26 Canis Majoris

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26 Canis Majoris

A light curve for MM Canis Majoris from Hipparcos data, adapted from Aerts et al. (1999)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Canis Major
Right ascension 07h 12m 12.21483s[2]
Declination −25° 56′ 33.3107″[2]
Apparent magnitude (V) 5.89[3] or (5.84 – 5.87)[4]
Characteristics
Spectral type B2 IV/V[5]
B−V color index −0.170±0.004[6]
Variable type SPB[4]
Distance
1,010 ± 30 ly
(308 ± 8 pc)
Absolute magnitude (MV)−1.11[6]
Details
Myr
HR 2718, SAO 173193[10]
Database references
SIMBADdata

26 Canis Majoris is a

apparent visual magnitude of 5.89.[3] It is moving further from the Earth with a heliocentric radial velocity of +22 km/s.[6]

With a

subgiant star. Samus et al. (2017) classify it as a slowly pulsating B-type variable star (SPB), which ranges from magnitude 5.84 down to 5.87 with a rotationally-modulated period of 2.72945 days.[4] Briquet et al. (2007) describe it as a chemically peculiar He-variable star, having inhomogeneous distributions of chemical elements across its surface. It has a variable, quasi-dipolar magnetic field, resulting in variations of the magnetic field and line strengths as it rotates.[7]

This star is around 3.6

Sun's radius. The star is radiating 1,000[7] times as much luminosity as the Sun from its photosphere at an effective temperature of 16,157 K.[8]

References

  1. Bibcode:1999A&A...343..872A
    . Retrieved 15 November 2021.
  2. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  3. ^
    S2CID 96452769
    .
  4. ^
    S2CID 125853869
    .
  5. ^
    Bibcode:1988mcts.book.....H
    .
  6. ^
    S2CID 119257644
    .
  7. ^
    S2CID 18724568
    .
  8. ^
    S2CID 118532653
    .
  9. ^
    S2CID 118629873
    .
  10. ^ a b c "26 CMa". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved May 1, 2019.
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