Back مستكشف طيف الأشعة فوق البنفسجية البعيد Arabic Far Ultraviolet Spectroscopy Explorer Czech Far Ultraviolet Spectroscopic Explorer German Explorador Espectroscópico en el Ultravioleta Lejano Spanish کاوشگر طیفسنج فرابنفش دور Persian FUSE (télescope spatial) French Far Ultraviolet Spectroscopic Explorer Galician טלסקופ החלל FUSE HE Far Ultraviolet Spectroscopic Explorer ID Far Ultraviolet Spectroscopic Explorer Italian
 Far Ultraviolet Spectroscopic Explorer satellite | |
| Names | Explorer 77 MIDEX-0 |
|---|---|
| Mission type | Ultraviolet astronomy |
| Operator | NASA / CSA / CNES Johns Hopkins University Applied Physics Laboratory |
| COSPAR ID | 1999-035A |
| SATCAT no. | 25791 |
| Website | http://fuse.pha.jhu.edu/ |
| Mission duration | 3.5 years (planned) 8 years, 3 months, 23 days (achieved) [1] |
| Spacecraft properties | |
| Spacecraft | Explorer LXXVII |
| Spacecraft type | Far Ultraviolet Spectroscopic Explorer |
| Bus | FUSE |
| Manufacturer | Orbital Sciences Corporation / JHUAPL |
| Launch mass | 1,400 kg (3,100 lb) |
| Dimensions | 5.3 × 1.9 m (17.4 × 6.2 ft) |
| Power | 520 watts |
| Start of mission | |
| Launch date | 24 June 1999, 15:44:00 UTC |
| Rocket | Delta II 7320-10 (Delta 271) |
| Launch site | Cape Canaveral, LC-17A |
| Contractor | McDonnell Douglas |
| Entered service | 1999 |
| End of mission | |
| Deactivated | 18 October 2007 |
| Last contact | 18 October 2007 |
| Orbital parameters | |
| Reference system | Geocentric orbit[2] |
| Regime | Low Earth orbit |
| Perigee altitude | 752 km (467 mi) |
| Apogee altitude | 767 km (477 mi) |
| Inclination | 24.98° |
| Period | 99.80 minutes |
| Instruments | |
| Far Ultraviolet Spectroscopy from 100–1800 Angstrom (A) | |
 FUSE mission patch Explorer program | |
Far Ultraviolet Spectroscopic Explorer (FUSE, Explorer 77, and MIDEX-0) represented the next generation, high-orbit, ultraviolet space observatory covering the wavelength range of 90.5–119.5 nanometre (nm) of the NASA operated by the Johns Hopkins University Applied Physics Laboratory. FUSE was launched on a Delta II launch vehicle on 24 June 1999, at 15:44:00 UTC, as a part of NASA's Origins Program. FUSE detected light in the far ultraviolet portion of the electromagnetic spectrum, which is mostly unobservable by other telescopes. Its primary mission was to characterize universal deuterium in an effort to learn about the stellar processing times of deuterium left over from the Big Bang. FUSE resides in a low Earth orbit, approximately 760 km (470 mi) in altitude, with an inclination of 24.98° and a 99.80 minutes orbital period.[2] Its Explorer program designation is Explorer 77.[3]
- ^ "Far Ultraviolet Spectroscopic Explorer". Space Telescope Science Institute. Retrieved 19 April 2016.
- ^ a b "Trajectory: FUSE (1999-035A)". NASA. 28 October 2021. Retrieved 30 November 2021.
This article incorporates text from this source, which is in the public domain.
- ^ "Display: FUSE (1999-035A)". NASA. 28 October 2021. Retrieved 30 November 2021. This article incorporates text from this source, which is in the public domain.
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