Chi Ophiuchi
Encyclopedia
Chi Ophiuchi (Chi Oph / χ Ophiuchi / χ Oph) is a Be
star
in the constellation
of Ophiuchus. It has an apparent visual magnitude which varies between 4.18 and 5.0.
Be star
A Be star is a B-type star with prominent emission lines of hydrogen in its spectrum. The designation is combined by the spectral class, B, and the lowercase e denoting emission in the spectral classification system. Line emission from other atomic ions might be present as well, but is typically...
star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
of Ophiuchus. It has an apparent visual magnitude which varies between 4.18 and 5.0.