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Nu2 Arae

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(Redirected from Upsilon2 Arae) Star in the constellation Ara For other stars with this Bayer designation, see Nu Arae.

Nu Arae
Observation data Epoch J2000.0 Equinox J2000.0
Location of ν Arae (circled)
Constellation	Ara
Right ascension	17 51 11.04526
Declination	–53° 07′ 48.9705″
Apparent magnitude (V)	6.10
Characteristics
Spectral type	B9.5 III-IV
B−V color index	+0.01
Astrometry

Radial velocity (R_v)	+18.8±1.2 km/s
Proper motion (μ)	RA: +14.855 mas/yr Dec.: +0.548 mas/yr
Parallax (π)	5.7499 ± 0.1048 mas
Distance	570 ± 10 ly (174 ± 3 pc)
Absolute magnitude (M_V)	+0.14

Details

Luminosity	85 `L`_☉

Other designations
ν Ara, CD−53° 7430, HD 161917, HIP 87379, HR 6632, SAO 245072
Database references
SIMBAD	data

Nu Arae, Latinized from ν 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. The stellar classification of B9.5 III-IV 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 Upsilon Arae (υ Arae).

References

^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C.
^ Houk, Nancy; Cowley, A. P. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 1, Ann Arbor: Dept. of Astronomy, University of Michigan, Bibcode:1975mcts.book.....H.
Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065, S2CID 119231169.
^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
"HR 6632 -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-07-14
Note for HR 6632

External links

Aladin previewer: Image of HD 161917

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Constellation of Ara

Bayer	α (Choo/Tchou) β γ δ ε ε ζ (Tseen Yin) η θ ι κ λ μ (Cervantes) ν (V539) ν π ρ ρ σ
Variable	R S OY V626 V821 V828 V829 V854 V862 V872
HR	6177 6187 6207 6236 6251 6253 6297 6300 6312 6323 6408 6416 (41 G.) 6423 6438 6477 6478 6483 6487 6513 6759
HD	152079 153201 154672 154857 156411 (Inquill)
Other	2MASS J18082002−5104378 CXOU J164710.2−455216 Gliese 674 Gliese 676 IRAS 16594-4656 SAO 244567 SGR 1627−41 Westerlund 1-20 Westerlund 1 W26 Westerlund 1-75 Westerlund 1-237 Westerlund 1-243 XTE J1650−500

Exoplanets	Gliese 674 b HD 154672 b HD 154857 b c HD 156411 b μ Arae b c d e

NGC	6193 6200 6204 6208 6250 6352 6362 6397
Other	ESO 280-SC06 IC 4651 Westerlund 1

NGC	6188 6326
Other	Stingray Nebula Water Lily Nebula

NGC	6215 6221 6300 6328

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