NGC 6886 is a planetary nebula in the constellation Sagitta. It was discovered by Ralph Copeland on September 17, 1884.[3] It is 4.6 ± 1.0 kiloparsec (15.0 ± 3.3 kly) distant from earth, and is composed of a hot central post-AGB star that has 55% of the Sun's mass yet 2700 ± 850 its luminosity, with a surface temperature of 142,000 K. The planetary nebula is thought to have been expanding for between 1280 and 1600 years.[4]
| Emission nebula | |
|---|---|
| Planetary nebula | |
An HST picture of nebula NGC 6886. Credit: ESA/Hubble | |
| Observation data: J2000 epoch | |
| Right ascension | 20h 12m 42.83s[1] |
| Declination | +19° 59′ 22.6″[1] |
| Distance | 4.6 ± 1.0 kiloparsec (15.0 ± 3.3 kly) ly |
| Apparent magnitude (V) | 11.8B[1] |
| Constellation | Sagitta |
| Designations | PK 060.1-07.7,[2] Hen 2-458[1] |
| See also: Lists of nebulae | |
| |
|---|---|
| NGC | |
New General Catalogue 6500 to 6999 | |
|---|---|
| |