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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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Iframe URL

https://www.satcat.com/sats-embedded/49399?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

49399, 2021-102E

Orbit

SSO

Last TLE update

4 hours ago

Origin

Mitsubishi Heavy Industries (MHI) (JP / JPN)

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

TLE from 4 hours ago

0 Z-SAT
1 49399U 21102E   25202.50570825  .00003114  00000-0  17118-3 0  9993
2 49399  97.3780 242.7769 0016744 323.0145  36.9932 15.14693472203321

Epoch: 2025-07-21T12:08Z

TLE epoch observation values (Epoch: 2025-07-21T12:08:13.192Z)

Latitude

-0.00002°

Longitude

121.2088°

Altitude

515.77 km

Speed

7.611 km/s

True Right ascension

16h 11m 06s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

-57.15182°

Longitude

-70.12578°

Altitude

543.005 km

Speed

7.59 km/s

Apparent Right ascension

20h 33m 15s

Apparent Declination

-76° 20' 22"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

05:19:36

Azimuth

195.323° SSW

Elevation

-48.051°

Doppler factor

Orbital elements

Apogee altitude

530.429 km

Perigee altitude

507.333 km

Semi-major axis

6,897.018 km

Eccentricity

0.00167

Inclination

97.378°

RAAN

242.7769°

Arg. of periapsis

323.0145°

True anomaly

37.10885°

Mean anomaly

36.9932°

Eccentric anomaly

37.051°

Mean motion

3.78923 °/min

Orbital period

95.01 mins

BSTAR

0.00017118

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

ASTERISC, 49395 (Decayed)

TEIKYOSAT-4 (OORURI), 49396

EPSILON R/B, 49405 (Decayed)

DRUMS TARGET-1, 55685 (Decayed)

DRUMS TARGET-2, 58954 (Decayed)

Z-SAT Visibility forecast

Observer location: undefined°, undefined°

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	2025-07-22 02:32:19.727Z	151.804° SSE	2025-07-22 02:35:19.727Z	59.941° ENE	40.357°	2025-07-22 02:38:19.727Z	357.575° N
5 mins	2025-07-22 15:40:19.727Z	6.995° NNE	2025-07-22 15:42:19.727Z	268.785° W	44.56°	2025-07-22 15:45:19.727Z	197.241° SSW

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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Authenticating...

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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.