From Wikipedia, the free encyclopedia
R Virginis

The visual band light curve of R Virginis, from AAVSO data [1]
Observation data
Epoch J2000       Equinox J2000
Constellation Virgo
Right ascension 12h 38m 29.9338s [2]
Declination +06° 59′ 19.0256″ [2]
Apparent magnitude (V) 6.1 - 12.1 [3]
Characteristics
Spectral type M3.5-7e [4]
U−B color index 1.22 [5]
B−V color index 1.56 [5]
Variable type Mira [3]
Astrometry
Radial velocity (Rv)−26.60 [6] km/s
Proper motion (μ) RA: −32.283±0.248 [2]  mas/ yr
Dec.: 4.483±0.186 [2]  mas/ yr
Parallax (π)1.8884 ± 0.0946  mas [2]
Distance1,730 ± 90  ly
(530 ± 30  pc)
Details
Radius88 [2]  R☉
Luminosity839 [2]  L☉
Temperature3,320 [2]  K
Other designations
R Virginis, TYC 295-2-1, AG+07° 1658, HD 109914, BD+07°2561, DO 3264, HIP 61667, GC 17212, HR 4808, RAFGL 4157, SAO 119509
Database references
SIMBAD data

R Virginis is a Mira variable in the constellation Virgo. Located approximately 530 parsecs (1,700 ly) distant, it varies between magnitudes 6.1 and 12.1 over a period of approximately 146 days. [3] Its variable nature was discovered by Karl Ludwig Harding in 1809. [7]

References

  1. ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. ^ a b c d e f g h 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.
  3. ^ a b c VSX (4 January 2010). "R Virginis". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 May 2014.
  4. ^ Keenan, Philip C.; Garrison, Robert F.; Deutsch, Armin J. (1974). "Revised Catalog of Spectra of Mira Variables of Types ME and Se". The Astrophysical Journal Supplement Series. 28: 271. Bibcode: 1974ApJS...28..271K. doi: 10.1086/190318.
  5. ^ a b Ducati, J. R. (2002). "VizieR On-line Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". VizieR On-line Data Catalog. Bibcode: 2002yCat.2237....0D.
  6. ^ Gontcharov, G. A. (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.
  7. ^ Zsoldos, E. (1994). "Three Early Variable Star Catalogues". Journal for the History of Astronomy. 25 (2): 92–98. Bibcode: 1994JHA....25...92Z. doi: 10.1177/002182869402500202. S2CID  117099222.


Stub icon

This variable star–related article is a stub. You can help Wikipedia by expanding it.

Retrieved from " https://en.wikipedia.org/?title=R_Virginis&oldid=1170148226"