OBJECT B, 65545

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, 65545 is a satellite owned by CAST (CN) in LEO that was launched on Sat, 06 Sep 2025 UTC via a CHANG ZHENG 6A 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/65545?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/65545?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

65545, 2025-199B

Orbit

LEO

Country

CN / PRC

Related business

China Aerospace Science and Technology Corporation (CASC) (CN)

Manufacturer

DFH

Mission

Operational Defense Sigint

Bus & Motor

YG40, Unknown motor

Mass

~500 kg wet, ~500 kg dry

Launch date (UTC)

2025-09-06 (9 months ago)

Launch vehicle

CHANG ZHENG 6A

Launch site

Taiyaun Space Center, China (TSC)

Object type

Unknown

Shape & HBR

Box + 2 Pan, 1.1 m

Radar Cross Section

5.141 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 OBJECT B
1 65545U 25199B   26171.36954618  .00000096  00000-0  41695-4 0  9994
2 65545  85.9908  42.6639 0002436  89.9957 270.1505 14.12449979 40484

Epoch: 2026-06-20T08:52Z

TLE epoch observation values (Epoch: 2026-06-20T08:52:08.789Z)

Latitude

-0.00008°

Longitude

1.04212°

Altitude

854.01 km

Speed

7.426 km/s

True Right ascension

02h 50m 39s

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

07:19:35

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

849.764 km

Perigee altitude

846.244 km

Semi-major axis

7,226.141 km

Eccentricity

0.00024

Inclination

85.9908°

RAAN

42.6639°

Arg. of periapsis

89.9957°

True anomaly

270.12259°

Mean anomaly

270.1505°

Eccentric anomaly

270.13654°

Mean motion

3.53332 °/min

Orbital period

101.89 mins

BSTAR

0.000041695

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #199 in the year 2025 (2025-09-06 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 B 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.
7 mins	2026-06-21 02:27:50.164Z	31.229° NE	2026-06-21 02:31:50.164Z	83.664° E	21.03°	2026-06-21 02:34:50.164Z	121.098° SE
9 mins	2026-06-21 04:09:50.164Z	338.134° N	2026-06-21 04:13:50.164Z	274.979° WNW	34.462°	2026-06-21 04:18:50.164Z	204.649° SW
9 mins	2026-06-21 15:35:50.164Z	160.104° S	2026-06-21 15:39:50.164Z	81.812° E	39.596°	2026-06-21 15:44:50.164Z	12.588° NNE
6 mins	2026-06-21 17:19:50.164Z	254.002° W	2026-06-21 17:22:50.164Z	291.624° WNW	16.952°	2026-06-21 17:25:50.164Z	325.463° NNW

Items per page:

1–4 of 4 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 B, 65545 on other resources

View OBJECT B, 65545 on Heavens-Above

View OBJECT B, 65545 on Keep Track

View OBJECT B, 65545 on Celestrak

View OBJECT B, 65545 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 B, 65545

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-06-20T08:52:08.789Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #199 in the year 2025 (2025-09-06 UTC)

OBJECT B Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT B, 65545 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago