HD 93385

HD 93385
Observation data
Epoch J2000      Equinox J2000
Constellation Vela
Right ascension 10h 46m 15.116s[1]
Declination –41° 27′ 51.73″[1]
Apparent magnitude (V) 7.486[2]
Characteristics
Spectral type G2/G3 V[3]
B−V color index 0.595[4]
Astrometry
Radial velocity (Rv)+47.80±0.61[5] km/s
Proper motion (μ) RA: −48.135 mas/yr[1]
Dec.: −54.551 mas/yr[1]
Parallax (π)23.1489 ± 0.018 mas[1]
Distance140.9 ± 0.1 ly
(43.20 ± 0.03 pc)
Details
Mass1.07[4] M☉
Radius1.17[6] R☉
Luminosity1.42[6] L☉
Surface gravity (log g)4.08±0.11[6] cgs
Temperature5,823±35[6] K
Metallicity [Fe/H]–0.05±0.03[6] dex
Age4.13[4] Gyr
Other designations
CD–40 6283, HD 93385, HIP 52676, SAO 222310[7]
Database references
SIMBADdata

HD 93385 is a star in the southern constellation of Vela. At an apparent visual magnitude of 7.5,[2] it is too faint to be seen with the unaided eye. Parallax measurements made using the Gaia spacecraft show an annual shift of 23.15 mas. This is equivalent to a physical separation of around 141[1] light years from the Sun. It is drifting further away with a radial velocity of +47.8 km/s.

This is an ordinary G-type main sequence star with a stellar classification of G2/G3 V.[3] The physical properties of HD 93385 are similar to those of the Sun; it is slightly larger with 107%[4] of the Sun's mass, 117% of the radius, and 142% of the luminosity. The abundance of elements, other than hydrogen and helium, is nearly the same as in the Sun.[6] It is currently at an unusual low level of surface activity and thus is a candidate Maunder minimum analog.[4]

A physical companion star with an apparent visual magnitude of 12.29 is located at an angular separation of 10.32 arcseconds (equivalent to projected separation of 448 AU) along a position angle of 288°. It is estimated to have 45% of the mass of the Sun.[8] A 2015 survey ruled out the existence of any additional stellar companions at projected distances from 12 to 352 astronomical units.[9]

  1. ^ a b c d e Cite error: The named reference GaiaEDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference AAA355_L27 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1979 was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference MPB32_2_27 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference ApJ159_1_141 was invoked but never defined (see the help page).
  6. ^ a b c d e f Cite error: The named reference ApJ720_2_1290 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).
  8. ^ Cite error: The named reference AJ141_2_52 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Mugrauer_Ginski_2015 was invoked but never defined (see the help page).