Astronomy:NGC 6646
From HandWiki
| NGC 6646 | |
|---|---|
 NGC 6466 imaged by the Pan-STARRS survey | |
| Observation data (J2000 epoch) | |
| Constellation | Lyra |
| Right ascension | 1 18h 29m 38.742s[1] |
| Declination | +39° 51′ 54.528″[1] |
| Redshift | 0.019227[1] |
| Helio radial velocity | 5764 ± 34 km/s[1] |
| Distance | 271.4 ± 19.1 Mly (83.21 ± 5.87 Mpc)[1] |
| Apparent magnitude (V) | 12.6 |
| Apparent magnitude (B) | 13.5 |
| Characteristics | |
| Type | Sa[1] |
| Size | ~173,900 ly (53.33 kpc) (estimated)[1] |
| Other designations | |
| UGC 11258, MCG+07-38-008, PGC 61944 | |
NGC 6646 is a spiral galaxy located in the constellation Lyra.[2] Its velocity relative to the cosmic microwave background is 5,641 ± 35 km/s, which corresponds to a Hubble distance of 83.2 ± 5.9 Mpc (~271 million ly).[1] NGC 6646 was discovered by German-British astronomer William Herschel on 26 June 1802.[3] The luminosity class of NGC 6646 is I.[1]
One supernova has been observed in NGC 6646: SN 2024gqf (Type Ia, mag. 19.7) was discovered by the Catalina Real-time Transient Survey (SNHunt) on 15 April 2024.[4]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "Your NED Search Results". https://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC_6646&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.
- ↑ "NGC_6646". https://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=NGC_6646&bibdisplay=none.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 6261". https://cseligman.com/text/atlas/ngc66.htm#6646.
- ↑ "SN 2024gqf". IAU. https://www.wis-tns.org/object/2024gqf.
External links
- NGC 6646 at LEDA
- NGC 6646 at SEDS
- NGC 6646 at SkyMap (DSS2)
- NGC 6646 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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