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GLOBALSTAR M023, 25621

Orbit data source: Space-Track

GLOBALSTAR M023, 25621 is a payload satellite owned by Globalstar (US) in LEO that was launched on Tue, 09 Feb 1999 UTC via a SOYUZ-U-PVB launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). 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/25621?theme=dark&initialShowStats=false

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Identifier

25621, 1999-004A

Orbit

LEO

Country

US / GLOB

Related business

Globalstar Inc. (US)

Manufacturer

SS/Loral

Mission

Non-operational Commercial Communications

Bus & Motor

LS-400, LS-400 AOCS

Mass

450 kg wet, 380 kg dry

Launch date (UTC)

1999-02-09 (27 years ago)

Launch vehicle

SOYUZ-U-PVB

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 6.0 m

Radar Cross Section

5.587 m², Large (>1 m²)

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

TLE from 8 hours ago

0 GLOBALSTAR M023
1 25621U 99004A   26091.15900538 -.00000047  00000-0  31438-3 0  9991
2 25621  52.0096 256.5479 0010246  46.8856 122.5195 12.62521073252102

Epoch: 2026-04-01T03:48Z

TLE epoch observation values (Epoch: 2026-04-01T03:48:58.064Z)

Latitude

8.23131°

Longitude

-176.67495°

Altitude

1,416.848 km

Speed

7.152 km/s

True Right ascension

04h 40m 22s

True Declination

8° 11' 13"

Sunlit

Object was in daylight 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

17:05:07

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,420.93 km

Perigee altitude

1,404.964 km

Semi-major axis

7,791.084 km

Eccentricity

0.00102

Inclination

52.0096°

RAAN

256.5479°

Arg. of periapsis

46.8856°

True anomaly

122.61843°

Mean anomaly

122.5195°

Eccentric anomaly

122.56897°

Mean motion

3.15607 °/min

Orbital period

114.07 mins

BSTAR

0.00031438

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Other satellites on launch #4 in the year 1999 (1999-02-09 UTC)

GLOBALSTAR M036, 25623

GLOBALSTAR M040, 25622

GLOBALSTAR M038, 25624

SL-4 R/B(1), 25625 (Decayed)

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GLOBALSTAR M023 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.
15 mins	2026-04-01 12:31:14.401Z	192.267° SSW	2026-04-01 12:39:14.401Z	122.723° SE	32.24°	2026-04-01 12:46:14.401Z	64.54° ENE
15 mins	2026-04-01 14:31:14.401Z	245.337° WSW	2026-04-01 14:38:14.401Z	326.482° NNW	43.275°	2026-04-01 14:46:14.401Z	50.403° ENE
13 mins	2026-04-01 16:33:14.401Z	291.967° WNW	2026-04-01 16:39:14.401Z	350.896° N	31.935°	2026-04-01 16:46:14.401Z	54.736° ENE
14 mins	2026-04-01 18:34:14.401Z	311.565° NW	2026-04-01 18:41:14.401Z	23.421° NE	34.696°	2026-04-01 18:48:14.401Z	85.592° E
15 mins	2026-04-01 20:34:14.401Z	306.74° NW	2026-04-01 20:41:14.401Z	249.38° W	44.887°	2026-04-01 20:49:14.401Z	133.027° SE
11 mins	2026-04-01 22:35:14.401Z	278.912° WNW	2026-04-01 22:40:14.401Z	237.151° WSW	22.255°	2026-04-01 22:46:14.401Z	190.546° SSW
5 mins	2026-04-02 11:21:14.401Z	148.997° SSE	2026-04-02 11:25:14.401Z	116.928° SE	17.711°	2026-04-02 11:26:14.401Z	108.414° ESE

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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 GLOBALSTAR M023, 25621 on other resources

View GLOBALSTAR M023, 25621 on NASA - NSSDCA Website

View GLOBALSTAR M023, 25621 on Heavens-Above

View GLOBALSTAR M023, 25621 on Keep Track

View GLOBALSTAR M023, 25621 on Celestrak

View GLOBALSTAR M023, 25621 on Gunter's Space Page

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

GLOBALSTAR M023, 25621

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: 2026-04-01T03:48:58.064Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #4 in the year 1999 (1999-02-09 UTC)

GLOBALSTAR M023 Visibility forecast

Co-orbital & Co-planar RSOs

Check out GLOBALSTAR M023, 25621 on other resources

Documentation

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