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RY Andromedae

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RY Andromedae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Andromeda
Right ascension  23h 20m 37.3s[1]
Declination 39° 37′ 11″[1]
Apparent magnitude (V) 10.0 to 15.3[2]
Spectral type M8[2]
Proper motion (μ) RA: −7.636±0.188[1] mas/yr
Dec.: −2.567±0.190[1] mas/yr
Parallax (π)2.0487 ± 0.1263[1] mas
Distance1,590 ± 100 ly
(490 ± 30 pc)
Other designations
RY And, 2MASS J23203758+3937140[3]
Database references

RY Andromedae is a variable star in the constellation of Andromeda. It is classified as a Mira variable, and varies from an apparent visual magnitude of 15.3 at minimum brightness to a magnitude of 10.0 at maximum brightness, with a period of approximately 391.2 days.[2]


  1. 1.0 1.1 1.2 1.3 1.4 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.
  2. 2.0 2.1 2.2 RY And, database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al., CDS ID II/250 Accessed on line 2009-06-30.
  3. "RY Andromedae". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-10-18.

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