OBJECT R, 64891

Orbit data source: Space-Track

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Recently launched and/or uncataloged satellites may have evolving metadata. Metadata may include but not limited to: Owner, Maufacturer, Bus, Motor, and Mission.

OBJECT R, 64891 is a satellite in SSO that was launched on Fri, 25 Jul 2025 UTC via a SOYUZ-2-1B launch vehicle from the Vostochny Cosmodrome (VOSTO). 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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<iframe src="https://www.satcat.com/sats-embedded/64891?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/64891?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

64891, 2025-155R

Orbit

SSO

Country

TBD

Related business

Geoscan (RU)

Manufacturer

SPUT/GEOSK

Mission

Operational Commercial Communications

Bus & Motor

CUBESAT 3U, Unknown motor

Mass

3 kg wet, 3 kg dry

Launch date (UTC)

2025-07-25 (9 months ago)

Launch vehicle

SOYUZ-2-1B

Launch site

Vostochny Cosmodrome (VOSTO)

Object type

Unknown

Shape & HBR

Box, 1.1 m

Radar Cross Section

0.035 m², Small (<0.1 m²)

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Last TLE update: 6 hours ago

TLE from 6 hours ago

0 OBJECT R
1 64891U 25155R   26121.19869416  .00021972  00000-0  71238-3 0  9997
2 64891  97.4520  90.2552 0006139  12.7464 347.3931 15.31985726 73628

Epoch: 2026-05-01T04:46Z

TLE epoch observation values (Epoch: 2026-05-01T04:46:07.175Z)

Latitude

-0.00008°

Longitude

159.59093°

Altitude

468.89 km

Speed

7.634 km/s

True Right ascension

06h 01m 01s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

18:12:58

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

471.042 km

Perigee altitude

462.638 km

Semi-major axis

6,844.977 km

Eccentricity

0.00061

Inclination

97.452°

RAAN

90.2552°

Arg. of periapsis

12.7464°

True anomaly

347.37773°

Mean anomaly

347.3931°

Eccentric anomaly

347.38542°

Mean motion

3.83253 °/min

Orbital period

93.93 mins

BSTAR

0.00071238

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Other satellites on launch #155 in the year 2025 (2025-07-25 UTC)

IONOSFERA-M 04, 64877

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OBJECT R 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	2026-05-01 11:35:57.622Z	333.228° NNW	2026-05-01 11:37:57.622Z	293.898° NW	18.901°	2026-05-01 11:39:57.622Z	251.526° W
5 mins	2026-05-01 22:08:57.622Z	183.141° SSW	2026-05-01 22:10:57.622Z	244.412° WSW	41.034°	2026-05-01 22:13:57.622Z	338.99° N

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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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View OBJECT R, 64891 on Gunter's Space Page

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OBJECT R, 64891

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2026-05-01T04:46:07.175Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #155 in the year 2025 (2025-07-25 UTC)

OBJECT R Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT R, 64891 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 6 hours ago