| 41. | The main components of this potentially multiple star system have an orbital period of 18.75 years and an giant.
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| 42. | Though quite faint, Monoceros is chock full of nebulae and star clusters, as well as several multiple star systems.
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| 43. | The most massive star in the Eta Carinae multiple star system has more than 100�times the mass of the Sun.
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| 44. | Research over the last two centuries suggests that half or more of visible stars are part of multiple star systems.
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| 45. | In all, Herschel discovered over 800 confirmed double or multiple star systems, almost all of them physical rather than optical pairs.
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| 46. | The multiple star is located at right ascension and declination . The star system is estimated to be from the Sun.
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| 47. | It is now resolved into a massive multiple star at the centre of one of the densest clusters in the galaxy.
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| 48. | If it is uncertain whether two optical companion stars are gravitationally bound, they should be placed under the category Multiple star systems.
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| 49. | The Washington Double Star Catalog and Catalog of Components of Double and Multiple Stars both list a visual companion 208 " distant.
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| 50. | The next brightest star is Delta Velorum, also a multiple star system and one of the brightest eclipsing binaries in the sky.
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