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NAVSTAR 54 (USA 177), 28190

Orbit data source: Space-Track

NAVSTAR 54 (USA 177), 28190 is a payload satellite owned by USAF SMC (US) in MEO that was launched on Sat, 20 Mar 2004 UTC via a DELTA 7925-9.5 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/28190?theme=dark&initialShowStats=false

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Identifier

28190, 2004-009A

Orbit

MEO

Country

Related business

United States Space Force (US)

Manufacturer

LMMS/Sunnyvale

Mission

Operational Defense Navigation

Bus & Motor

SERIES 4000, STAR 37XFP

Mass

2,032 kg wet, 910 kg dry

Launch date (UTC)

2004-03-20 (22 years ago)

Launch vehicle

DELTA 7925-9.5

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 9.7 m

Radar Cross Section

13.539 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 3 days ago

TLE from 3 days ago

0 NAVSTAR 54 (USA 177)
1 28190U 04009A   26154.43882672 -.00000034  00000-0  00000-0 0  9999
2 28190  54.8416 276.2428 0115550 172.5074 193.8280  2.00555284162678

Epoch: 2026-06-03T10:31Z

TLE epoch observation values (Epoch: 2026-06-03T10:31:54.628Z)

Latitude

4.92274°

Longitude

-130.17974°

Altitude

20,481.128 km

Speed

3.831 km/s

True Right ascension

18h 38m 46s

True Declination

4° 54' 54"

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

10:55:35

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

20,489.871 km

Perigee altitude

19,876.044 km

Semi-major axis

26,561.094 km

Eccentricity

0.01156

Inclination

54.8416°

RAAN

276.2428°

Arg. of periapsis

172.5074°

True anomaly

193.51591°

Mean anomaly

193.828°

Eccentric anomaly

193.67152°

Mean motion

0.50139 °/min

Orbital period

718.01 mins

BSTAR

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Other satellites on launch #9 in the year 2004 (2004-03-20 UTC)

DELTA 2 DEB, 28193 (Decayed)

DELTA 2 R/B(1), 28191 (Decayed)

DELTA 2 R/B(2) (PAM-D), 28192 (Decayed)

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NAVSTAR 54 (USA 177) 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.
395 mins	2026-06-06 09:15:13.461Z	208.57° SW	2026-06-06 12:15:13.461Z	319.071° NNW	44.317°	2026-06-06 15:50:13.461Z	102.155° 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 NAVSTAR 54 (USA 177), 28190 on other resources

View NAVSTAR 54 (USA 177), 28190 on NASA - NSSDCA Website

View NAVSTAR 54 (USA 177), 28190 on Heavens-Above

View NAVSTAR 54 (USA 177), 28190 on Keep Track

View NAVSTAR 54 (USA 177), 28190 on Celestrak

View NAVSTAR 54 (USA 177), 28190 on Gunter's Space Page

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

NAVSTAR 54 (USA 177), 28190

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: 2026-06-03T10:31:54.628Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #9 in the year 2004 (2004-03-20 UTC)

NAVSTAR 54 (USA 177) Visibility forecast

Co-orbital & Co-planar RSOs

Check out NAVSTAR 54 (USA 177), 28190 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago