Messier 1
Messier 1 (M1, NGC 1952) sī chi̍t-ê chhiⁿ-hûn, tī thiⁿ-kiû ê ūi-tì tī Kim-gû-chō.
| 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] |
Tsù-kái
siu-kái- ↑ 1.0 1.1 1.2 "M 1". SIMBAD. Centre de données astronomiques de Strasbourg. 12 February 2012 khòaⁿ--ê.
- ↑ 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.
- ↑ "Messier 1". SEDS Messier Catalog. 27 April 2022 khòaⁿ--ê.
- ↑ 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.
- ↑ 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.
