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Z-SAT, 49399

Orbit data source: Space-Track

Z-SAT, 49399 is a payload satellite owned by MHI Meiyu (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/49399?theme=dark&initialShowStats=false

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Identifier

49399, 2021-102E

Orbit

SSO

Country

JP / JPN

Related business

Mitsubishi Heavy Industries (MHI) (JP)

Manufacturer

MHI Meiyu

Mission

Operational Commercial Imaging

Bus & Motor

Z-SAT, Unknown motor

Mass

46 kg wet, 46 kg dry

Launch date (UTC)

2021-11-09 (4 years ago)

Launch vehicle

EPSILON

Launch site

Kagoshima Space Center University Of Tokyo (KSCUT)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.3 m

Radar Cross Section

0.375 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 Z-SAT
1 49399U 21102E   26093.24761135  .00008990  00000-0  44746-3 0  9993
2 49399  97.3409 130.8452 0017845 144.5939 215.6484 15.17680141242070

Epoch: 2026-04-03T05:56Z

TLE epoch observation values (Epoch: 2026-04-03T05:56:33.620Z)

Latitude

0°

Longitude

-149.87936°

Altitude

525.945 km

Speed

7.595 km/s

True Right ascension

08h 43m 22s

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

19:51:57

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

522.112 km

Perigee altitude

497.528 km

Semi-major axis

6,887.957 km

Eccentricity

0.00178

Inclination

97.3409°

RAAN

130.8452°

Arg. of periapsis

144.5939°

True anomaly

215.52944°

Mean anomaly

215.6484°

Eccentric anomaly

215.5889°

Mean motion

3.79671 °/min

Orbital period

94.82 mins

BSTAR

0.00044746

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

HIBARI, 49400

ASTERISC, 49395 (Decayed)

OBJECT K, 49404

OBJECT J, 49403

DRUMS TARGET-2, 58954 (Decayed)

TEIKYOSAT-4 (OORURI), 49396

EPSILON R/B, 49405 (Decayed)

DRUMS TARGET-1, 55685 (Decayed)

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Z-SAT 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.
4 mins	2026-04-03 14:26:45.172Z	61.392° ENE	2026-04-03 14:28:45.172Z	100.723° ESE	16.765°	2026-04-03 14:30:45.172Z	135.401° SSE
4 mins	2026-04-03 16:00:45.172Z	329.779° NNW	2026-04-03 16:02:45.172Z	279.944° WNW	23.5°	2026-04-03 16:04:45.172Z	239.153° WSW
6 mins	2026-04-04 02:38:45.172Z	177.808° S	2026-04-04 02:41:45.172Z	303.464° NW	41.391°	2026-04-04 02:44:45.172Z	342.564° N

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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 Z-SAT, 49399 on other resources

View Z-SAT, 49399 on NASA - NSSDCA Website

View Z-SAT, 49399 on Heavens-Above

View Z-SAT, 49399 on Keep Track

View Z-SAT, 49399 on Celestrak

View Z-SAT, 49399 on Gunter's Space Page

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

Z-SAT, 49399

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-04-03T05:56:33.620Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

Z-SAT Visibility forecast

Co-orbital & Co-planar RSOs

Check out Z-SAT, 49399 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago