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TDRS 3, 19548

Orbit data source: Space-Track

TDRS 3, 19548 is a payload satellite owned by GSFC (US) in GEO that was launched on Thu, 29 Sep 1988 UTC via an SPACE SHUTTLE 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/19548?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/19548?theme=dark&initialShowStats=false

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Identifier

19548, 1988-091B

Orbit

GEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

TRW

Mission

Operational Civil Communications

Bus & Motor

TDRS, AOCS

Mass

2,103 kg wet, ~1,673 kg dry

Launch date (UTC)

1988-09-29 (37 years ago)

Launch vehicle

SPACE SHUTTLE

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Hex Cyl + 2 Pan, 8.9 m

Radar Cross Section

13.873 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 4 days ago

TLE from 4 days ago

0 TDRS 3
1 19548U 88091B   26057.84610155 -.00000306  00000-0  00000+0 0  9992
2 19548  12.6852 341.7287 0044225 351.9002  78.3575  1.00261626124288

Epoch: 2026-02-26T20:18Z

TLE epoch observation values (Epoch: 2026-02-26T20:18:23.173Z)

Latitude

11.97023°

Longitude

-49.22456°

Altitude

35,751.528 km

Speed

3.077 km/s

True Right ascension

03h 28m 15s

True Declination

11° 57' 30"

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

07:19:26

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,976.928 km

Perigee altitude

35,603.947 km

Semi-major axis

42,168.575 km

Eccentricity

0.00442

Inclination

12.6852°

RAAN

341.7287°

Arg. of periapsis

351.9002°

True anomaly

78.8544°

Mean anomaly

78.3575°

Eccentric anomaly

78.6059°

Mean motion

0.25065 °/min

Orbital period

1,436.29 mins

BSTAR

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Other satellites on launch #91 in the year 1988 (1988-09-29 UTC)

IUS R/B(1), 19549

IUS R/B(2), 19550

STS 26, 19547 (Decayed)

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TDRS 3 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.
210 mins	2026-03-03 03:36:11.338Z	114.429° SE	2026-03-03 03:36:11.338Z	114.429° SE	16.219°	2026-03-03 07:06:11.338Z	122.239° SE
919 mins	2026-03-03 12:17:11.338Z	120.09° SE	2026-03-03 20:51:11.338Z	102.737° ESE	23.796°	2026-03-04 03:36:11.338Z	114.649° SE

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19548 neighbors

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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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Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out TDRS 3, 19548 on other resources

View TDRS 3, 19548 on NASA - NSSDCA Website

View TDRS 3, 19548 on Heavens-Above

View TDRS 3, 19548 on Keep Track

View TDRS 3, 19548 on Celestrak

View TDRS 3, 19548 on Gunter's Space Page

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

TDRS 3, 19548

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 4 days ago

TLE from 4 days ago

TLE epoch observation values (Epoch: 2026-02-26T20:18:23.173Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #91 in the year 1988 (1988-09-29 UTC)

TDRS 3 Visibility forecast

19548 neighbors

Co-orbital & Co-planar RSOs

Check out TDRS 3, 19548 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 4 days ago