V429 Geminorum

BD+20° 1790

A light curve for V429 Geminorum, adapted from Norton et al. (2007)[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Gemini
Right ascension 07h 23m 43.58935s[2]
Declination +20° 24′ 58.6506″[2]
Apparent magnitude (V) 9.86 - 10.080[3]
Characteristics
Spectral type K5Ve[4]
Variable type BY Dra[3]
Astrometry
Radial velocity (Rv)7.56±0.28[2] km/s
Proper motion (μ) RA: −65.642 mas/yr[2]
Dec.: −230.692 mas/yr[2]
Parallax (π)36.0856 ± 0.0186 mas[2]
Distance90.38 ± 0.05 ly
(27.71 ± 0.01 pc)
Details
Mass0.63[5] M☉
Radius0.71[5] R☉
Luminosity0.17[5] L☉
Surface gravity (log g)4.53[5] cgs
Temperature4410[5] K
Metallicity0.30[5]
Rotation2.76±0.04 d[6]
Rotational velocity (v sin i)10.03[5] km/s
Age35-80[5][7] Myr
Other designations
V429 Gem, BD+20°1790, TYC 1355-214-1, USNO-B1.0 1104-00142035, 2MASS J07234358+2024588, 1SWASP J072343.59+202458.6
Database references
SIMBADdata
Exoplanet Archivedata

V429 Geminorum (BD+20°1790) is a young orange dwarf star in the constellation Gemini, located 90 light years away from the Sun. It is a BY Draconis variable, a cool dwarf which varies rapidly in brightness as it rotates.

  1. ^ Cite error: The named reference Norton2007 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  3. ^ a b Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  4. ^ Torres & Quast; Quast, G. R.; Melo, C. H. F.; Sterzik, M. F. (2008). "Young Nearby Loose Associations". Handbook of Star Forming Regions, Volume II: The Southern Sky ASP Monograph Publications. 5: 1–757. arXiv:0808.3362. Bibcode:2008hsf2.book..757T.
  5. ^ a b c d e f g h Cite error: The named reference hernan2009 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Carleo2018 was invoked but never defined (see the help page).
  7. ^ Carpenter; Bouwman, Jeroen; Mamajek, Eric E.; Meyer, Michael R.; Hillenbrand, Lynne A.; Backman, Dana E.; Henning, Thomas; Hines, Dean C.; et al. (2009). "Formation and Evolution of Planetary Systems: Properties of Debris Dust Around Solar-Type Stars". The Astrophysical Journal Supplement. 181 (1): 197–226. arXiv:0810.1003. Bibcode:2009ApJS..181..197C. doi:10.1088/0067-0049/181/1/197. S2CID 31456106.