OBJECT B, 66311
Orbit data source: Space-Track
You're viewing an Uncataloged Satellite
Recently launched and/or uncataloged satellites may have evolving metadata. Metadata may include but not limited to: Owner, Maufacturer, Bus, Motor, and Mission.
OBJECT B, 66311 is a satellite owned by ISRO (IN) in GEO that was launched on Sun, 02 Nov 2025 UTC launched from the Sirharikota (SRI). 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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Edit Public Description
Identifier
Orbit
Country
IN / INDRelated business
Manufacturer
ISRO SAC/Banga
Mission
Spacecraft
Bus & Motor
I4K, ISRO LAM
Mass
4,400 kg wet, ~2,000 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Unknown
Shape & HBR
Unknown
Radar Cross Section
RCS unknown
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 OBJECT B
1 66311U 25249B 25338.44778118 -.00000242 00000-0 00000+0 0 9998
2 66311 0.1609 272.2248 0003847 195.0092 220.9426 1.00267672 400Epoch: 2025-12-04T10:44Z
TLE epoch observation values (Epoch: 2025-12-04T10:44:48.293Z)
Latitude
0.13656°
Longitude
93.41994°
Altitude
35,799.445 km
Speed
3.074 km/s
True Right ascension
21h 52m 30s
True Declination
0° 08' 11"
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
12:53:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,805.04 km
Perigee altitude
35,772.597 km
Semi-major axis
42,166.955 km
Eccentricity
0.00038
Inclination
0.1609°
RAAN
272.2248°
Arg. of periapsis
195.0092°
True anomaly
220.91372°
Mean anomaly
220.9426°
Eccentric anomaly
220.92816°
Mean motion
0.25066 °/min
Orbital period
1,436.21 mins
BSTAR
0
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Other satellites on launch #249 in the year 2025 (2025-11-02 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 B Visibility
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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. |
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| OBJECT B is likely not visible in the next few days. |
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66311 neighbors
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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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