HD 33875

HD 33875
Observation data
Epoch J2000      Equinox J2000
Constellation Mensa
Right ascension 05h 06m 09.2953s[1]
Declination −73° 02′ 15.6159″[1]
Apparent magnitude (V) 6.26 ± 0.01[2]
Characteristics
Spectral type A1 V[3] or A0 V[4]
U−B color index −0.01[5]
B−V color index +0.01[5]
Astrometry
Radial velocity (Rv)8 ± 7.4[6] km/s
Proper motion (μ) RA: +17.783[1] mas/yr
Dec.: +63.090[1] mas/yr
Parallax (π)7.742 ± 0.0276 mas[1]
Distance421 ± 2 ly
(129.2 ± 0.5 pc)
Absolute magnitude (MV)+0.7
Details
Mass2.31 ± 0.41[7] M☉
Radius2.84 ± 0.35[7] R☉
Luminosity49.2[8] L☉
Surface gravity (log g)4[9] cgs
Temperature9,392[10] K
Rotational velocity (v sin i)124 ± 6[10] km/s
Age411[11] Myr
Other designations
20 G. Mensae, CD−73°219, CPD−73°286, FK5 2388, GC 6313, HD 33875, HIP 23737, HR 1700, SAO 256160
Database references
SIMBADdata

HD 33875 (HR 1700) is a solitary star in the southern circumpolar constellation Mensa. With an apparent magnitude of 6.26,[2] it is barely visible to the naked eye under ideal conditions. The star is located at a distance of 421[1] light years but is receding at a rate of 8 km/s.[6]

HD 33875 is an ordinary A-type main-sequence star with a stellar classification of either A1 V[3] or A0 V[4] depending on the source. At present it has 2.38 times the mass of the Sun[7] and 2.84 times the radius of the Sun.[7] It shines at 49.2 times the Sun's luminosity[8] from its photosphere at an effective temperature of 9,392 K,[10] which gives it a white glow. HD 33875 is a fast rotator, spinning rapidly with a projected rotational velocity of 124 km/s.[10]

  1. ^ a b c d e f Cite error: The named reference GaiaEDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Tycho2000 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1975 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Buscombe1969 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Johnson1966 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Kharchenko2007 was invoked but never defined (see the help page).
  7. ^ a b c d Cite error: The named reference TICv7 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference McDonald2012 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Kordopatis2013 was invoked but never defined (see the help page).
  10. ^ a b c d Cite error: The named reference Ammler2012 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference DDR was invoked but never defined (see the help page).