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
- ^ 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.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 6685". Celestial Atlas. Retrieved 15 December 2024.
- ^ 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.
- ^ "SN 2006bq". Transient Name Server. IAU. Retrieved 15 December 2024.
- ^ "SN 2023ndu". Transient Name Server. IAU. Retrieved 15 December 2024.
External links
Media related to NGC 6685 at Wikimedia Commons- NGC 6685 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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