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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 (5 years ago)

Launch vehicle

EPSILON

Launch site

Kagoshima Space Center University Of Tokyo (KSCUT)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.3 m

Radar Cross Section

0.375 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 Z-SAT
1 49399U 21102E   26155.27984711  .00005599  00000-0  27652-3 0  9991
2 49399  97.3328 190.9944 0014921 295.3918  64.5771 15.18166781251482

Epoch: 2026-06-04T06:42Z

TLE epoch observation values (Epoch: 2026-06-04T06:42:58.790Z)

Latitude

-0.00004°

Longitude

-162.47694°

Altitude

510.07 km

Speed

7.611 km/s

True Right ascension

12h 43m 58s

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

13:52:03

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

518.622 km

Perigee altitude

498.071 km

Semi-major axis

6,886.483 km

Eccentricity

0.00149

Inclination

97.3328°

RAAN

190.9944°

Arg. of periapsis

295.3918°

True anomaly

64.73165°

Mean anomaly

64.5771°

Eccentric anomaly

64.65436°

Mean motion

3.79793 °/min

Orbital period

94.79 mins

BSTAR

0.00027652

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

TEIKYOSAT-4 (OORURI), 49396

HIBARI, 49400

ASTERISC, 49395 (Decayed)

OBJECT D, 49398

OBJECT K, 49404

DRUMS TARGET-2, 58954 (Decayed)

DRUMS, 49401

RAISE 2, 49397

KOSEN-1, 49402

DRUMS TARGET-1, 55685 (Decayed)

OBJECT J, 49403

EPSILON R/B, 49405 (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.
5 mins	2026-06-07 14:23:16.569Z	49.995° ENE	2026-06-07 14:25:16.569Z	83.59° E	17.84°	2026-06-07 14:28:16.569Z	138.724° SSE
4 mins	2026-06-07 15:58:16.569Z	324.367° NNW	2026-06-07 15:59:16.569Z	301.263° NW	23.2°	2026-06-07 16:02:16.569Z	237.583° WSW
5 mins	2026-06-08 02:36:16.569Z	182.14° SSW	2026-06-08 02:38:16.569Z	257.677° W	42.579°	2026-06-08 02:41:16.569Z	340.629° 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: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-06-04T06:42:58.790Z)

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: 3 days ago