Back NGC 404 Arabic NGC 404 (مجره) ARZ NGC 404 Azerbaijani NGC 404 Byelorussian NGC 404 BS NGC 404 Catalan NGC 404 CE NGC 404 Czech NGC 404 German NGC 404 DIQ
| NGC 404 | |
|---|---|
 NGC 404 by Hubble Space Telescope; 1.68′ view | |
| Observation data (J2000 epoch) | |
| Constellation | Andromeda |
| Right ascension | 01h 09m 27.0s[1] |
| Declination | +35° 43′ 04″[1] |
| Redshift | −48 ± 9 km/s[1] |
| Distance | 10.0 ± 0.7 Mly (3.07 ± 0.21 Mpc)[2][3][4][a] |
| Apparent magnitude (V) | 11.2[1] |
| Characteristics | |
| Type | SA(s)0−[1] |
| Apparent size (V) | 3′.5 × 3′.5[1] |
| Other designations | |
| UGC 718, PGC 4126[1] | |
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NGC 404 is a field galaxy[5] located about 10 million light years away in the constellation Andromeda. It was discovered by William Herschel in 1784, and is visible through small telescopes.[6] NGC 404 lies just beyond the Local Group and does not appear gravitationally bound to it. It is located within 7 arc-minutes of second magnitude star Mirach, making it a difficult target to observe or photograph and granting it the nickname "Mirach's Ghost".[6][7]
- ^ a b c d e f g "NASA/IPAC Extragalactic Database". Results for NGC 404. Retrieved 2006-11-18.
- ^ Cite error: The named reference
jensenetal2003was invoked but never defined (see the help page). - ^ Cite error: The named reference
karachentsevetal2004was invoked but never defined (see the help page). - ^ Karachentsev, I. D.; Kashibadze, O. G. (2006). "Masses of the local group and of the M81 group estimated from distortions in the local velocity field". Astrophysics. 49 (1): 3–18. Bibcode:2006Ap.....49....3K. doi:10.1007/s10511-006-0002-6. S2CID 120973010.
- ^ Materne, J. (April 1979). "The structure of nearby groups of galaxies – Quantitative membership probabilities". Astronomy and Astrophysics. 74 (2): 235–243. Bibcode:1979A&A....74..235M.
- ^ a b Mirach's Ghost (NGC 404), The Internet Encyclopedia of Science, David Darling. Accessed on line August 15, 2008.
- ^ "'Ghost of Mirach' Materializes in Space Telescope Image". Jet Propulsion Laboratory. 31 October 2008. Archived from the original on 16 June 2017. Retrieved 26 September 2013.