V763 Centauri

This article is about C1 Centauri. For c1 Centauri, see HD 129456. For other stars with this Bayer designation, see C Centauri.
C1 Centauri

A light curve for V763 Centauri, plotted from Hipparcos data[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Centaurus
Right ascension 11h 35m 13.28134s[2]
Declination −47° 22′ 21.2888″[2]
Apparent magnitude (V) +5.64[3]
Characteristics
Evolutionary stage AGB[4]
Spectral type M3/4III[5]
B−V color index +1.682±0.019[3]
Variable type Lb[6]
Astrometry
Radial velocity (Rv)+21.07±0.29[2] km/s
Proper motion (μ) RA: -87.503[2] mas/yr
Dec.: -6.988[2] mas/yr
Parallax (π)5.4236 ± 0.1476 mas[2]
Distance600 ± 20 ly
(184 ± 5 pc)
Absolute magnitude (MV)−1.05[3]
Details
Radius64.7+5.9
−4.3[2] R☉
Luminosity754±24[2] L☉
Temperature3,761+130
−161[2] K
Other designations
C1 Cen, V763 Centauri, CD−46°7199, GC 15886, HD 100733, HIP 56518, HR 4463, SAO 222887, CCDM J11352-4722[7]
Database references
SIMBADdata

C1 Centauri is a single[8] star in the southern constellation of Centaurus. It has the variable star designation V763 Centauri, while C1 Centauri is the Bayer designation. The star has a red hue and is dimly visibly to the naked eye with an apparent visual magnitude that fluctuates around +5.64.[3] It is located at a distance of approximately 600 light years based on parallax, and has an absolute magnitude of −1.05.[3] It is drifting further away with a radial velocity of +21 km/s.[2] At one time it was a candidate member of the Zeta Herculis Moving Group but has since been excluded.[9]

This object is an aging red giant star on the asymptotic giant branch[4] with a stellar classification of M3/4III.[5] Samus et al. (2017) classify this as a slow irregular variable of sub-type Lb and its brightness varies from magnitude +5.52 down to +5.82.[6] It was previously classified as a semiregular variable of sub-type SRb.[10] With the supply of hydrogen and helium at its core exhausted, the star has expanded until now it has 65 times the radius of the Sun. It is radiating 754 times the luminosity of the Sun from its photosphere at an effective temperature of 3,761 K.[2]

  1. ^ Cite error: The named reference HipDataAccess was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i j k Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Eggen1992 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference houk1978 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Samus2017 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Eggen1971 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Kerschbaum1994 was invoked but never defined (see the help page).