| 词条 | NGC 44 |
| 释义 |
| name = NGC 44 | epoch = J2000 | ra = {{RA|00|13|14.0}} | dec = {{DEC|+31|17|26}} | constell = Andromeda | appmag_v = 14[2] }} NGC 44 is a binary star system (both type F4) located in the Andromeda constellation. It was first recorded by John Herschel on November 22, 1827. He noted "not to be seen but in the clearest night" and that it was "extremely faint, very small". Although the stars appear to be at a similar distance, their motion is extremely different from each other. The eastern star is approximately {{val|3430|200}} light-years away, while the western star is approximately {{val|3440|210}} light-years away. While the distances seem similar, the error bars mean the stars could just as easily be 3230 and 3650 light-years from the Sun, or 3630 and 3230 light-years from the Sun. Due to their differing proper motions, the stars were originally further from each other at the time of discovery, ~8.7 arcseconds, compared to today's ~2.8 arcseconds. They will reach their closest apparent separation from each other around 2150, when they will only be separated by roughly 0.72 arcseconds. See also
External links
References1. ^1 {{cite web| title = NGC 44 » Deep Sky Objects Browser| url = http://dso-browser.com/dso/info/NGC/44| accessdate = 2013-07-27}} [1]}}{{Ngc5}}{{Catalogs|NGC=44}}{{Sky|00|13|14.0||31|17|26|190000000}}{{Stars of Andromeda}}{{multi-star-stub}} 5 : NGC objects|Astronomical objects discovered in 1827|Andromeda (constellation)|Binary stars|Discoveries by John Herschel |
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