NGC 6685
Galaxy in the constellation Lyra
From Wikipedia, the free encyclopedia
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]
Right ascension18h 39m 58.6199s[1]
Declination+39° 58′ 54.581″[1]
| NGC 6685 | |
|---|---|
NGC 6685 imaged by Sloan Digital Sky Survey | |
| 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] | |
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]
