Star b Ophiuchi
Blue Giant b Ophiuchi is located 81 light years away from the Sun.
It is a single star of spectral class kA5hA9mF1III, that has 177 % of solar mass.
For now, there are no known exoplanets in this star system.
Frequently Asked Questions
How far is the b Ophiuchi system from the Sun?
The b Ophiuchi system is 81 light years or 25.0 parsecs from the Sun.
What galaxy is the b Ophiuchi star in?
The b Ophiuchi is in the Milky Way galaxy just like the Sun.
How many stars are in the b Ophiuchi system?
The b Ophiuchi is a single star, there are no other known stars in the system.
What type of star is the b Ophiuchi?
The star b Ophiuchi is a Blue Giant star.
What temperature is star b Ophiuchi?
The star b Ophiuchi has an effective temperature of 7559 K. Find out more about the temperature of stars in
Stellar guide
Class of stars Blue Giant
The nearest black holes are collapsed massive stars scattered across our Galaxy. The closest known is Gaia BH1, located 1,560 light-years away. If our Solar System were scaled down to the size of a coin, this black hole would still be hundreds of kilometers away. Black holes do not act as cosmic vacuum cleaners; if our Sun were replaced by a black hole of equal mass, the planets would continue orbiting in exactly the same paths, though without light or heat. A black hole's gravity is extreme only very close to its event horizon. Thus, despite millions of stellar black holes residing in the Milky Way, the nearest ones pose no danger to Earth.
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Right ascension: 17h 26m 22.218s
Declination: -24° 10' 32.984'' (southern hemisphere)
Parallax: 40.027
Sun distance: 81.484 ly | 25.0 pc
More about Star position in StellarGuide
Apparent magnitude (V): 4.2
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About Stellar Catalog
Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.
Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.
Stellar Catalog is continuously updated with new information from research papers. Stellar and planetary data are validated by automatic processes as well as humans.
