NGC 6754
Galaxy in the constellation Telescopium
From Wikipedia, the free encyclopedia
NGC 6754 is a barred spiral galaxy in the constellation of Telescopium. Its velocity with respect to the cosmic microwave background is 3176 ± 11 km/s, which corresponds to a Hubble distance of 152.8 ± 10.7 Mly (46.84 ± 3.29 Mpc).[1] Additionally, 10 non-redshift measurements give a closer distance of 137.15 ± 4.19 Mly (42.05 ± 1.285 Mpc).[2] It was discovered by British astronomer John Herschel on 8 July 1834.[3]
| NGC 6754 | |
|---|---|
NGC 6754 imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Telescopium |
| Right ascension | 19h 11m 25.7664s[1] |
| Declination | −50° 38′ 31.397″[1] |
| Redshift | 0.010864[1] |
| Heliocentric radial velocity | 3257 ± 10 km/s[1] |
| Distance | 152.8 ± 10.7 Mly (46.84 ± 3.29 Mpc)[1] |
| Apparent magnitude (V) | 12.1[1] |
| Characteristics | |
| Type | SB(rs)b[1] |
| Size | ~143,500 ly (43.99 kpc) (estimated)[1] |
| Apparent size (V) | 1.8′ × 0.9′[1] |
| Other designations | |
| ESO 231- G 025, IRAS 19075-5043, 2MASX J19112359-5038309, PGC 62871[1] | |
According to the SIMBAD database, NGC 6754 is an Active Galaxy Nucleus Candidate, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.[4]
Supernovae
Four supernovae have been observed in NGC 6754:
- SN 1998X (Type II, mag. 17) was discovered by the Perth Astronomical Research Group on 13 March 1998.[5][6]
- SN 1998dq (Type Ia, mag. 14.3) was discovered by Brett White on 23 August 1998.[7][8]
- SN 2000do (Type Ia, mag. 15.6) was discovered by Brett White on 30 September 2000.[9][10]
- SN 2005cu (Type II, mag. 16.1) was discovered by Berto Monard on 10 July 2005.[11][12]
