 |
CONSTELLATION OF CORONA BOREALIS |
Name: Corona Borealis
Abbreviation: CrB
Meaning: Northern Crown
Right Ascension: 16h
Declination: +30º
Area (Degrees squared): 179
Stars with known planets: 3
Bordering Constellations: Hercules, Bootes, Serpens
Visible at latitudes between +90º and -50º and best at 21.00h during July. In the northern hemisphere, the constellation of Corona Australis is considered a
summer constellation and is visible from March to October depending on the time of night.
Corona Borealis was one of the 48 constellations listed by the 1st century astronomer Ptolemy and remains one of the 88 modern constellations.
|
| Corona Borealis |
 |
| Observations |
Deep Sky Objects:
The most impressive deep sky object is the Corona Borealis Galaxy Cluster known as Abell 2065 (named by George Abell who catalogued galaxy groups in the 1950s).
The group is faint but quite spectacular for those with the proper equipment. The cluster comprises over four hundred galaxies in an area of about one degree
(the width of your thumb). At a mind boggling almost one and a half billion light years away, the galaxies are extremely distant and are consequently faint. The brightest
of the group is +15.5 apparent magnitude.
To find the cluster, move two degrees west of alpha CrB (number 3) and north almost a full degree. In the same field, southwest, is the sixth magnitude binary
Struve 1932 (PA 57, separation 1") with a period of 203 years.
Numbered Stars with Magnitudes:
1. +4.20
2. +3.65 - Nusakan
3. +2.20 - Alphekka
4. +4.05
5. +4.55
6. +4.10
7. +4.95
|
|
|
|
|
|
|
|
|
|
In-Site Links: