| NGC 6685 | |
|---|---|
 The elliptical galaxy NGC 6685. | |
| Observation data (J2000 epoch) | |
| Constellation | Lyra |
| Right ascension | 18h 39m 58.6429s[1] |
| Declination | +39° 58′ 54.437″[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' x 0.9'[1] |
| Other designations | |
| PGC 62220, UGC 11317, CGCG 228-021, MCG +07-38-015, 2MASX J18395865+3958541[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)[3] and SN 2023ndu (type Ia, mag 18.5).[4]
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 6685. Retrieved 6 August 2024.
- ^ Celestial Atlas entry for NGC 6685. Retrieved 6 August 2024.
- ^ Transient Name Server entry for SN 2006bq. Retrieved 6 August 2024.
- ^ Transient Name Server entry for SN 2023ndu. Retrieved 6 August 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
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction