V Crucis

V Crucis

The visual band light curve of V Crucis, from AAVSO data[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Crux
Right ascension 12h 56m 35.559s[2]
Declination −57° 53′ 57.02″[2]
Apparent magnitude (V) 8.74 - 11.13[3]
Characteristics
Spectral type Ce(Ne)[4]
Variable type Mira[4]
Astrometry
Radial velocity (Rv)−19.90[5] km/s
Proper motion (μ) RA: 0.507[2] mas/yr
Dec.: 1.989[2] mas/yr
Parallax (π)0.7451 ± 0.0475 mas[2]
Distance4,400 ± 300 ly
(1,340 ± 90 pc)
Absolute magnitude (MV)-4.67[6]
Details
Radius130[2] R☉
Luminosity7,244[7] L☉
Temperature3,075[7] K
Other designations
V Cru, CD−57°4791, HD 112319, HIP 63175, IRAS 12536-5737, 2MASS J12563556-5753569[8]
Database references
SIMBADdata

V Crucis is a carbon star in the constellation Crux. A Mira variable, its apparent magnitude ranges from 8.7 to 11.1 over 376.5 days.[4] The fact that this star's period is nearly equal to one year makes it hard to get good observational coverage over the entire cycle. Its near-infrared light curve shows a contribution from the first harmonic of the fundamental period.[9]

  1. ^ Cite error: The named reference aavso was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference dr2 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference asas was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference AAVSOS was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference pulkovo was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference guandalini2013 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference bergeat2002 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Whitelock was invoked but never defined (see the help page).