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 the 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).[4]

See also

References

  1. ^ a b c d e f g h i "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-09-27.
  2. ^ "NGC_6646". simbad.u-strasbg.fr. 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.
Allikas: https://en.wikipedia.org/wiki/NGC_6646
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