Astronomy:NGC 4475
From HandWiki
| NGC 4475 | |
|---|---|
 NGC 4475 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 29m 47.5825s[1] |
| Declination | +27° 14′ 36.039″[1] |
| Redshift | 0.024660±0.000005[1] |
| Helio radial velocity | 7,393±1 km/s[1] |
| Distance | 327.60 ± 10.87 Mly (100.442 ± 3.334 Mpc)[1] |
| Apparent magnitude (V) | 14.3g[1] |
| Characteristics | |
| Type | SAbc[1] |
| Size | ~190,600 ly (58.43 kpc) (estimated)[1] |
| Apparent size (V) | 1.65′ × 0.87′[1] |
| Other designations | |
| UGC 7632, MCG+05-30-008, PGC 41225[1] | |
NGC 4475 is a spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 7,681±20 km/s, which corresponds to a Hubble distance of 369.5 ± 25.9 Mly (113.29 ± 7.94 Mpc).[1] However, 12 non-redshift measurements give a closer mean distance of 327.60 ± 10.87 Mly (100.442 ± 3.334 Mpc).[2] It was discovered by German-British astronomer William Herschel on 11 April 1785.[3][4]
Supernovae
Two supernovae have been observed in NGC 4475:
- SN 2021acnd (Type II, mag. 18.79) was discovered by the Zwicky Transient Facility on 25 October 2021.[5]
- SN 2025nat (Type II, mag. 18.362) was discovered by ATLAS on 7 June 2025.[6]
See also
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 "Results for object NGC 4475". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+4475.
- ↑ "Distance Results for NGC 4475". NASA. https://ned.ipac.caltech.edu/cgi-bin/nDistance?name=NGC+4475.
- ↑ Herschel, William (1789). "Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London 79: 212–255. doi:10.1098/rstl.1789.0021. Bibcode: 1789RSPT...79..212H.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4475". https://cseligman.com/text/atlas/ngc44a.htm#4475.
- ↑ "SN 2021acnd". IAU. https://www.wis-tns.org/object/2021acnd.
- ↑ "SN 2025nat". IAU. https://www.wis-tns.org/object/2025nat.
External links
- NGC 4475 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
12h 29m 47.5825s, +27° 14′ 36.039″
 |  |
