Langbahn Team – Weltmeisterschaft

NGC 6685

NGC 6685
The elliptical galaxy NGC 6685
Observation data (J2000 epoch)
ConstellationLyra
Right ascension18h 39m 58.6199s[1]
Declination+39° 58′ 54.581″[1]
Redshift0.021905[1]
Heliocentric radial velocity6567 ± 36 km/s[1]
Distance309.4 ± 21.8 Mly (94.87 ± 6.68 Mpc)[1]
Apparent magnitude (V)13.4[1]
Characteristics
TypeS0^-?[1]
Size~141,400 ly (43.34 kpc) (estimated)[1]
Apparent size (V)1.1′ × 0.9′[1]
Other designations
2MASX J18395865+3958541, UGC 11317, MCG +07-38-015, PGC 62220, CGCG 228-021[1]

NGC 6685 is an elliptical galaxy in the constellation of Lyra. Its velocity with respect to the cosmic microwave background is 6432 ± 37 km/s, which corresponds to a Hubble distance of 94.87 ± 6.68 Mpc (∼310 million light-years).[1] It was discovered by American astronomer Edward Swift on 29 May 1887.[2]

Supernovae

Two supernovae have been observed in NGC 6685:

  • SN 2006bq (type Ia, mag 15.8) was discovered by Tim Puckett and A. Pelloni on 23 April 2006.[3][4]
  • SN 2023ndu (type Ia, mag 18.4555) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 14 July 2023.[5]

See also

References

  1. ^ a b c d e f g h i j k "Results for object NGC 6685". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 6 August 2024.
  2. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 6685". Celestial Atlas. Retrieved 15 December 2024.
  3. ^ Puckett, T.; Pelloni, A.; Sostero, G.; Sehgal, A.; Gagliano, R.; Luckas, P.; Trondal, O.; Schwartz, M.; Li, W.; Lee, E.; Baek, M.; Madison, D. R.; Holmes, R.; Devore, H.; Graves, B. (2006). "Supernovae 2006bq-2006bx". International Astronomical Union Circular (8705): 1. Bibcode:2006IAUC.8705....1P.
  4. ^ "SN 2006bq". Transient Name Server. IAU. Retrieved 15 December 2024.
  5. ^ "SN 2023ndu". Transient Name Server. IAU. Retrieved 15 December 2024.
Quelle: http://en.wikipedia.org/wiki/NGC_6685