OBJECT F, 61899
Orbit data source: Space-Track
OBJECT F, 61899 is a Chinese satellite in SSO that was launched on Mon, 11 Nov 2024 UTC via a LIJIAN-1 launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). Unknown objects in Earth's orbit typically refer to objects detected orbiting the Earth but have not yet been identified or cataloged. These objects could be anything from previously untracked satellites, spent rocket stages, debris from satellite collisions, or even natural meteoroids temporarily captured by Earth's gravity.
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61899 intel report (Beta)
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Identifier
Orbit
Country
CN / PRCRelated business
None
Manufacturer
Unknown
Mission
Operational Commercial Imaging
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Launch site
Object type
Unknown
Shape & HBR
Box + 2 Pan, 0.5 m
Radar Cross Section
0.195 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 OBJECT F
1 61899U 24205F 26071.69623640 .00011548 00000-0 58254-3 0 9994
2 61899 97.4172 145.3853 0008662 225.0070 135.0462 15.17255424 73661Epoch: 2026-03-12T16:42Z
TLE epoch observation values (Epoch: 2026-03-12T16:42:34.824Z)
Latitude
-0.00009°
Longitude
84.39779°
Altitude
521.454 km
Speed
7.6 km/s
True Right ascension
09h 41m 32s
True Declination
0° 00' 00"
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
03:42:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
517.077 km
Perigee altitude
505.142 km
Semi-major axis
6,889.247 km
Eccentricity
0.00087
Inclination
97.4172°
RAAN
145.3853°
Arg. of periapsis
225.007°
True anomaly
135.11628°
Mean anomaly
135.0462°
Eccentric anomaly
135.08124°
Mean motion
3.79564 °/min
Orbital period
94.85 mins
BSTAR
0.00058254
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Other satellites on launch #205 in the year 2024 (2024-11-11 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.OBJECT F Visibility forecast
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-03-13 03:56:27.999Z | 108.948° ESE | 2026-03-13 03:58:27.999Z | 75.706° E | 16.739° | 2026-03-13 04:00:27.999Z | 37.38° NE |
| 5 mins | 2026-03-13 05:30:27.999Z | 213.201° SW | 2026-03-13 05:32:27.999Z | 258.077° W | 25.782° | 2026-03-13 05:35:27.999Z | 320.952° NNW |
| 4 mins | 2026-03-13 17:02:27.999Z | 53.972° ENE | 2026-03-13 17:04:27.999Z | 100.752° ESE | 23.181° | 2026-03-13 17:06:27.999Z | 143.042° SSE |
| 4 mins | 2026-03-13 18:36:27.999Z | 324.735° NNW | 2026-03-13 18:38:27.999Z | 284.189° WNW | 18.266° | 2026-03-13 18:40:27.999Z | 248.81° W |
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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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