| NGC 1493 | |
|---|---|
 Barred spiral galaxy NGC 1493 | |
| Observation data (J2000 epoch) | |
| Constellation | Horologium |
| Right ascension | 03h 57m 27.4555s[1] |
| Declination | −46° 12′ 38.554″[1] |
| Redshift | 0.003512[1] |
| Heliocentric radial velocity | 1053 ± 1 km/s[1] |
| Distance | 48.3 ± 3.4 Mly (14.81 ± 1.04 Mpc)[1] |
| Group or cluster | NGC 1493 Group |
| Apparent magnitude (V) | 11.3[1] |
| Characteristics | |
| Type | SB(r)cd[1] |
| Size | ~58,300 ly (17.89 kpc) (estimated)[1] |
| Apparent size (V) | 2.8′ × 2.8′[1] |
| Other designations | |
| ESO 249-033, IRAS 03558-4621, 2MASX J03572738-4612386, PGC 14163[1] | |
NGC 1493 is a barred spiral galaxy in the constellation of Horologium. Its velocity with respect to the cosmic microwave background is 1004 ± 4 km/s, which corresponds to a Hubble distance of 48.3 ± 3.4 Mly (14.81 ± 1.04 Mpc).[1] In addition, six non redshift measurements give a distance of 35.38 ± 1.71 Mly (10.848 ± 0.525 Mpc).[2] The galaxy was discovered by Scottish astronomer James Dunlop on 2 September 1826.[3]
The SIMBAD database lists NGC 1493 as a Seyfert II Galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[4]
According to A.M. Garcia, NGC 1493 is a member of the NGC 1493 galaxy group (also known as LGG 106).[5] This group contains six galaxies, including IC 2000, NGC 1483, NGC 1494, PGC 13979, and PGC 14125.
One supernova has been observed in NGC 1493. SN 2024abfo (type II, mag. 16.793) was discovered by ATLAS on 15 November 2024.[6]
- ^ a b c d e f g h i j k "Results for object NGC 1493". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 16 November 2024.
- ^ "Distance Results for NGC 1493". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 16 November 2024.
- ^ Seligman, Courtney. "NGC 1493". Celestial Atlas. Retrieved 16 November 2024.
- ^ "NGC 1493". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 November 2024.
- ^ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
- ^ "SN 2024abfo". Transient Name Server. IAU. Retrieved 16 November 2024.