Nu2 Arae
Star in the constellation Ara / From Wikipedia, the free encyclopedia
Nu2 Arae, Latinized from ν2 Arae, is the Bayer designation for a star in the southern constellation of Ara. It is approximately 570 light-years (170 parsecs) from the Earth and is faintly visible to the naked eye with an apparent visual magnitude of 6.10.[2] The stellar classification of B9.5 III-IV[3] shows this to be a B-type star with a spectrum that displays features part way between the subgiant and giant star stages.
For other stars with this Bayer designation, see Nu Arae.
Quick Facts Observation data Epoch J2000.0 Equinox J2000.0, Constellation ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
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Constellation | Ara |
Right ascension | 17h 51m 11.04526s[1] |
Declination | –53° 07′ 48.9705″[1] |
Apparent magnitude (V) | 6.10[2] |
Characteristics | |
Spectral type | B9.5 III-IV[3] |
B−V color index | +0.01[2] |
Astrometry | |
Radial velocity (Rv) | +18.8±1.2[4] km/s |
Proper motion (μ) | RA: +14.855[1] mas/yr Dec.: +0.548[1] mas/yr |
Parallax (π) | 5.7499 ± 0.1048 mas[1] |
Distance | 570 ± 10 ly (174 ± 3 pc) |
Absolute magnitude (MV) | +0.14[5] |
Details | |
Luminosity | 85[5] L☉ |
Other designations | |
Database references | |
SIMBAD | data |
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The star is sometimes referred as Upsilon2 Arae (υ2 Arae).[7]