| M45 (Mel.22) / Open Cluster, type c, I 3 r n |
| R.A. | 03h 47m 0.0s (2000.0) |
| Dec. | +24° 07' 00" (2000.0) |
| Apparent Size | 100' |
| Real Size | 27 light yrs. |
| # of Stars | 100 |
| Magnitude | 1.4 |
| Distance | 410 light yrs. |
M45, The Pleiades is the most popular Open Cluster seen in the constellation of Taurus.
We can see bright six or seven stars with naked eyes, and these seven go under the name "The Seven Sisters".
The Pleiades is one of the closest star clusters with 410 light-years away, we can detect as a size of about 2 degrees.
It has a huge size, so binoculars are suitable for appreciating this attractive object rather than telescopes.
This cluster is visible easily, so it has various names from ancient times.
For example, the cluster is called "Subaru" in Japan meaning of "bind" or "tie",
this name can be found out in a Japanese ancient literary work, "Makurano-Soushi" in 10th century.
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