| NGC 6751 | |
|---|---|
A Hubble Space Telescope (HST) image of NGC 6751. Credit: HST/NASA/ESA. |
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| Observation data (Epoch J2000.0) |
|
| Right ascension | 19h 5m 55.6s[1] |
| Declination | -5° 59′ 32.9″[1] |
| Distance | 6.500 Ly |
| Apparent magnitude (V) | 11.9[2] |
| Apparent dimensions (V) | 0.43' |
| Constellation | Aquila |
| Physical characteristics | |
| Radius | 0.215' |
| Absolute magnitude (V) | 11.9 |
| Other designations | GSC 05140-03497, PK 029-05 1, PN Th 1-J, CSI-06-19031, HD 177656, PMN J1905-0559, PN Sa 2-382, EM* CDS 1043, HuLo 1, PN ARO 101, PN G029.2-05.9, GCRV 11549, IRAS 19032-0604, PN VV' 477, SCM 227, GSC2 S3002210353, 2MASX J19055556-0559327, PN VV 219, UCAC2 29903231 . |
| See also: Planetary nebula, Lists of nebulae | |
NGC 6751 is a planetary nebula in the constellation Aquila. The nebula is estimated to be around 0.8 light-years in diameter. The star at the centre of the nebula has a surface temperature of approximately 140,000 K. It has been calculated to be roughly 6,500 light-years away from Earth. It was formed when a star collapsed and threw off its outer layer of gas several thousand years ago.
The nebula was the subject of the winning picture in the 2009 Gemini School Astronomy Contest, in which Australian high school students competed to select an astronomical target to be imaged by Gemini.