Galaxies NGC 7752 & NGC 7753
History
The galaxy NGC 7753 was discovered on 12 September 1784 by the German-British astronomer William Herschel with his 18.7 inch reflecting telescope. He cataloged it as II 213. The discovery of the neighboring small galaxy NGC 7752 by RJ Mitchell had to wait until 22 November 1854. He observed the galaxy with the large 72 inch reflecting telescope of his employer William Parsons, 3rd Earl of Rosse. [277]
In Halton Arp's 1966 Atlas of Peculiar Galaxies, the two galaxies are listed as Arp 86, a spiral galaxy with large companions of high surface brightness, similar to M 51 / NGC 5195 (Arp 85). [199]
Physical Properties
The two galaxies are in gravitational interaction and are about 70 Mpc apart. [145, 439]
| Name | RA | Dec | Type | bMag | vMag | B-V | SB | Dim | PA | z | D(z) | Dreyer Description | Identification, Remarks |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NGC 7752 | 23 46 58.5 | +29 27 34 | Gx (E-S0) | 15.0 | 14.3 | 0.7 | 13.5 | 0.9 × 0.5 | 113 | 0.016918 | 71.46 | F, S, lE, p h 2268 | GC 6226; UGC 12779; MCG 5-56-4; MK 1134; Arp 86; CGCG 498-9; ARAK 585; VV 5; 4ZW 165; KCPG 591A |
| NGC 7753 | 23 47 04.8 | +29 29 02 | Gx (SBbc) | 12.8 | 12.0 | 0.8 | 14.0 | 3.3 × 2.1 | 50 | 0.017239 | 72.82 | cF, cL, vlE, vglbM, r | WH II 213; h 2268; GC 5011; UGC 12780; MCG 5-56-5; CGCG 498-10; IRAS 23445+2911; ARAK 585; VV 5; Arp 86; KCPG 591B |
Finder Chart
The galaxy pair NGC 7752/3 is located in the constellation Pegasus. On 20 September it is in opposition to the Sun and crosses the meridian at local midnight. The best observation time is January to December, when it is highest at night.
