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ASIASAT 1, 20558

Orbit data source: Space-Track

ASIASAT 1, 20558 is a payload satellite owned by Asiasat (HK) in GEO that was launched on Sat, 07 Apr 1990 UTC via a CHANG ZHENG 3 launch vehicle from the Xichang Space Center, China (XSC). 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/20558?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/20558?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20558, 1990-030A

Orbit

GEO

Last TLE update

12 hours ago

Origin

AsiaSat (AC)

Manufacturer

Hughes

Mission

Non-operational Commercial Communications

Bus & Motor

HS-376, TE-M-700-18

Mass

1,244 kg wet, ~550 kg dry

Launch date (UTC)

1990-04-07 (35 years ago)

Launch vehicle

CHANG ZHENG 3

Launch site

Xichang Space Center, China (XSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 3.3 m

Radar Cross Section

12.995 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 12 hours ago

0 ASIASAT 1
1 20558U 90030A   25224.40906725 -.00000169  00000-0  00000-0 0  9997
2 20558  14.8832   1.3544 0001325 238.3805 158.5062  0.99242150 43157

Epoch: 2025-08-12T09:49Z

TLE epoch observation values (Epoch: 2025-08-12T09:49:03.41Z)

Latitude

8.86611°

Longitude

-71.06897°

Altitude

36,081.841 km

Speed

3.064 km/s

True Right ascension

02h 29m 11s

True Declination

8° 51' 26"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-9.94363°

Longitude

114.25101°

Altitude

36,073.879 km

Speed

3.064 km/s

Apparent Right ascension

15h 06m 16s

Apparent Declination

-16° 47' 37"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

12:42:07

Azimuth

141.902° SSE

Elevation

24.102°

Doppler factor

Orbital elements

Apogee altitude

36,084.318 km

Perigee altitude

36,073.067 km

Semi-major axis

42,456.829 km

Eccentricity

0.00013

Inclination

14.8832°

RAAN

1.3544°

Arg. of periapsis

238.3805°

True anomaly

158.51176°

Mean anomaly

158.5062°

Eccentric anomaly

158.50898°

Mean motion

0.2481 °/min

Orbital period

1,451.04 mins

BSTAR

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Other satellites on launch #30 in the year 1990 (1990-04-07 UTC)

CZ-3 R/B, 20559

ASIASAT 1 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.
1440 mins	2025-08-12 22:16:08.872Z	141.912° SSE	2025-08-13 13:19:08.872Z	124.423° SE	36.433°	2025-08-13 22:16:08.872Z	145.478° SSE

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20558 neighbors

Authenticating...

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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Authenticating...

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Check out ASIASAT 1, 20558 on other resources

View ASIASAT 1, 20558 on NASA - NSSDCA Website

View ASIASAT 1, 20558 on Heavens-Above

View ASIASAT 1, 20558 on Keep Track

View ASIASAT 1, 20558 on Celestrak

View ASIASAT 1, 20558 on Gunter's Space Page

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