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OSCAR 16 (PACSAT), 20439

Orbit data source: Space-Track

OSCAR 16 (PACSAT), 20439 is a payload satellite owned by AMSAT-NA (US) in SSO that was launched on Mon, 22 Jan 1990 UTC via an ARIANE 40 launch vehicle from the French Guiana (FRGUI). 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/20439?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/20439?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20439, 1990-005D

Orbit

SSO

Last TLE update

9 hours ago

Origin

AMSAT North America (Radio Amateur Satellite Corp) (US)

Manufacturer

AMSAT-NA

Mission

Non-operational Amateur Communications

Bus & Motor

MICROSAT, Unknown motor

Mass

10 kg wet, 10 kg dry

Launch date (UTC)

1990-01-22 (35 years ago)

Launch vehicle

ARIANE 40

Launch site

French Guiana (FRGUI)

Object type

Payload

Rocket body

Debris

Shape & HBR

Hex Poly, 0.23 m

Radar Cross Section

0.060 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 9 hours ago

0 OSCAR 16 (PACSAT)
1 20439U 90005D   25124.83176492  .00000244  00000-0  10479-3 0  9990
2 20439  98.8907 144.9808 0010419 355.7229 182.1144 14.33756484843419

Epoch: 2025-05-04T19:57Z

Definitive object data (Epoch: 2025-05-04T19:57:44.489Z)

Latitude

2.0368°

Longitude

162.90847°

Altitude

789.342 km

Speed

7.455 km/s

True Right ascension

21h 41m 11s

True Declination

2° 01' 29"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

-63.57748°

Longitude

144.71432°

Altitude

806.015 km

Speed

7.448 km/s

Apparent Right ascension

22h 58m 02s

Apparent Declination

-56° 06' 35"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

12:31:42

Azimuth

144.298° SSE

Elevation

-67.684°

Doppler factor

Orbital elements

Apogee altitude

783.805 km

Perigee altitude

768.897 km

Semi-major axis

7,154.488 km

Eccentricity

0.0010419

Inclination

98.8907°

RAAN

144.9808°

Arg. of periapsis

355.7229°

True anomaly

182.11°

Mean anomaly

182.1144°

Eccentric anomaly

182.1122°

Mean motion

3.58654 °/min

BSTAR

0.00010479

Orbital period

100.38 mins

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Other satellites on launch #5 in the year 1990 (1990-01-22 UTC)

SPOT 2, 20436

OSCAR 14 (UOSAT 3), 20437

OSCAR 15 (UOSAT 4), 20438

OSCAR 17 (DOVE), 20440

OSCAR 18 (WEBERSAT), 20441

OSCAR 19 (LUSAT), 20442

ARIANE 40 R/B, 20443

OSCAR 16 (PACSAT) Visibility forecast

Observer location: undefined°, undefined°

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.
9 mins	2025-05-05 14:07:55.963Z	16.713° NNE	2025-05-05 14:12:55.963Z	155.695° SSE	43.742°	2025-05-05 14:16:55.963Z	190.167° SSW
8 mins	2025-05-06 01:24:55.963Z	174.964° S	2025-05-06 01:27:55.963Z	235.324° WSW	43.712°	2025-05-06 01:32:55.963Z	342.147° N

Authenticating...

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Check out OSCAR 16 (PACSAT), 20439 on other resources

View OSCAR 16 (PACSAT), 20439 on NASA - NSSDCA Website

View OSCAR 16 (PACSAT), 20439 on Heavens-Above

View OSCAR 16 (PACSAT), 20439 on Keep Track

View OSCAR 16 (PACSAT), 20439 on Celestrak

View OSCAR 16 (PACSAT), 20439 on Gunter's Space Page

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