Messier 74

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

Messier 74 (M74，NGC 628) 是 (sī)一个 (chi̍t-ê)銀河 (gîn-hô)，佇 (tī)天球 (thian-kiû)的 (ê)所在 (só͘-chāi)是Pisces造 (chō)。

註解 (Tsù-kái)[修改]

↑ 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.
↑ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 "NASA/IPAC Extragalactic Database". Results for NGC 628. 2006-08-12 khòaⁿ--ê.
↑ 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/0501341 . Bibcode:2005MNRAS.359..906H.
↑ "Messier 74". SEDS Messier Catalog. 30 April 2022 khòaⁿ--ê.
↑ "Messier Object 74".

Messier 74
The spiral galaxy， M74 (怹the left bottom corner the supernova 2013ej)
Observation data (J2000 epoch)
Constellation	Pisces^[1]
Right ascension	01^h 36^m 41.8^s^[2]
Declination	+15° 47′ 01″^[2]
Redshift	657km/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]