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HD 300933

HD 300933
Location of HD 300933 (circled)
Observation data
Epoch J2000[1]      Equinox J2000[1]
Constellation Vela
Right ascension 10h 38m 02.98879s
Declination −56° 49′ 01.9334″
Apparent magnitude (V) 8.29[2]
Characteristics
Evolutionary stage Red supergiant
Spectral type M2 Iab/Ib[3] + B2V[4]
B−V color index +1.70[2]
J−H color index +1.097[5]
J−K color index +1.500[5]
Astrometry
Radial velocity (Rv)−11.05±0.42[6] km/s
Proper motion (μ) RA: −7.461[1] mas/yr
Dec.: 3.539[1] mas/yr
Parallax (π)0.3216±0.0315 mas[1]
Distance3100[7] pc
Details
HD 300933
Radius806[8] R☉
Temperature3660±170[9] K
Other designations
CD−56°3464, CPD−56°3586, Gaia DR3 5352006438862476288, HD 300933/4, WDS J10380-5649AB, TIC 458199516, TYC 8609-2644-1, GSC 08609-02644, IRAS 10360-5633, 2MASS J10380298-5649019, WISE J103803.02-564901.9[10]
Database references
SIMBADdata

HD 300933 (CPD-56°3586) is a red supergiant of spectral type M2 Iab/Ib[3] in the southern constellation of Vela, close to the border with Carina. With an apparent magnitude of 8.29, it is too faint to be observed by the naked eye, but can be seen through binoculars. It is part of a binary system with a massive B-type main-sequence star (spectral type B2V) designated HD 300934.[4] It is located roughly 3,100 parsecs (10,000 light-years) away from the Solar System, but is approaching at a heliocentric radial velocity of −11.05±0.42 km/s.

  1. ^ a b c d Cite error: The named reference EDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference TYC2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference PantaleoniGonzalez2020 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Keenan1970 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference 2MASS was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference DR3 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Munari2021 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Healy2023 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Messineo2019 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
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