HD 33283

HD 33283
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lepus
Right ascension 05h 08m 01.0123s[1]
Declination −26° 47′ 50.8941″[1]
Apparent magnitude (V) 8.05[2]
Characteristics
Spectral type G3/5V[2] + M4–5[3]
B−V color index 0.641±0.009[2]
Astrometry
Radial velocity (Rv)+4.51±0.19[2] km/s
Proper motion (μ) RA: 56.184[1] mas/yr
Dec.: −46.058[1] mas/yr
Parallax (π)11.0993 ± 0.0286 mas[1]
Distance293.9 ± 0.8 ly
(90.1 ± 0.2 pc)
Absolute magnitude (MV)3.19[2]
Details
HD 33283
Mass1.39±0.04 M☉[4]
1.24±0.1[5] M☉
Radius1.95±0.04 R☉[4]
1.20±0.1[5] R☉
Luminosity4.37±0.02[4] L☉
Surface gravity (log g)3.99±0.03[4] cgs
Temperature5,985±57[4] K
Metallicity [Fe/H]0.35±0.08[2] dex
Rotational velocity (v sin i)1.09±0.26[6] km/s
Age3.6±0.6[4] Gyr
HD 33283 B
Mass0.17[3] M☉
Other designations
CD–26°2029, FK5 4470, Gaia DR2 2955981936912654592, GC 6286, HD 33283, HIP 23889, SAO 170100, PPM 75021, 2MASS J05080100-2647509[7]
Database references
SIMBADdata

HD 33283 is a star in the southern constellation Lepus with one planet and a co-moving stellar companion.[3] With an apparent visual magnitude of 8.05,[2] the star is too faint to be seen with the naked eye. It is located at a distance of 294 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +4.5.[2]

This is an ordinary G-type main-sequence star with a stellar classification of G3/5V.[2] It is about 3.6 billion years old and is chromospherically inactive. The star is spinning slowly with a projected rotational velocity of 1 km/s[6] and an estimated rotation period of about 55.5 days.[5] It is larger and more massive than the Sun. HD 33283 is radiating over four times the luminosity of the Sun from its photosphere at an effective temperature of 5,985 K.[4]

In 2014, a co-moving red dwarf companion star, HD 33283 B, of spectral class M4–M5 was detected at an angular separation of 55.7″, corresponding to a projected separation of 5,244 AU.[3]

  1. ^ a b c d e Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
  2. ^ a b c d e f g h i Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference Mugrauer_et_al_2014 was invoked but never defined (see the help page).
  4. ^ a b c d e f g Cite error: The named reference Bonfanti2015 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Johnson2006 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference jofre was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).