Messier 74

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Messier 74
PESSTO Snaps Supernova in Messier 74.jpg
The spiral galaxy, M74 (in the left bottom corner the supernova 2013ej)
Observation data (J2000 epoch)
Constellation Pisces[1]
Right ascension 01h 36m 41.8s[2]
Declination +15° 47′ 01″[2]
Redshift 657 km/s[2]
Distance 30 ± 6 Mly[3]
Apparent magnitude (V) 9.4[4]
Characteristics
Type SA(s)c[2]
Number of stars 100 billion (1×1011)
Size 95,000 ly (diameter)[5]
Apparent size (V) 10′.5 × 9′.5[2]
Other designations
NGC 628, UGC 1149, PGC 5974[2]

Messier 74 (M74, NGC 628) sī chi̍t-ê gîn-hô, tī thian-kiû ê só͘-chāi sī Pisces-chō.

Tsù-kái[siu-kái | kái goân-sí-bé]

  1. R. W. Sinnott, pian. (1988). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation / Cambridge University Press. ISBN 978-0-933346-51-2. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 "NASA/IPAC Extragalactic Database". Results for NGC 628. 2006-08-12 khòaⁿ--ê. 
  3. M. A. Hendry; S. J. Smartt; J. R. Maund; A. Pastorello; L. Zampieri; S. Benetti; et al. (2005). "A study of the Type II-P supernova 2003gd in M74". Monthly Notices of the Royal Astronomical Society. 359 (3): 906–926. arXiv:astro-ph/0501341Freely accessible. Bibcode:2005MNRAS.359..906H. 
  4. "Messier 74". SEDS Messier Catalog. 30 April 2022 khòaⁿ--ê. 
  5. "Messier Object 74". 

Guā-pōo lên-ket[siu-kái | kái goân-sí-bé]