NAVSTAR 54 (USA 177) 🛰 - GPS BIIR-11, SVN 59, PRN 19, SLOT C5

NAVSTAR 54 (USA 177)

28190

Spacetrack Directory Number

2004-03-20

Orbit launches

20191.32 km

Average height

13945.65 km/h

Average velocity

Satellite information NAVSTAR 54 (USA 177)

Spacetrack Directory Name	NAVSTAR 54 (USA 177)
Alternative name	GPS BIIR-11, SVN 59, PRN 19, SLOT C5
Group	GPS
Follow NAVSTAR 54 (USA 177)	NAVSTAR 54 (USA 177) Tracker
Group follow GPS	Tracker GPS
Pass predictions NAVSTAR 54 (USA 177)	Pass predictions NAVSTAR 54 (USA 177)
Orbit launches	2004-03-20 (22 years ago)
Days in orbit	8143
Country/organisation of origin	USA (US)
Starting point	AFETR (Kennedy Space Center/Cape Canaveral, USA)
Type	Satellite
Categories
Perigee	19951 km
Apogee	20414 km
Orbit slope (inclination)	54.82°
Laps per day	2
Height NAVSTAR 54 (USA 177)	20191.32 km

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Additional information NAVSTAR 54 (USA 177)

NAVSTAR 54 (USA 177), also known as GPS IIR-11, is a US satellite manufactured by LMMS and launched on March 20, 2004, from the Air Force Eastern Test Range (AFETR) at SLC17B using a Delta 7925-9.5 launch vehicle. It has dimensions of 1.5 meters in length, 1.9 meters in diameter, and a span of 19.3 meters when its solar arrays are deployed. The satellites dry mass is 910 kg, with a launch mass of 1077 kg. It is part of the GPS constellation (GPS SVN 59) and serves navigation purposes. Its power source includes two deployable solar arrays and batteries. NAVSTAR 54 has a mission lifetime of 10 years and employs a Star 37XFP motor for propulsion. The satellites shape consists of a box structure with two panels, and it features an RCS (Reaction Control System) value of 7.9432. It is owned by AFSMC and operates under the configuration AS-4000 within the Series 4000 bus family.

satellite NAVSTAR 54 (USA 177) Date of exalting 20.03.2004y. Average height of ISS NAVSTAR 54 (USA 177) hundred 20191.32 km. Average velocity NAVSTAR 54 (USA 177) is 13945.65 km/h. Inclination NAVSTAR 54 (USA 177) satellite 54.97°.

TLE

TLE (Celestrak, 2026-07-06):

NAVSTAR 54 (USA 177)
1 28190U 04009A   26185.33985068 -.00000020  00000+0  00000+0 0  9998
2 28190  54.8153 274.9939 0116793 173.8654 183.6312  2.00554193163285

OMM (Orbit Mean-Elements Message, 2026-07-06):

{"OBJECT_NAME":"NAVSTAR 54 (USA 177)","OBJECT_ID":"2004-009A","EPOCH":"2026-07-04T08:09:23.098752","MEAN_MOTION":"2.0055418600000001","ECCENTRICITY":"0.011679500000000001","INCLINATION":"54.815399999999997","RA_OF_ASC_NODE":"274.9939","ARG_OF_PERICENTER":"173.8732","MEAN_ANOMALY":"183.6232","EPHEMERIS_TYPE":"0","CLASSIFICATION_TYPE":"U","NORAD_CAT_ID":"28190","ELEMENT_SET_NO":"999","REV_AT_EPOCH":"16328","BSTAR":"0","MEAN_MOTION_DOT":"-1.9999999999999999E-7","MEAN_MOTION_DDOT":"0"}

Show JSON

ISS height, average height of ISS NAVSTAR 54 (USA 177) for today will be available tomorrow.

Average orbit height NAVSTAR 54 (USA 177)

Average velocity NAVSTAR 54 (USA 177)

Average inclination NAVSTAR 54 (USA 177)

Update time: 2026-07-06 06:08:11

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NAVSTAR 54 (USA 177)