| 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 B-V magnitude |
has absorption line |
is usually part of |
is a kind of |
has apparent magnitude |
has synonym |
has definition |
has luminosity class |
|---|
| A star | | | O, B, A, and early F | | 10000 K | | | white | | | H I | | early star | | | Star with spectral type A in which the spectrum of the Balmer lines of hydrogen attain their greatest strength. Helium lines can no longer be seen. Some metallic lines are present; in late A stars the H and K lines of ionized calcium appear. A0 stars have a color index of zero. | |
| giant | | | | | greater than 1000 Kelvin | | | | | | | | star | | | High-luminosity star that lies above the main sequence on the Hertzsprung-Russell diagram. | III |
| 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 | |
| Alpha Sextantis | 10 7 56.2 | -0 22 18 | A0III | Milky Way | 10000 K | naked eye star | 4.49 | white | for many centuries | -0.04 | H I | asterism | | brighter than 5 | HR 3981 | | III |
Astronomy View all facts Glossary Help
