OBJECT K, 49404

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 K, 49404 is a satellite owned by ISAS/JAXA (JP) in SSO that was launched on Tue, 09 Nov 2021 UTC launched from the Kagoshima Space Center University Of Tokyo (KSCUT). 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/49404?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/49404?theme=dark&initialShowStats=false

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Identifier

49404, 2021-102K

Orbit

SSO

Last TLE update

12 hours ago

Origin

JAXA (Japan Aerospace Exploration Agency) (JP / JPN)

Manufacturer

JAXA

Mission

Spacecraft

Bus & Motor

EPBS, Unknown motor

Mass

~185 kg wet, ~185 kg dry

Launch date (UTC)

2021-11-09 (4 years ago)

Launch vehicle

Unknown

Launch site

Kagoshima Space Center University Of Tokyo (KSCUT)

Object type

Unknown

Shape & HBR

Cyl, 0.8 m

Radar Cross Section

2.297 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 12 hours ago

0 OBJECT K
1 49404U 21102K   25202.17623252  .00003180  00000-0  15893-3 0  9997
2 49404  97.3737 246.8150 0018615 297.8030  62.1317 15.18029150203596

Epoch: 2025-07-21T04:13Z

TLE epoch observation values (Epoch: 2025-07-21T04:13:46.489Z)

Latitude

-0.00004°

Longitude

-115.81709°

Altitude

508.908 km

Speed

7.613 km/s

True Right ascension

16h 27m 15s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

-67.06086°

Longitude

-97.61168°

Altitude

524.379 km

Speed

7.607 km/s

Apparent Right ascension

17h 35m 51s

Apparent Declination

-53° 52' 16"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

05:33:31

Azimuth

181.421° SSW

Elevation

-76.039°

Doppler factor

Orbital elements

Apogee altitude

521.585 km

Perigee altitude

495.945 km

Semi-major axis

6,886.902 km

Eccentricity

0.00186

Inclination

97.3737°

RAAN

246.815°

Arg. of periapsis

297.803°

True anomaly

62.32048°

Mean anomaly

62.1317°

Eccentric anomaly

62.22607°

Mean motion

3.79758 °/min

Orbital period

94.8 mins

BSTAR

0.00015893

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Other satellites on launch #102 in the year 2021 (2021-11-09 UTC)

ASTERISC, 49395 (Decayed)

TEIKYOSAT-4 (OORURI), 49396

EPSILON R/B, 49405 (Decayed)

DRUMS TARGET-1, 55685 (Decayed)

DRUMS TARGET-2, 58954 (Decayed)

OBJECT K Visibility forecast

Observer location: undefined°, undefined°

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.
5 mins	2025-07-22 02:31:13.230Z	129.423° SE	2025-07-22 02:33:13.230Z	88.393° E	27.876°	2025-07-22 02:36:13.230Z	14.39° NNE
5 mins	2025-07-22 15:37:13.230Z	33.797° NE	2025-07-22 15:39:13.230Z	111.187° ESE	38.561°	2025-07-22 15:42:13.230Z	175.815° S

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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Authenticating...

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Check out OBJECT K, 49404 on other resources

View OBJECT K, 49404 on Heavens-Above

View OBJECT K, 49404 on Keep Track

View OBJECT K, 49404 on Celestrak

View OBJECT K, 49404 on Gunter's Space Page

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