OBJECT R, 64891

Orbit data source: Space-Track

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Recently launched and/or uncataloged RSOs may have evolving metadata. Metadata may include the following, but is not limited to: Owner, Manufacturer, 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 (1 year ago)

Launch vehicle

SOYUZ-2-1B

Launch site

Vostochny Cosmodrome (VOSTO)

Object type

Unknown

Shape & HBR

Box, 0.2 m

Radar Cross Section

0.035 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 9 hours ago

TLE from 9 hours ago

0 OBJECT R
1 64891U 25155R   26302.95667705  .00010079  00000-0  28291-3 0  9996
2 64891  97.4729 273.9692 0008069  70.2719 289.9395 15.36725462101496

Epoch: 2026-10-29T22:57Z

TLE epoch observation values (Epoch: 2026-10-29T22:57:36.897Z)

Latitude

0.00003°

Longitude

-108.71821°

Altitude

457.034 km

Speed

7.639 km/s

True Right ascension

18h 15m 52s

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

03:42:50

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

458.258 km

Perigee altitude

447.235 km

Semi-major axis

6,830.884 km

Eccentricity

0.00081

Inclination

97.4729°

RAAN

273.9692°

Arg. of periapsis

70.2719°

True anomaly

289.85255°

Mean anomaly

289.9395°

Eccentric anomaly

289.89603°

Mean motion

3.84439 °/min

Orbital period

93.64 mins

BSTAR

0.00028291

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

OBJECT Q, 64890

IONOSFERA-M 03, 64876

OBJECT N, 64888

OBJECT P, 64889

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	2026-10-30 10:28:40.330Z	49.844° ENE	2026-10-30 10:30:40.330Z	98.296° ESE	25.335°	2026-10-30 10:32:40.330Z	144.956° SSE
5 mins	2026-10-30 22:32:40.330Z	194.458° SSW	2026-10-30 22:34:40.330Z	280.295° WNW	48.873°	2026-10-30 22:37:40.330Z	337.285° NNW

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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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OBJECT R, 64891

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-10-29T22:57:36.897Z)

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: 9 hours ago