NR Canis Majoris

Source: Wikipedia, the free encyclopedia.
NR Canis Majoris

A light curve for NR Canis Majoris, plotted from TESS data[1]
Observation data
J2000
Constellation Canis Major
Right ascension 07h 27m 07.99012s[2]
Declination −17° 51′ 53.5058″[2]
Apparent magnitude (V) 5.60[3] (5.66 + 9.23)[4]
Characteristics
Spectral type F2V[5]
B−V color index +0.314±0.002[3]
Variable type δ Sct[6]
Distance
297 ± 2 ly
(91.2 ± 0.8 pc)
Absolute magnitude (MV)0.78[3]
Details
A
Gyr
HR 2853, SAO 152894, ADS 6093, CCDM J07271-1752AB, WDS J07271-1752[10]
Database references
SIMBADdata

NR Canis Majoris is a

light years from the Sun based on parallax.[2] The system is drifting closer to the Sun with a radial velocity of −29 km/s,[3] and in about three million years it is predicted to approach within 14.1+4.7
−4.0 ly.[12] At that time, the star will become the brightest in the night sky, potentially reaching magnitude −0.88.[13]

The magnitude 5.66

projected rotational velocity of 185 km/s, which is giving the star an equatorial bulge that is estimated to be 8% larger than the polar radius.[9]

The secondary companion is magnitude 9.23 and lies at an

″ along a position angle of 39°, as of 2005.[4]

References

  1. ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
  2. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  3. ^
    S2CID 119257644
    .
  4. ^
    doi:10.1086/323920
    . Retrieved 2015-07-22.
  5. ^
    Bibcode:1988mcts.book.....H
    .
  6. ^
    S2CID 125853869
    .
  7. ^
    S2CID 33401607
    .
  8. S2CID 55586789
    .
  9. ^
    S2CID 119273474
    .
  10. ^ "NR CMa". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 12 February 2017.
  11. S2CID 14878976
    .
  12. S2CID 59039482
    . A35.
  13. Bibcode:1998S&T....95d..59T
    .
  14. ^ Watson, Christopher (4 January 2010). "LS Canis Majoris". AAVSO Website. American Association of Variable Star Observers. Retrieved 12 July 2014.
Retrieved from "https://en.wikipedia.org/w/index.php?title=NR_Canis_Majoris&oldid=1079514746"