V385 Andromedae

V385 Andromedae is a variable star in the constellation Andromeda, about 360 parsecs (1,200 ly) away. It is a red giant over a hundred times larger than the sun. It has an apparent magnitude around 6.4, just about visible to the naked eye in ideal conditions.

V385 Andromedae
Location of V385 Andromedae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
Right ascension  23h 24m 08.868s[1]
Declination +41° 36′ 46.35″[1]
Apparent magnitude (V) 6.413[2]
Characteristics
Evolutionary stage Red giant
Spectral type M0[3]
B−V color index +1.66[4]
Variable type LB[3][2]
Astrometry
Proper motion (μ) RA: -12.02 ± 0.31[1] mas/yr
Dec.: 2.46 ± 0.29[1] mas/yr
Parallax (π)2.7775 ± 0.1334[5] mas
Distance1,170 ± 60 ly
(360 ± 20 pc)
Details
Radius113[5] R☉
Luminosity1,843[5] L☉
Temperature3,563[5] K
Other designations
HD 220524, BD+40 5065, HIP 115530, SAO 52978
Database references
SIMBADdata

V385 Andromedae was identified as a long-period variable in 1999 from analysis of Hipparcos photometry.[6] It was classified as a slow irregular variable,[3] but analysis of its light curve identified a possible 36 day period.[2] It varies by about 0.1 magnitudes.[2][3]

References
  1. van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
  2. Burggraaff, O.; Talens, G. J. J.; Spronck, J.; Lesage, A. -L.; Stuik, R.; Otten, G. P. P. L.; Van Eylen, V.; Pollacco, D.; Snellen, I. A. G. (2018). "Studying bright variable stars with the Multi-site All-Sky CAmeRA (MASCARA)". Astronomy and Astrophysics. 617: A32. arXiv:1806.02247. Bibcode:2018A&A...617A..32B. doi:10.1051/0004-6361/201833142.
  3. 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: B/gcvs. Bibcode:2009yCat....102025S.
  4. Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27. Bibcode:2000A&A...355L..27H.
  5. 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.
  6. Kazarovets, E. V.; Samus, N. N.; Durlevich, O. V.; Frolov, M. S.; Antipin, S. V.; Kireeva, N. N.; Pastukhova, E. N. (1999). "The 74th Special Name-list of Variable Stars". Information Bulletin on Variable Stars. 4659 (4659): 1. Bibcode:1999IBVS.4659....1K.


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