Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
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 |
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.
The star is sometimes referred as Upsilon2 Arae (υ2 Arae).[7]
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