Astronomy:NGC 172
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Short description: Barred spiral galaxy in the constellation Cetus
| NGC 172 | |
|---|---|
 NGC 172 as seen on SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus |
| Right ascension | 00h 37m 13.6s[1] |
| Declination | −22° 35′ 13″[1] |
| Redshift | 0.010164[1] |
| Distance | 136 Mly[2] |
| Apparent magnitude (V) | 15.09[1] |
| Characteristics | |
| Type | SB(r)bc?[1] |
| Apparent size (V) | 2.0' × 0.3'[1] |
| Other designations | |
| ESO 474- G 005, MCG -04-02-027, 2MASX J00371359-2235132, 2MASXi J0037135-223513, IRAS 00348-2251, IRAS F00347-2012, ESO-LV 4740050, 6dF J0037136-223513, PGC 2228.[1] | |
NGC 172 is a barred spiral galaxy located around 136 million light-years away[2] in the constellation Cetus.[1] It was discovered in 1886 by astronomer Frank Muller.[3]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "Results for NGC 0172". NASA/IPAC Extragalactic Database. http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+172&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
- ↑ 2.0 2.1 An object's distance from Earth can be determined using Hubble's law: v=Ho is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=Ho
- ↑ "New General Catalog Objects: 150 - 199". http://cseligman.com/text/atlas/ngc1a.htm#172.
External links
- NGC 172 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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