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NAVSTAR 17 (USA 49), 20361

Orbit data source: Space-Track

NAVSTAR 17 (USA 49), 20361 is a payload satellite owned by USAF SSD (US) in MEO that was launched on Mon, 11 Dec 1989 UTC via a DELTA 6925 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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<iframe src="https://www.satcat.com/sats-embedded/20361?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/20361?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20361, 1989-097A

Orbit

MEO

Last TLE update

4 days ago

Origin

United States Air Force (US)

Manufacturer

Rockwell/SB

Mission

Non-operational Defense Navigation

Bus & Motor

GPS II, STAR 37F

Mass

1,667 kg wet, 776 kg dry

Launch date (UTC)

1989-12-11 (36 years ago)

Launch vehicle

DELTA 6925

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 2.6 m

Radar Cross Section

7.641 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 4 days ago

0 NAVSTAR 17 (USA 49)
1 20361U 89097A   25230.64405394 -.00000081  00000-0  00000-0 0  9992
2 20361  56.2661  21.4911 0021858 315.1696  47.6803  1.89175613243630

Epoch: 2025-08-18T15:27Z

TLE epoch observation values (Epoch: 2025-08-18T15:27:26.26Z)

Latitude

2.52021°

Longitude

-175.94701°

Altitude

21,197.145 km

Speed

3.805 km/s

True Right ascension

01h 32m 38s

True Declination

2° 30' 59"

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

10:12:10

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

21,298.032 km

Perigee altitude

21,177.307 km

Semi-major axis

27,615.807 km

Eccentricity

0.00219

Inclination

56.2661°

RAAN

21.4911°

Arg. of periapsis

315.1696°

True anomaly

47.86584°

Mean anomaly

47.6803°

Eccentric anomaly

47.77304°

Mean motion

0.47294 °/min

Orbital period

761.2 mins

BSTAR

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Other satellites on launch #97 in the year 1989 (1989-12-11 UTC)

DELTA 2 R/B(1), 20362 (Decayed)

DELTA 2 R/B(2) (PAM-D), 20363 (Decayed)

NAVSTAR 17 (USA 49) Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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.
134 mins	2025-08-23 00:12:17.384Z	324.603° NNW	2025-08-23 01:18:17.384Z	301.016° NW	17.323°	2025-08-23 02:26:17.384Z	274.077° WNW
346 mins	2025-08-23 08:25:17.384Z	170.734° S	2025-08-23 11:07:17.384Z	100° ESE	43.589°	2025-08-23 14:11:17.384Z	59.016° ENE