- Source: Eskimo Nebula
The Eskimo Nebula (NGC 2392), also known as the Clown Face Nebula, Lion Nebula, or Caldwell 39, is a bipolar double-shell planetary nebula (PN). It was discovered by astronomer William Herschel in 1787. The formation resembles a person's head surrounded by a parka hood. It is surrounded by gas that composed the outer layers of a Sun-like star. The visible inner filaments are ejected by a strong wind of particles from the central star. The outer disk contains unusual, light-year-long filaments.
NGC 2392 lies about 6500 light-years away, and is visible with a small telescope in the constellation of Gemini.
At the center of NGC 2392, there is an O-type star with a spectral type of O(H)6f.
Historic data
The nebula was discovered by William Herschel on January 17, 1787, in Slough, England. He described it as "A star 9th magnitude with a pretty bright middle, nebulosity equally dispersed all around. A very remarkable phenomenon." NGC 2392 WH IV-45 is included in the Astronomical League's Herschel 400 observing program.
Location
NGC 2392 is located just east of δ Geminorum, just south of the ecliptic.
Naming controversy
On 11 August 2020, the IAU Working Group on Star Names (WGSN), NASA/IPAC Extragalactic Database (NED), and SIMBAD Astronomical Database (CDS) discontinued use of three nicknames that were perceived as offensive - "Eskimo Nebula", "Clown Face Nebula", and "Clownface Nebula" - and strongly recommended the nebula be referred to by its NGC designation in further publications.
See also
List of planetary nebulae
New General Catalogue
Notes
References
External links
NGC 2392 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
APOD (2003-12-07) – NGC 2392
Eskimo Nebula Lowell Observatory
The Structure & Evolution of the Eskimo Planetary Nebula University of Maryland Astronomy Department
A Kinematic Determination of the Structure of the Double Ring Planetary Nebula NGC 2392, the Eskimo Astrophysical Journal v.362, p. 226 October 1990
A Cat's Eye view of the Eskimo from Saturn Maria-Teresa Garc ́ıa-D ́ıaz, Jose-Alberto L ́opez, Wofgang Steffen, Michael G. Richer and Hortensia Riesgo, 2011
Kata Kunci Pencarian:
- Penghargaan Nebula untuk Novel Terbaik
- Daftar objek NGC 2001 - 3000
- Gravity (film)
- Eskimo Nebula
- Dumbbell Nebula
- Nebula
- List of planetary nebulae
- Gemini (constellation)
- Planetary nebula
- NGC 1535
- Eskimo (disambiguation)
- Caldwell catalogue
- Cometary knot
