OBJECT J, 63990

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 J, 63990 is a Chinese satellite in SSO that was launched on Wed, 14 May 2025 UTC via a CHANG ZHENG 2D launch vehicle from the Jiuquan Satellite Launch Center, China (JSC). 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/63990?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/63990?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

63990, 2025-100J

Orbit

SSO

Country

CN / PRC

Related business

None

Manufacturer

Unknown

Mission

Operational Commercial Technology

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

2025-05-14 (1 year ago)

Launch vehicle

CHANG ZHENG 2D

Launch site

Jiuquan Satellite Launch Center, China (JSC)

Object type

Unknown

Shape & HBR

Box + 2 Pan, 1.1 m

Radar Cross Section

0.135 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 OBJECT J
1 63990U 25100J   26130.16469292  .00016625  00000-0  57432-3 0  9990
2 63990  97.3628 206.1662 0010424  74.2680 285.9710 15.29955505 54990

Epoch: 2026-05-10T03:57Z

TLE epoch observation values (Epoch: 2026-05-10T03:57:09.468Z)

Latitude

0.00002°

Longitude

-81.09495°

Altitude

477.091 km

Speed

7.628 km/s

True Right ascension

13h 44m 39s

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

19:53:01

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

480.037 km

Perigee altitude

465.754 km

Semi-major axis

6,851.033 km

Eccentricity

0.00104

Inclination

97.3628°

RAAN

206.1662°

Arg. of periapsis

74.268°

True anomaly

285.85612°

Mean anomaly

285.971°

Eccentric anomaly

285.91356°

Mean motion

3.82745 °/min

Orbital period

94.06 mins

BSTAR

0.00057432

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #100 in the year 2025 (2025-05-14 UTC)

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

OBJECT J Visibility forecast

Loading observer location...
Set Observer location

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	2026-05-10 17:05:20.776Z	54.215° ENE	2026-05-10 17:07:20.776Z	92.559° ESE	17.298°	2026-05-10 17:09:20.776Z	132.33° SE
4 mins	2026-05-10 18:39:20.776Z	321.728° NNW	2026-05-10 18:40:20.776Z	297.75° NW	21.301°	2026-05-10 18:43:20.776Z	236.611° WSW
5 mins	2026-05-11 05:12:20.776Z	175.979° S	2026-05-11 05:14:20.776Z	234.446° WSW	43.64°	2026-05-11 05:17:20.776Z	343.267° N

Items per page:

1–3 of 3 items

of 1 page

Co-orbital & Co-planar RSOs

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

Please sign-in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

Check out OBJECT J, 63990 on other resources

View OBJECT J, 63990 on Heavens-Above

View OBJECT J, 63990 on Keep Track

View OBJECT J, 63990 on Celestrak

View OBJECT J, 63990 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 J, 63990

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-05-10T03:57:09.468Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #100 in the year 2025 (2025-05-14 UTC)

OBJECT J Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT J, 63990 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago