Messier 1

(Tùi Crab Nebula choán--lâi)

Messier 1 (M1, NGC 1952) sī chi̍t-ê chhiⁿ-hûn, tī thiⁿ-kiû ê ūi-tì tī Kim-gû-chō.

Crab Nebula
Supernova remnant

Hubble Space Telescope mosaic image assembled from 24 individual Wide Field and Planetary Camera 2 exposures taken in October 1999, January 2000, and December 2000
Observation data: J2000.0 epoch
Right ascension 05h 34m 31.94s[1]
Declination +22° 00′ 52.2″[1]
Distance 6500±1600 ly   (2000±500[2] pc)
Apparent magnitude (V) 8.4[3]
Apparent dimensions (V) 420″ × 290″[4][a]
Constellation Taurus
Physical characteristics
Radius ~5.5 ly   (~1.7[5] pc)
Absolute magnitude (V) −3.1±0.5[b]
Notable features Optical pulsar
Designations Messier 1, NGC 1952, Taurus A, Sh2-244[1]
See also: Lists of nebulae

Tsù-kái siu-kái

  1. 1.0 1.1 1.2 "M 1". SIMBAD. Centre de données astronomiques de Strasbourg. 12 February 2012 khòaⁿ--ê. 
  2. Kaplan, David L.; et al. (2008). "A Precise Proper Motion for the Crab Pulsar, and the Difficulty of Testing Spin-Kick Alignment for Young Neutron Stars". The Astrophysical Journal. 677 (2): 1201–1215. arXiv:0801.1142 . Bibcode:2008ApJ...677.1201K. doi:10.1086/529026. 
  3. "Messier 1". SEDS Messier Catalog. 27 April 2022 khòaⁿ--ê. 
  4. Trimble, Virginia Louise (1973). "The Distance to the Crab Nebula and NP 0532". Publications of the Astronomical Society of the Pacific. 85 (507): 579–585. Bibcode:1973PASP...85..579T. doi:10.1086/129507. JSTOR 40675440. 
  5. Hester, J. J. (2008). "The Crab Nebula: An Astrophysical Chimera". Annual Review of Astronomy and Astrophysics. 46: 127–155. Bibcode:2008ARA&A..46..127H. doi:10.1146/annurev.astro.45.051806.110608.