W Canis Majoris

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W Canis Majoris

A visual band light curve for W Canis Majoris, plotted from All Sky Automated Survey data.[1]
Observation data
ICRS
)
Constellation Canis Major
Right ascension 07h 08m 03.43652s[2]
Declination −11° 55′ 23.7977″[2]
Apparent magnitude (V) 6.35–7.90[3]
Characteristics
Spectral type C6,3(N)[3]
B−V color index +2.55[4]
Variable type Lb[3][5]
Distance
1,800 ± 100 ly
(550 ± 40 pc)
Details
Radius251[8][a] R☉
Luminosity2,900[8] L☉
Surface gravity (log g)0.0[9] cgs
Temperature2,900[9][8] K
HD 54361, SAO
 152427
Database references
SIMBADdata

W Canis Majoris (W CMa) is a

milliarcseconds
implies a distance of about 555 parsecs.

W CMa is classified as a

helium-burning shell.[10]

Notes

  1. ^ Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:
    .

References

  1. ^ "ASAS All Star Catalogue". The All Sky Automated Survey. Retrieved 8 December 2021.
  2. ^
    S2CID 18759600
    .
  3. ^
    Bibcode:2009yCat....102025S
    .
  4. Bibcode:1998A&A...338..209A
    .
  5. ^
    Bibcode:2011JAVSO..39....1P
    .
  6. S2CID 119231169
    .
  7. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  8. ^ a b c d Siderud, Emelie (2020). Dust emission modelling of AGB stars.
  9. ^
    S2CID 43847096
    .
  10. S2CID 119462309
    .
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