KOSEN-1

NORAD 49402· COSPAR 2021-102H· Active satellite· Other / Unclassified· SSO

Launch

Launched on Nov 9, 2021 from Mu Center, Japan aboard a Epsilon.

Epsilon | RAISE-2 & others →

Live · TLE epoch 2026-09-07 16:32 UTC

Orbit class

SSO — Sun-Synchronous (LEO at 96–102° inclination)

Operator

JAXA

Country

Japan

Manufacturer

—

Launched

Nov 9, 2021

Mass

—

Apogee

494 km

Perigee

478 km

Inclination

97.31°

Period

1.57 h

Altitude history

Apogee and perigee for KOSEN-1 across 14 days of archived orbital elements (15 element sets, one per day).

Trend

Stable

Change

-0.5 km

Rate

-0.03 km/day

Now

478 × 494 km

Apogee Perigee

Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.

Launched with

5 other catalogued objects still in orbit from launch 2021-102 (Epsilon | RAISE-2 & others).

TEIKYOSAT-4 (OORURI) · 49396
RAISE 2 · 49397
Z-SAT · 49399
HIBARI · 49400
DRUMS · 49401

Sources & further reading

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