Living Person
TDRS-4
is
As of April 14, 2026
37 years old
approximately!
Date of Birth
(1989 ) is
Snake
Year
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
approx.Cosmic Age Calculator
Moon
approx. 499.6 years old
Mercury
approx. 155.2 years old
Venus
approx. 60.7 years old
Mars
approx. 19.9 years old
Jupiter
approx. 3.2 years old
Saturn
approx. 1.3 years old
* Calculated based on each planet's orbital period.
 TDRS-D being deployed from Discovery | |
| Mission type | Communication |
|---|---|
| Operator | NASA |
| COSPAR ID | 1989-021B |
| SATCAT no. | 19883 |
| Mission duration | Planned: 10 years Final: 22 years, 9 months |
| Spacecraft properties | |
| Bus | TDRS |
| Manufacturer | TRW |
| Launch mass | 2,108 kg (4,647 lb) |
| Dimensions | 17.3 × 14.2 m (57 × 47 ft) |
| Power | 1700 watts |
| Start of mission | |
| Launch date | 13 March 1989, 14:57:00 UTC |
| Rocket | Space Shuttle Discovery STS-29R / IUS |
| Launch site | Kennedy Space Center, LC-39B |
| Contractor | Rockwell International |
| End of mission | |
| Disposal | Retired to graveyard |
| Declared | December 2011 |
| Deactivated | May 2012 |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Geostationary orbit |
| Longitude | 41.0° West (1988–2005) 46.0° West (2005–2011) |
| Epoch | 14 March 1989 |
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