OBJECT B, 49316

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, 49316 is a Chinese satellite in SSO that was launched on Thu, 14 Oct 2021 UTC via a CHANG ZHENG 2D launch vehicle from the Taiyaun Space Center, China (TSC). 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/49316?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/49316?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

49316, 2021-091B

Orbit

SSO

Country

CN / PRC

Related business

Nanjing University (CN)

Manufacturer

SAST

Mission

Operational Amateur Astronomy

Bus & Motor

CHASE, Unknown motor

Mass

500 kg wet, 500 kg dry

Launch date (UTC)

2021-10-14 (4 years ago)

Launch vehicle

CHANG ZHENG 2D

Launch site

Taiyaun Space Center, China (TSC)

Object type

Unknown

Shape & HBR

Box + 2 Pan, 2.5 m

Radar Cross Section

3.585 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 16 hours ago

TLE from 16 hours ago

0 OBJECT B
1 49316U 21091B   25348.96235477  .00004070  00000-0  19629-3 0  9992
2 49316  97.4446 174.4380 0010133 286.8312  73.1811 15.19223945231035

Epoch: 2025-12-14T23:05Z

TLE epoch observation values (Epoch: 2025-12-14T23:05:47.452Z)

Latitude

0.00001°

Longitude

104.12253°

Altitude

509.26 km

Speed

7.61 km/s

True Right ascension

11h 37m 45s

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

13:25:40

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

512.128 km

Perigee altitude

498.178 km

Semi-major axis

6,883.29 km

Eccentricity

0.00101

Inclination

97.4446°

RAAN

174.438°

Arg. of periapsis

286.8312°

True anomaly

73.29229°

Mean anomaly

73.1811°

Eccentric anomaly

73.23669°

Mean motion

3.80057 °/min

Orbital period

94.72 mins

BSTAR

0.00019629

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Other satellites on launch #91 in the year 2021 (2021-10-14 UTC)

OBJECT K, 49324 (Decayed)

OBJECT G, 49321

OBJECT L, 49325 (Decayed)

OBJECT C, 49317

OBJECT D, 49318

OBJECT E, 49319

OBJECT F, 49320 (Decayed)

OBJECT A, 49315 (Decayed)

OBJECT J, 49323 (Decayed)

OBJECT H, 49322 (Decayed)

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OBJECT B 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	2025-12-16 00:57:05.878Z	29.939° NE	2025-12-16 01:00:05.878Z	86.395° E	31.129°	2025-12-16 01:03:05.878Z	162.182° S
5 mins	2025-12-16 13:10:05.878Z	209.577° SW	2025-12-16 13:12:05.878Z	253.846° W	26.65°	2025-12-16 13:15:05.878Z	321.252° 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 B, 49316 on other resources

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View OBJECT B, 49316 on Keep Track

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View OBJECT B, 49316 on Gunter's Space Page

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OBJECT B, 49316

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2025-12-14T23:05:47.452Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #91 in the year 2021 (2021-10-14 UTC)

OBJECT B Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT B, 49316 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 16 hours ago