OBJECT AB, 57191

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 AB, 57191 is a satellite in SSO that was launched on Tue, 27 Jun 2023 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/57191?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/57191?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

57191, 2023-091AB

Orbit

SSO

Country

TBD

Related business

Peter the Great St.Petersburg Polytechnic University (RU)

Manufacturer

STTs

Mission

Operational Amateur Technology

Bus & Motor

CUBESAT 3U, Unknown motor

Mass

5.07 kg wet, 5.07 kg dry

Launch date (UTC)

2023-06-27 (3 years 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)

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Last TLE update: 6 hours ago

TLE from 6 hours ago

0 OBJECT AB
1 57191U 23091AB  26220.17144749  .00002375  00000-0  11473-3 0  9993
2 57191  97.5013 277.6264 0013832 312.3490  47.6572 15.19557325171848

Epoch: 2026-08-08T04:06Z

TLE epoch observation values (Epoch: 2026-08-08T04:06:53.063Z)

Latitude

-0.00004°

Longitude

-100.78131°

Altitude

503.855 km

Speed

7.616 km/s

True Right ascension

18h 30m 30s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

00:14:23

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

513.668 km

Perigee altitude

494.628 km

Semi-major axis

6,882.285 km

Eccentricity

0.00138

Inclination

97.5013°

RAAN

277.6264°

Arg. of periapsis

312.349°

True anomaly

47.77449°

Mean anomaly

47.6572°

Eccentric anomaly

47.71583°

Mean motion

3.80141 °/min

Orbital period

94.7 mins

BSTAR

0.00011473

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Other satellites on launch #91 in the year 2023 (2023-06-27 UTC)

OBJECT AA, 57190 (Decayed)

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OBJECT AB 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.
5 mins	2026-08-08 17:20:08.343Z	334.965° NNW	2026-08-08 17:22:08.343Z	277.373° WNW	28.454°	2026-08-08 17:25:08.343Z	223.556° SW
5 mins	2026-08-09 03:58:08.343Z	168.585° S	2026-08-09 04:00:08.343Z	340.37° N	43.869°	2026-08-09 04:03:08.343Z	347.411° N

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Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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Check out OBJECT AB, 57191 on other resources

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View OBJECT AB, 57191 on Keep Track

View OBJECT AB, 57191 on Celestrak

View OBJECT AB, 57191 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

OBJECT AB, 57191

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: 2026-08-08T04:06:53.063Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #91 in the year 2023 (2023-06-27 UTC)

OBJECT AB Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT AB, 57191 on other resources

Documentation

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