DECAYED

OBJECT B, 49004 (Decayed)

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 B, 49004 was a satellite owned by Changguang WJ (CN) in LEO that was launched on Sat, 03 Jul 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. This object's orbit decayed before it could be identified.

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<iframe src="https://www.satcat.com/sats-embedded/49004?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/49004?theme=dark&initialShowStats=false

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Identifier

49004, 2021-061B

Orbit

Decayed

Country

CN / PRC

Related business

Chang Guang Satellite Technology Co., Ltd. (CN)

Manufacturer

Changguang WJ

Mission

Decayed Commercial Imaging

Bus & Motor

JL-1, Unknown motor

Mass

42 kg wet, 42 kg dry

Launch date (UTC)

2021-07-03 (5 years ago)

Launch vehicle

CHANG ZHENG 2D

Launch site

Taiyaun Space Center, China (TSC)

Object type

Unknown

Shape & HBR

Box + 2 Pan, 0.8 m

Radar Cross Section

2.000 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 7 months ago

TLE from 7 months ago

0 OBJECT B
1 49004U 21061B   25332.10493538  .07685133  24630-5  84508-3 0  9996
2 49004  97.3092  53.6491 0009096 278.4373  81.5894 16.37221819245517

Epoch: 2025-11-28T02:31Z

TLE epoch observation values (Epoch: 2025-11-28T02:31:06.416Z)

Latitude

-0.00005°

Longitude

-51.3799°

Altitude

175.587 km

Speed

7.801 km/s

True Right ascension

03h 34m 35s

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

21:26:23

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

175.967 km

Perigee altitude

164.054 km

Semi-major axis

6,548.147 km

Eccentricity

0.00091

Inclination

97.3092°

RAAN

53.6491°

Arg. of periapsis

278.4373°

True anomaly

81.69253°

Mean anomaly

81.5894°

Eccentric anomaly

81.64096°

Mean motion

4.09605 °/min

Orbital period

87.89 mins

BSTAR

0.00084508

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Other satellites on launch #61 in the year 2021 (2021-07-03 UTC)

OBJECT C, 49005 (Decayed)

OBJECT A, 49003

OBJECT E, 49007 (Decayed)

OBJECT D, 49006 (Decayed)

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OBJECT B Visibility

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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.
This satellite is decayed.

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, 49004 (Decayed) on other resources

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View OBJECT B, 49004 (Decayed) on Gunter's Space Page

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OBJECT B, 49004 (Decayed)

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 7 months ago

TLE from 7 months ago

TLE epoch observation values (Epoch: 2025-11-28T02:31:06.416Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #61 in the year 2021 (2021-07-03 UTC)

OBJECT B Visibility

Co-orbital & Co-planar RSOs

Check out OBJECT B, 49004 (Decayed) on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 7 months ago