IC 4665
From Infogalactic: the planetary knowledge core
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IC 4665 is an open cluster in the constellation Ophiuchus. It was discovered by Philippe Loys de Chéseaux in 1745. The cluster began to develop less than 40 million years ago, and lies about 1,400 light years away from Earth. It is easily visible in the smallest of telescopes and also with binoculars. From a sufficiently dark place it is also visible to the naked eye.
References
External links
- IC 4665 @ SEDS IC objects pages
- IC 4665 www.univie.ac.at
- IC 4665 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- X-Ray Activity in the Open Cluster IC 4665 National Aeronautics and Space Administration
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