| 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) | 11.8[1] |
| Constellation | Sagitta |
| Designations | PK 060.1-07.7,[2] Hen 2-458[1] |
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]
- ^ a b c d "NGC 6886". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 August 2015.
- ^ Pottasch, S. R.; Surendiranath, R. (March 2005). "Abundances in planetary nebulae: NGC 6886". Astronomy and Astrophysics. 432 (1): 139–148. Bibcode:2005A&A...432..139P. CiteSeerX 10.1.1.669.8581. doi:10.1051/0004-6361:20042006. S2CID 124871522.
- ^ Seligman, Courtney. "NGC Objects: NGC 6850 - 6899". Retrieved 22 August 2015.
- ^ Schönberner, D.; Balick, B.; Jacob, R. (2018). "Expansion patterns and parallaxes for planetary nebulae". Astronomy & Astrophysics. 609: A126. Bibcode:2018A&A...609A.126S. doi:10.1051/0004-6361/201731788.