016°
Arg. of periapsis
230.5848°
True anomaly
311.03422°
Mean anomaly
311.0751°
Eccentric anomaly
311.05466°
Mean motion
0.5327 °/min
Orbital period
675.81 mins
BSTAR
0
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #1 in the year 1989 (1989-01-10 UTC)
Did you know?
You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.COSMOS 1987 (GLONASS) Visibility forecast
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 129 mins | 2025-09-15 11:27:50.197Z | 90.342° ESE | 2025-09-15 11:42:50.197Z | 76.958° E | 37.76° | 2025-09-15 13:36:50.197Z | 30.338° NE |
| 231 mins | 2025-09-15 23:52:50.197Z | 329.273° NNW | 2025-09-16 01:47:50.197Z | 281.86° WNW | 38.182° | 2025-09-16 03:43:50.197Z | 219.8° SW |
| 154 mins | 2025-09-16 08:53:50.197Z | 109.687° ESE | 2025-09-16 10:23:50.197Z | 63.462° ENE | 28.219° | 2025-09-16 11:27:50.197Z | 31.109° NE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
|---|