HD 103774

HD 103774
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Corvus
Right ascension 11h 56m 56s
Declination −12° 6 28
Apparent magnitude (V) 7.12 ± 0.01
Characteristics
Spectral type F5V
Astrometry
Parallax (π)18.03± 0.52 mas
Distance181 ly
(55 ± 2 pc)
Details
Mass1.335 ± 0.03 M
Radius? R
Luminosity3.5± 0.3 L
Surface gravity (log g)4.26 ± 0.13 cgs
Temperature6489 ± 77 K
Metallicity0.28 ± 0.06
Age1.05 ± 0.64 × 109 years
Other designations
HIP 58263
Database references
SIMBADdata
Exoplanet Archivedata
Extrasolar Planets
Encyclopaedia
data

HD 103774 is a young white main-sequence star.

Planetary system

From 2003 to 2012, the star was under observance from HARPS.

In 2012, a hot Saturn-mass[1] planet was deduced by radial velocity. This was published in January 2013.

Also probable is a dust field, with grains of 12 micrometres.

The HD 103774 planetary system[2][3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >0.367 ± 0.022 MJ 0.07 ± 0.001 5.8881 ± 0.0005 0.09 ± 0.04

References

  1. The preprint listed this as "roughly the mass of Neptune" but it is much more massive than that.
  2. "hd_103774_b".
  3. G. Lo Curto et al. (2013). "The HARPS search for southern extrasolar planets: XXXVI. New multi-planet systems in the HARPS volume limited sample: a super-Earth and a Neptune in the habitable zone". arXiv:1301.2741. Bibcode:2013arXiv1301.2741L.