Messier 42
(對 Orion Nebula 轉來)
| Diffuse nebula | |
|---|---|
 Messier 42个可見光相片。 The entire Orion Nebula in a composite image of visible light and infrared; taken by Hubble Space Telescope怹2006 | |
| Observation data: J2000 epoch | |
| Subtype | Reflection/Emission[2] |
| Right ascension | 05h 35m 17.3s[1] |
| Declination | −05° 23′ 28″[1] |
| Distance | 1,344±20 ly (412[3] pc) |
| Apparent magnitude (V) | 4.0[4] |
| Apparent dimensions (V) | 65×60 arcmins[5] |
| Constellation | Orion |
| Physical characteristics | |
| Radius | 12[a] ly |
| Absolute magnitude (V) | — |
| Notable features | Trapezium cluster |
| Designations |
NGC 1976， M42, LBN 974，Sharpless 281 |
Messier 42 (M42，NGC 1976)
註解 [修改]
- ↑ 1.0 1.1 "NGC 7538". SIMBAD. Centre de données astronomiques de Strasbourg. October 20， 2006 khòaⁿ--ê.
- ↑ Gater, Will; Vamplew, Anton (2010). The Practical Astronomer (1st American pán.). London: DK Pub. p. 242. ISBN 978-0-7566-7324-6.
- ↑ Reid, M。 J。; et al. (2009). "Trigonometric Parallaxes of Massive Star Forming Regions: VI。 Galactic Structure， Fundamental Parameters and Non-Circular Motions". Astrophysical Journal. 700 (1): 137–148. arXiv:0902.3913
. Bibcode:2009ApJ...700..137R. doi:10.1088/0004-637X/700/1/137.
- ↑ "NGC 1976 = M42". SEDS.org. December 13， 2009 khòaⁿ--ê.
- ↑ Revised NGC Data for NGC 1976per Wolfgang Steinicke's Revised New General Catalogue and Index Catalogue.
外部 lên-ket[修改]
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Wikisource有關係本文章的原始文本: |
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Wikisource有關係本文章的原始文本: |
- Orion Nebula photographs taken by Andrew Ainslie Common
怹 1883，part oftheLondon Science Museum's collection - "Animated tour oftheOrion Nebula" Archived June 6, 2013[Date mismatch], at the Wayback Machine.， University of South Wales
- Orion Nebula observed by Chandra/HST
- Orion Nebula observed by Gemini Observatory
- Orion NebulaatESA/Hubble
- Messier 42，SEDS Messier pages and specifically NGC 1976。
- January 2006 Hubble Space Telescope image oftheOrion Nebula
- January 2006 Hubble Space Telescope image oftheTrapezium cluster
- Orion NebulaM42，Hubble Images
- Remarkable new views captured of Orion Nebula， SpaceFlight Now， 2001。
- NightSkyInfo。com – TheGreat Orion Nebula
- Astronomy Picture of the Day
- Spitzer's Orion 2010 April 10
- Planetary Systems Now ForminginOrion 2009 December 22
- Great Orion Nebulae 2008 October 23
- Gray， Meghan; et al. "M42 – Orion Nebula". Deep Sky Videos. Brady Haran.
- The Orion Nebula on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- ESO: Hidden Secrets of Orion’s Clouds incl。 Photos and animations