Galaxy NGC 157
History
This galaxy was discovered by William Herschel on 13 December 1783 using his 18.7 inch reflector. He cataloged it as II 3 and noted: «Faint, large, much extended, between two considerably bright stars.» [463] Dreyer added it as NGC 157 to his «New General Catalogue» published in 1888. [313]
Physical Properties
| Designation | NGC 157 |
| Type | Gx (SBbc) |
| Right Ascension (J2000.0) | 00h 34m 46.4s |
| Declination (J2000.0) | -08° 23' 46" |
| Diameter | 3.5 × 2.4 arcmin |
| Photographic (blue) magnitude | 11.0 mag |
| Visual magnitude | 10.4 mag |
| Surface brightness | 12.9 mag·arcmin-2 |
| Position Angle | 36° |
| Redshift (z) | 0.005510 |
| Distance derived from z | 23.27 Mpc |
| Metric Distance | 19.500 Mpc |
| Dreyer Description | pB, L, E, bet 2 cB st |
| Identification, Remarks | WH II 3; GC 78; MCG -2-2-56 |
Finder Chart
The galaxy is located in the constellation Cetus. The best observation time is September to December.
