R Reticuli

R Reticuli

The visual band light curve of R Reticui, from AAVSO data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Reticulum
Right ascension 04h 33m 32.83070s[2]
Declination −63° 01′ 44.9951″[2]
Apparent magnitude (V) 9.23[3] (6.35 – 14.2)[4]
Characteristics
Evolutionary stage AGB[5]
Spectral type M4e - M7.5e[6]
B−V color index 1.099±0.045[3]
Variable type Mira[6]
Astrometry
Radial velocity (Rv)26.0±4.6[3] km/s
Proper motion (μ) RA: +12.111[2] mas/yr
Dec.: +16.384[2] mas/yr
Parallax (π)1.3622 ± 0.0492 mas[2]
Distance2,390 ± 90 ly
(730 ± 30 pc)
Details
Mass0.88+0.04
−0[7] M☉
Radius249+21
−34[8] R☉
Luminosity7,571±1,671[8] L☉
Surface gravity (log g)−0.445[7] cgs
Temperature3,410+264
−131[8] K
Metallicity [Fe/H]0.55[7] dex
Other designations
R Ret, S Ret, HD 29383, HIP 21252, SAO 249053[9]
Database references
SIMBADdata

R Reticuli, also listed under the duplicate variable star designation S Reticuli,[4] is a Mira variable star in the southern constellation Reticulum. It is an aging red giant star on the asymptotic giant branch[5] with a stellar classification that varies between M4e to M7.5e,[6] being hottest near maximum visual magnitude.[10] The brightness of the star varies between apparent visual magnitudes 6.35 and 14.2[4] with an average period of 281.08±0.58 d.[11] The mean maximum magnitude is 7.57 and the mean minimum magnitude 13.80.[11]

  1. ^ Cite error: The named reference aavso 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 c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference AAVSO was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Whitelock2008 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference starhorse was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference skiff2014 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Vogt2016 was invoked but never defined (see the help page).