HD 48099

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HD 48099
Observation data
Epoch J2000      Equinox J2000
Constellation Monoceros
Right ascension 06h 41m 59.2309s
Declination +06° 20′ 43.529″
Characteristics
Spectral type O5.5V((f)) + O9V[1]
U−B color index -0.9
B−V color index -0.063
Astrometry
Radial velocity (Rv) +1.30 km/s
Proper motion (μ) RA: 0.84 mas/yr
Dec.: 2.55 mas/yr
Parallax (π) 1.17 ± 0.41 mas
Distance 1829[2] pc
Details
Mass 55 + 19[1] M
Radius 11.6 + 6.5[1] R
Luminosity 450,000 + 40,000[1] L
Surface gravity (log g) 4.5 + 3.5[1] cgs
Temperature 44,000 + 32,000[1] K
Other designations
HR 2467, HD 48099HIP 32067, SAO 114293
Database references
SIMBAD data

HD 48099 is a spectroscopic binary in the constellation Monoceros where both components are massive and luminous O stars.

Binary stars offer the opportunity to directly measure the mass of each component, but in the case the orbital inclination is very low and the masses cannot be accurately determined.

See also[edit]

References[edit]

  1. ^ a b c d e f Mahy, L.; Rauw, G.; Martins, F.; Nazé, Y.; Gosset, E.; De Becker, M.; Sana, H.; Eenens, P. (2010). "A New Investigation of the Binary Hd 48099". The Astrophysical Journal 708 (2): 1537. doi:10.1088/0004-637X/708/2/1537.  edit
  2. ^ Brown, D.; Bomans, D. J. (2005). "To see or not to see a bow shock". Astronomy and Astrophysics 439: 183. doi:10.1051/0004-6361:20041054.  edit