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>

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https://www.satcat.com/sats-embedded/49404?theme=dark&initialShowStats=false

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Identifier

49404, 2021-102K

Orbit

SSO

Country

JP / JPN

Related business

JAXA (Japan Aerospace Exploration Agency) (JP)

Manufacturer

JAXA

Mission

Spacecraft

Bus & Motor

EPBS, Unknown motor

Mass

~185 kg wet, ~185 kg dry

Launch date (UTC)

2021-11-09 (5 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
Last TLE update: 3 days ago

TLE from 3 days ago

0 OBJECT K
1 49404U 21102K   26155.11506125  .00005533  00000-0  24408-3 0  9994
2 49404  97.3250 196.6612 0016772 261.4073  98.5263 15.22054358251899

Epoch: 2026-06-04T02:45Z

TLE epoch observation values (Epoch: 2026-06-04T02:45:41.292Z)

Latitude

-0.00001°

Longitude

-97.32481°

Altitude

504.47 km

Speed

7.611 km/s

True Right ascension

13h 06m 38s

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

12:28:45

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

508.135 km

Perigee altitude

485.074 km

Semi-major axis

6,874.742 km

Eccentricity

0.00168

Inclination

97.325°

RAAN

196.6612°

Arg. of periapsis

261.4073°

True anomaly

98.71631°

Mean anomaly

98.5263°

Eccentric anomaly

98.62131°

Mean motion

3.80766 °/min

Orbital period

94.55 mins

BSTAR

0.00024408

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

KOSEN-1, 49402

RAISE 2, 49397

TEIKYOSAT-4 (OORURI), 49396

Z-SAT, 49399

OBJECT J, 49403

HIBARI, 49400

ASTERISC, 49395 (Decayed)

DRUMS, 49401

OBJECT D, 49398

DRUMS TARGET-1, 55685 (Decayed)

DRUMS TARGET-2, 58954 (Decayed)

EPSILON R/B, 49405 (Decayed)

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OBJECT K 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.
5 mins	2026-06-07 03:28:11.811Z	210.442° SW	2026-06-07 03:31:11.811Z	277.693° WNW	23.926°	2026-06-07 03:33:11.811Z	316.445° NNW
5 mins	2026-06-07 14:58:11.811Z	50.391° ENE	2026-06-07 15:00:11.811Z	94.507° ESE	22.992°	2026-06-07 15:03:11.811Z	151.955° SSE
4 mins	2026-06-07 16:32:11.811Z	323.636° NNW	2026-06-07 16:34:11.811Z	282.58° WNW	17.883°	2026-06-07 16:36:11.811Z	247.78° W

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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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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

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

OBJECT K, 49404

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-06-04T02:45:41.292Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

OBJECT K Visibility forecast

Co-orbital & Co-planar RSOs

Check out OBJECT K, 49404 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago