NGC 6685
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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] | |
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]
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]
