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GLOBALSTAR M028, 25875

Orbit data source: Space-Track

GLOBALSTAR M028, 25875 is a payload satellite owned by Globalstar (US) in LEO that was launched on Sun, 25 Jul 1999 UTC via a DELTA 7420-10C launch vehicle from the Air Force Eastern Test Range (AFETR). 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/25875?theme=dark&initialShowStats=false

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Identifier

25875, 1999-041D

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)

1999-07-25 (27 years ago)

Launch vehicle

DELTA 7420-10C

Launch site

Air Force Eastern Test Range (AFETR)

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: 14 hours ago

TLE from 14 hours ago

0 GLOBALSTAR M028
1 25875U 99041D   26121.96852192 -.00000090  00000-0  71628-4 0  9992
2 25875  51.9638 322.5008 0063993  44.3892 316.2075 12.50599379230066

Epoch: 2026-05-01T23:14Z

TLE epoch observation values (Epoch: 2026-05-01T23:14:40.293Z)

Latitude

0.00001°

Longitude

113.93976°

Altitude

1,426.602 km

Speed

7.165 km/s

True Right ascension

21h 30m 00s

True Declination

0° 00' 00"

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

20:47:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,512.558 km

Perigee altitude

1,412.21 km

Semi-major axis

7,840.521 km

Eccentricity

0.0064

Inclination

51.9638°

RAAN

322.5008°

Arg. of periapsis

44.3892°

True anomaly

315.69708°

Mean anomaly

316.2075°

Eccentric anomaly

315.95258°

Mean motion

3.12626 °/min

Orbital period

115.15 mins

BSTAR

0.000071628

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Other satellites on launch #41 in the year 1999 (1999-07-25 UTC)

GLOBALSTAR M026, 25873

GLOBALSTAR M043, 25874

DELTA 2 R/B, 25876

GLOBALSTAR M048, 25872

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GLOBALSTAR M028 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.
14 mins	2026-05-02 14:41:22.222Z	187.394° SSW	2026-05-02 14:48:22.222Z	129.825° SE	30.252°	2026-05-02 14:55:22.222Z	67.747° E
16 mins	2026-05-02 16:41:22.222Z	241.404° WSW	2026-05-02 16:49:22.222Z	348.661° N	43.736°	2026-05-02 16:57:22.222Z	51.271° ENE
14 mins	2026-05-02 18:44:22.222Z	287.27° WNW	2026-05-02 18:51:22.222Z	354.84° N	32.405°	2026-05-02 18:58:22.222Z	55.136° ENE
14 mins	2026-05-02 20:47:22.222Z	311.704° NW	2026-05-02 20:54:22.222Z	24.883° NE	34.499°	2026-05-02 21:01:22.222Z	84.478° E
16 mins	2026-05-02 22:48:22.222Z	307.106° NW	2026-05-02 22:55:22.222Z	280.386° WNW	44.914°	2026-05-02 23:04:22.222Z	131.491° SE
12 mins	2026-05-03 00:50:22.222Z	280.671° WNW	2026-05-03 00:55:22.222Z	239.949° WSW	23.488°	2026-05-03 01:02:22.222Z	186.802° SSW

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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 M028, 25875 on other resources

View GLOBALSTAR M028, 25875 on NASA - NSSDCA Website

View GLOBALSTAR M028, 25875 on Heavens-Above

View GLOBALSTAR M028, 25875 on Keep Track

View GLOBALSTAR M028, 25875 on Celestrak

View GLOBALSTAR M028, 25875 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 M028, 25875

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-05-01T23:14:40.293Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #41 in the year 1999 (1999-07-25 UTC)

GLOBALSTAR M028 Visibility forecast

Co-orbital & Co-planar RSOs

Check out GLOBALSTAR M028, 25875 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 14 hours ago