| Subject |
has right ascension |
has declination |
has spectral type |
is part of |
has surface temperature |
is an instance of |
has V magnitude |
has color |
has been observ |
has symbol |
has B-V magnitude |
has absorption line |
is usually part of |
is a kind of |
has apparent magnitude |
has synonym |
has definition |
has luminosity class |
|---|
| B star | | | O, B, A, and early F | | 11000 to 28000 K | | | blue-white | | | | He I | | early star | | | Blue-white star of spectral type B whose spectra are characterized by absorption lines of neutral helium which reach their maximum intensity at B2. The Balmer lines of hydrogen are strong, and lines of singly ionized oxygen and other gases are also present. | |
| dwarf | | | | | greater than 1000 Kelvin | | | | | d | | | | star | | main sequence star | Star with mass equal to or less than that of the sun. More generally, any star on or below the main sequence in the Hertzprung-Russell diagram. | V |
| naked eye star | | | | Milky Way | greater than 1000 Kelvin | | | | for many centuries | | | | asterism | naked eye object | brighter than 5 | | A star visible without visual aids | |
| Beta Librae | 15 17 0.3 | -9 22 59 | B8V | Milky Way | 11000 to 28000 K | naked eye star | 2.61 | blue-white | for many centuries | d | -0.11 | He I | asterism | | brighter than 5 | HR 5685 | | V |
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