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RU Cancer

RU Cancer ( lat. RU Cancri ) - a variable star , or a variable of type RS Hounds Dogs . It is located in the constellation Cancer . This is a yellow-white dwarf class F main sequence .

RU Cancer
Star
Observational data
( Age J2000.0)
Right ascension
Declination
Distance? St. years (? pc )
Visible magnitude ( V )10.20
ConstellationCrayfish
Astrometry
Radial velocity ( R v )12.0 km / s
Own movement (μ)RA: −22.25 mas per year
Dec: −2.41 mas per year
Parallax (π)3.02 ± 1.58 mas
Absolute magnitude (V)10.76
Specifications
Spectral classF9 V: +
VariabilityRS CVn
physical characteristics
Metallicity[M / H] =?
Other designations
RU Cancri, RU Cnc, AG + 23 959, BD + 24 1959, CABS 79, GSC 01942-01989, HIC 42303, HIP 42303
Database Information
SIMBAD

Content

Orbital Research

Oscillations of the orbital period of two systems of binary stars of the RS CVn type, - RU Cancer and AW Hercules, are given based on the analysis of the entire available minimum amount of light radiation. So it was found that the orbital period of RU Cancer shows two possible periods of oscillation with periods of 13.38 (± 0.23) and 37.6 (± 3.4) years. The corresponding oscillation amplitudes are about 0.0098 (± 0.0023) and 0.0119 (± 0.0017) days. For the Hercules AW star, it was found that the period shows cyclic changes with a periodicity of 12.79 (± 0.34) years and an amplitude of about 0.0327 (± 0.0063) days. Since the RU of Cancer and AW of Hercules are two stellar systems of the RS CVn type, cyclic oscillations of the period with a high probability can be caused by cycles of magnetic activity. [1] [2]

Notes

  1. ↑ YP Tian, ​​FY Xiang and X. Tao. Investigation of the orbital period of two binary stars // Astrophysics and Space Science. - Netherlands: Springer Netherlands, January 23, 2009 - T. 319 , No. 2-4 . - S. 119-124 . (English) (Retrieved July 7, 2009)
  2. ↑ Full text, graphs, and tables about research on the period of the star of the RU Cancer ( PDF ) (eng. )

See also

  • Cancer constellation star list

Links

  • SIMBAD Astronomical Database
  • VizieR Star Catalog
Source - https://ru.wikipedia.org/w/index.php?title=RU_Cancer&oldid=54953009


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Clever Geek | 2019