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Collinder 349

Melotte 179, IC 4665

Open cluster in Ophiuchus

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Proper Name	None
Messier Number	None
NGC/IC Number	IC 4665
Other Designations	Collinder 349, Melotte 179
Constellation	Ophiuchus
Right Ascension	17h 46m 18s
Declination	+5° 43' 0"
Distance	c. 1,100 light years c. 337 parsecs
Magnitude	Apparent: +4.19 Absolute: -3.51
Diameter	Apparent: 70' Actual: 23 light years
Number of Stars	c. 30
Optimum Visibility	June / July
Notes	Collinder 349 is a widely scattered open cluster covering an area of the sky comparable to that of the Moon's disc. The cluster as a whole approaches magnitude +4.2, and is visible to the naked eye under ideal conditions. Its individual stars are fainter, with none exceeding magnitude +6.8, and so optical aid is required to see details of the cluster's structure.

Collinder 349 is an open cluster in the constellation of the Serpent Holder. From Earth, it appears to lie in the approximate direction of our Galaxy's Nuclear regions.

Collinder 349 is a cluster of about thirty stars that began to develop less than forty million years ago, lying about 1,100 light years from Earth in the constellation of Ophiuchus. By comparison with most star clusters, these figures make it very young and - relatively speaking - nearby. The cluster is just visible to the naked eye, as a faint point of light somewhat to the south of Rasalhague.

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