| NGC 1042 | |
|---|---|
|   NGC 1042 imaged by the Hubble Space Telescope  | |
| Observation data (J2000 epoch) | |
| Constellation | Cetus | 
| Right ascension | 02h 40m 24.0s [1] | 
| Declination | −08° 26′ 01″ [1] | 
| Redshift | 0.004573 ± 0.000007 [1] | 
| Heliocentric radial velocity | 1,371 ± 2 km/s | 
| Distance | 55.5 Mly (17.02 Mpc) | 
| Group or cluster | NGC 1052 group | 
| Apparent magnitude (V) | 14.0 [1] | 
| Characteristics | |
| Type | SAB(rs)cd [1] | 
| Size | 39,200 ly | 
| Apparent size (V) | 2.3′ × 1.0′ [1] | 
| Other designations | |
| IRAS 02379-0838, MCG -02-07-054, PGC 10122 [1] | |
NGC 1042 is a spiral galaxy located in the constellation Cetus. It was discovered on 10 November 1885 by American astronomer Lewis Swift. [2] The galaxy has an apparent magnitude of 14.0.
NGC 1042 is a low-luminosity active galaxy. [3] [4] Furthermore, its luminosity class is III–IV and it has a broad HI line. [5] It is known that NGC 1042 also hosts an intermediate-mass black hole in its center. [6]
NGC 1042 contains an ultraluminous X-ray source called NGC 1042 ULX1. [7]
NGC 1042 is a late-type galaxy, classified as type SAB(rs)cd. [8] It has a bulgeless structure with spiral arms consisting of two symmetric arms located in the inner side with ceaseless long outer arms, with an Arm Class 9 classification. [9] The spiral galaxy type of NGC 1042 is a mystery; some astronomers classified it a barred spiral galaxy based on ellipse fitting via B- and H-band images, [10] while others classified it an unbarred spiral galaxy. [11] [12] Further evidence by them suggests, the inner arms of NGC 1042 are curved with a bar-like structure that is mistaken as a bar. [13] [4]
NGC 1042 appears near the spiral galaxy NGC 1035 in the sky, with both having similar redshifts. The two objects may therefore be physically associated with each other. [14] In additional, NGC 1042 is also a member of the NGC 1052 group. [15] It is shown to be the only galaxy with a large gas reservoir, indicating it was stripped of gas during a past interaction with NGC 1052. [16]
{{cite book}}:  CS1 maint: multiple names: authors list (link) Media related to  NGC 1042  at Wikimedia Commons
  Media related to  NGC 1042  at Wikimedia Commons