R Serpentis

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Template:Short description

R Serpentis
File:RSerLightCurve.png
The visual band light curve of R Serpentis, from AAVSO data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Serpens[2]
Right ascension Template:RA[3]
Declination Template:DEC[3]
Apparent magnitude (V) 5.2 - 14.4[4]
Characteristics
Evolutionary stage AGB[5]
Spectral type M5-8e[6]
B−V Template:Engvar Script error: No such module "val".[2]
Variable type Mira[4]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[7] km/s
Proper motion (μ) RA: +2.387[3] mas/yr
Dec.: −36.699[3] mas/yr
Parallax (π)3.5110±0.2966 mas[3]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Details
Mass3.6[8] Template:Solar mass
Radius79[9] Template:Solar radius
Luminosity758[9] Template:Solar luminosity
Surface gravity (log g)1.55[8] cgs
Temperature3,413[9] K
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[10]
Database references
SIMBADdata

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R Serpentis is a Mira variable type star in the equatorial constellation of Serpens. It ranges between apparent magnitude 5.16 and 14.4, and spectral types M5e to M8e, over a period of 356.41 days.[4][11] The variability of this star was discovered in 1826 by Karl Ludwig Harding.[12]

References

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Template:Stars of Serpens