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KOSEN-1, 49402

Orbit data source: Space-Track

KOSEN-1, 49402 is a payload satellite owned by Kochi College (JP) in SSO that was launched on Tue, 09 Nov 2021 UTC via an EPSILON launch vehicle from the Kagoshima Space Center University Of Tokyo (KSCUT). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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https://www.satcat.com/sats-embedded/49402?theme=dark&initialShowStats=false

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Identifier

49402, 2021-102H

Orbit

SSO

Country

JP / JPN

Related business

Kochi University of Technology (JP)

Manufacturer

Kochi College

Mission

Operational Amateur Astronomy

Bus & Motor

CUBESAT 2U, Unknown motor

Mass

3 kg wet, 3 kg dry

Launch date (UTC)

2021-11-09 (5 years ago)

Launch vehicle

EPSILON

Launch site

Kagoshima Space Center University Of Tokyo (KSCUT)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.1 m

Radar Cross Section

0.025 m², Medium (>0.1 m² and < 1m²)

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

TLE from 3 days ago

0 KOSEN-1
1 49402U 21102H   26154.90232190  .00007870  00000-0  30231-3 0  9993
2 49402  97.3187 197.3187 0012071 251.0135 108.9797 15.26641992251992

Epoch: 2026-06-03T21:39Z

TLE epoch observation values (Epoch: 2026-06-03T21:39:20.612Z)

Latitude

0.00007°

Longitude

-19.87147°

Altitude

491.665 km

Speed

7.618 km/s

True Right ascension

13h 09m 16s

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

11:17:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

491.094 km

Perigee altitude

474.531 km

Semi-major axis

6,860.95 km

Eccentricity

0.00121

Inclination

97.3187°

RAAN

197.3187°

Arg. of periapsis

251.0135°

True anomaly

109.11044°

Mean anomaly

108.9797°

Eccentric anomaly

109.04508°

Mean motion

3.81915 °/min

Orbital period

94.26 mins

BSTAR

0.00030231

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

Z-SAT, 49399

ASTERISC, 49395 (Decayed)

TEIKYOSAT-4 (OORURI), 49396

DRUMS TARGET-1, 55685 (Decayed)

DRUMS TARGET-2, 58954 (Decayed)

EPSILON R/B, 49405 (Decayed)

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

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KOSEN-1 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.
6 mins	2026-06-07 02:51:53.469Z	166.15° S	2026-06-07 02:54:53.469Z	2.51° NNE	44.621°	2026-06-07 02:57:53.469Z	348.837° N
5 mins	2026-06-07 15:53:53.469Z	357.828° N	2026-06-07 15:55:53.469Z	268.759° W	41.48°	2026-06-07 15:58:53.469Z	204.039° SW

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

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Check out KOSEN-1, 49402 on other resources

View KOSEN-1, 49402 on NASA - NSSDCA Website

View KOSEN-1, 49402 on Heavens-Above

View KOSEN-1, 49402 on Keep Track

View KOSEN-1, 49402 on Celestrak

View KOSEN-1, 49402 on Gunter's Space Page

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

KOSEN-1, 49402

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: 2026-06-03T21:39:20.612Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

KOSEN-1 Visibility forecast

Co-orbital & Co-planar RSOs

Check out KOSEN-1, 49402 on other resources

Documentation

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