Galaxy NGC 846
History
French astronomer Jean Marie Édouard Stephan discovered the galaxy NGC 846 on 2 November 1875 using the 31-inch Foucault reflector at Marseille observatory. His published accurate position was measured on 22 November 1876 with description: «Extremely faint, extremely small, round, gradually brighter in the middle.» Lewis Swift found the galaxy again on 30 November 1885 using the 16-inch refractor at Warner Observatory, Rochester and reported it as new in his 3rd list, #9 (later NGC 847). So, NGC 846 = NGC 847, with discovery priority to Stephan. [364]
On 4 November 1875 Édouard Stephan discovered NGC 812. His accurate published position (list 8b, #3) was made on 11 December 1876 with description: «Extremely faint, thin shape, extended 45° with the meridian [135°], 1.5' length, bright middle, difficult observation.» [364]
Physical Properties
| Name | RA | Dec | Type | bMag | vMag | B-V | SB | Dim | PA | z | D(z) | Dreyer Description | Identification, Remarks |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NGC 812 | 02 06 51.7 | +44 34 21 | Gx (Sbc) | 12.1 | 11.3 | 0.8 | 11.8 | 2.2 × 0.8 | 160 | 0.017222 | 72.74 | eF, pL, E 45°, bM | GC 5214; UGC 1598; MCG 7-5-14; CGCG 538-19; IRAS 02037+4419 |
| NGC 846 | 02 12 12.1 | +44 34 05 | Gx (SBab) | 12.9 | 12.1 | 0.8 | 13.2 | 1.9 × 1.7 | 140 | 0.017072 | 72.11 | eF, vS, R, gbM | GC 5226; NGC 847; UGC 1688; MCG 7-5-24; CGCG 538-32; IRAS 02090+4420 |
| NGC 847 | 02 12 12.1 | +44 34 05 | dup | 12.9 | 12.1 | 0.8 | 13.2 | 1.9 × 1.7 | 140 | 0.017072 | 72.11 | vF, pL, R | NGC 846; UGC 1688; MCG 7-5-24; CGCG 538-32; IRAS 02090+4420 |
Finder Chart
The galaxy NGC 846 is located in the constellation Andromeda. On 29 October it is in opposition to the Sun and crosses the meridian at local midnight.
