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... М76 < М77 > М78 ...

Spiral galaxy M77

Spiral galaxy M77 or Cetus A galaxy is in the constellation Cetus (Cet).


Equatorial coordinates (epoch J2000):
Ra 02h 42.7m, Dec +00° 01'

Visual magnitude: 8,9m
Distance to the galaxy M77 to the Sun is 46,9*106 light years
Angular size: 7'×6'
Class: Sb/P
External dimensions the galaxy M77 are about 100000 light years.
Estimated weight the galaxy: 1000x109 suns
The mass of the central object (black hole): 100x106 suns

Discoverer: Pierre François André Méchain, 29.10.1780 year.

The designation M77 in other catalogs: NGC 1068

Optimum magnification for a telescope with observations of M77, depending on the aperture of the telescope (D), is about D/6-D/3. Higher magnifications of course add details, but lead to a strong drop in the brightness of the image, making it difficult to observe.
The best month for observing M77 is November.

Nikolay Kurdyapin,  
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