OBJECT AB, 57191

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 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)

Expand to show TLE details & history
Last TLE update: 20 hours ago

TLE from 20 hours ago

0 OBJECT AB
1 57191U 23091AB  26207.59363591  .00005026  00000-0  23969-3 0  9991
2 57191  97.5029 265.1288 0014932 358.8130   1.3066 15.19456025169938

Epoch: 2026-07-26T14:14Z

TLE epoch observation values (Epoch: 2026-07-26T14:14:50.142Z)

Latitude

-0.00009°

Longitude

107.13055°

Altitude

500.289 km

Speed

7.62 km/s

True Right ascension

17h 40m 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

00:02:06

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

514.731 km

Perigee altitude

494.177 km

Semi-major axis

6,882.591 km

Eccentricity

0.00149

Inclination

97.5029°

RAAN

265.1288°

Arg. of periapsis

358.813°

True anomaly

1.31051°

Mean anomaly

1.3066°

Eccentric anomaly

1.30855°

Mean motion

3.80115 °/min

Orbital period

94.71 mins

BSTAR

0.00023969

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

OBJECT BA, 57326 (Decayed)

OBJECT B, 57167 (Decayed)

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.
6 mins	2026-07-27 16:06:03.725Z	37.905° NE	2026-07-27 16:09:03.725Z	92.439° ESE	24.039°	2026-07-27 16:12:03.725Z	152.267° SSE
5 mins	2026-07-28 04:19:03.725Z	198.929° SSW	2026-07-28 04:21:03.725Z	258.08° W	34.399°	2026-07-28 04:24:03.725Z	330.932° 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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out OBJECT AB, 57191 on other resources

View OBJECT AB, 57191 on Heavens-Above

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: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2026-07-26T14:14:50.142Z)

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: 20 hours ago