The Double Cluster in
Perseus, NGC869 and 884
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A map of the star field. Magnitudes are given
without
a decimal point, e.g. 67 is to be interpreted as magnitude
6.7. |
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How to Find It
Between Cassiopeia and the head of Perseus.
Comments
Double the viewing pleasure in one field of view.
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| 60-degree field of view |
| Data for the Double Cluster as a whole |
| RA | 02 21 |
| dec | +57 08 |
| integrated magnitude | 3.5 |
| Data for NGC869 (Janes, Duke, and Lynga,
1987) |
| RA | 02 19 |
| dec | +57 09 |
| total V magnitude | 5.3 |
| NGC number | 869 |
| Trumpler class | I 3 r |
| angular diameter | 18' |
| distance | 2200 pc |
| age (Myr) | 18 |
| integrated B-V | .44 |
| observed stars | 317 |
| earliest sp. class | B0 |
| brightest star | 7.0 |
| Data for NGC884 (Janes, Duke, and Lynga,
1987) |
| RA | 02 22 |
| dec | +57 07 |
| total V magnitude | |
| NGC number | 884 |
| Trumpler class | I 3 r |
| angular diameter | 18' |
| distance | 2200 pc |
| age (Myr) | 3.2 |
| integrated B-V | .48 |
| observed stars | 303 |
| earliest sp. class | B0 |
| brightest star | 7.0 |
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(c) Copyright 1998 Benjamin Crowell. All right reserved.
Photos from the Digitized Sky Survey,
stdatu.stsci.edu/dss/dss_form.html
Sky maps created by Your Sky, www.fourmilab.com
