HST
The Hubble Space Telescope has been observing the universe since 1990 from an orbit around 540 km above Earth. Free of the blurring effects of the atmosphere, it has delivered some of the most detailed images of distant galaxies, nebulae, and planets ever taken.
Orbital data
- NORAD ID
- 20580
- COSPAR ID
- 1990-037B
- Type
- Satellite
- Orbit
- LEO
- Perigee (lowest)
- 476 km
- Apogee (highest)
- 478 km
- Inclination
- 28.47°
- Orbital period
- 94 min
- Launch year
- 1990
- Owner (CelesTrak)
- United States
Orbital data updated: 2026-10-19 · from CelesTrak, refreshed every 2 hours.
About LEO orbit
Low Earth Orbit. Up to 2,000 km altitude. Where most satellites live including the ISS (~420 km), Starlink (~550 km), and Earth observation. Orbital period roughly 90 minutes.
Frequently asked
Can you see Hubble from the ground?
Hubble can be visible to the naked eye as a faint moving point of light. Its orbit is tilted 28.5° to the equator, so it passes overhead only between about 28.5° north and south, climbs 20° or more above the horizon only from latitudes below about 38°, and never rises at all beyond about 51° north or south. It is much fainter than the ISS.
Is Hubble still working?
Yes. Despite its age, Hubble remains operational and continues to return science data, working alongside the newer James Webb Space Telescope.
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