Nu2 Lupi

ν2 Lupi
A star chart of the constellation of Lupus showing the position of ν2
Observation data
Epoch J2000      Equinox J2000
Constellation Lupus
Right ascension 15h 21m 48.14991s[1]
Declination −48° 19′ 03.4699″[1]
Apparent magnitude (V) 5.7821 ± 0.0006[2]
Characteristics
Evolutionary stage Main sequence
Spectral type G4V[3]
U−B color index 0.05[4]
B−V color index 0.639 ± 0.003[2]
Astrometry
Radial velocity (Rv)−68.78±0.12[1] km/s
Proper motion (μ) RA: −1623.275±0.061 mas/yr[1]
Dec.: −275.548±0.072 mas/yr[1]
Parallax (π)67.8467 ± 0.0601 mas[1]
Distance48.07 ± 0.04 ly
(14.74 ± 0.01 pc)
Absolute magnitude (MV)4.80[5]
Details
Mass0.876+0.026
−0.032[3] M☉
Radius1.054±0.014[3] R☉
Luminosity1.038 ± 0.059[6] L☉
Surface gravity (log g)4.39 ± 0.11[6] cgs
Temperature5664 ± 61[6] K
Metallicity [Fe/H]−0.34±0.04[3] dex
Rotation23.8 ± 3.1 days [6]
Rotational velocity (v sin i)2.0 ± 0.5[7] km/s
Age11.7+2.1
−2.3[3] Gyr
Other designations
ν2 Lup, CD−47° 9919, GJ 582, HD 136352, HIP 75181, HR 5699, SAO 225697, TOI-2011, TIC 136916387[3]
Database references
SIMBADdata

Nu2 Lupi (ν2 Lupi) is a 6th magnitude G-type main-sequence star located approximately 48 light-years away in the constellation of Lupus. The physical properties of the star are similar to those of the Sun, though Nu2 Lupi is significantly older.

  1. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
  3. ^ a b c d e f Cite error: The named reference Ehrenreich2023 was invoked but never defined (see the help page).
  4. ^ Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.
  5. ^ 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.
  6. ^ a b c d Cite error: The named reference DelrezEhrenreich2021 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Valenti2005 was invoked but never defined (see the help page).