Jump to content

NGC 6646

From Wikipedia, the free encyclopedia
NGC 6646
NGC 6466, as seen during the Pan-STARRS survey
Observation data (J2000 epoch)
ConstellationLyra
Right ascension18h 29m 38s
Declination39° 51′ 54.5″
Apparent magnitude (V)12.6
Apparent magnitude (B)13.5
Surface brightness13.40 mag/am2
Characteristics
TypeSa/Sa/R
Size~112,000 ly
Other designations
UGC 11258, MCG 7-38-8, PGC 61944, CGCG 228-10

NGC 6646 is a spiral galaxy located in the constellation Lyra.[1] 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).[2] NGC 6646 was discovered by the German-British astronomer William Herschel on 26 June 1802.[3] The luminosity class of NGC 6646 is I.[2]

One supernova has been observed in NGC 6646: SN 2024gqf (type Ia, mag. 19.7).[4]

See also

[edit]
[edit]

References

[edit]
  1. ^ "NGC_6646". simbad.u-strasbg.fr. Retrieved 2024-09-27.
  2. ^ a b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-09-27.
  3. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 6261". Celestial Atlas. Retrieved 10 September 2024.
  4. ^ "SN 2024gqf". Transient Name Server. IAU. Retrieved 30 September 2024.