NGC 6685
| NGC 6685 | |
|---|---|
 The elliptical galaxy NGC 6685 | |
| Observation data (J2000 epoch) | |
| Constellation | Lyra |
| Right ascension | 18h 39m 58.6199s[1] |
| Declination | +39° 58′ 54.581″[1] |
| Redshift | 0.021905[1] |
| Heliocentric radial velocity | 6567 ± 36 km/s[1] |
| Distance | 309.4 ± 21.8 Mly (94.87 ± 6.68 Mpc)[1] |
| Apparent magnitude (V) | 13.4[1] |
| Characteristics | |
| Type | S0^-?[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
[edit]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
[edit]References
[edit]- ^ 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
[edit]
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
