Astronomy:HD 104067
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Corvus |
| Right ascension | 11h 59m 10.00867s[1] |
| Declination | −20° 21′ 13.6101″[1] |
| Apparent magnitude (V) | 7.92[2] |
| Characteristics | |
| Spectral type | K3V[3] |
| Apparent magnitude (B) | 8.894[2] |
| Apparent magnitude (J) | 6.212±0.019[2] |
| Apparent magnitude (H) | 5.754±0.023[2] |
| Apparent magnitude (K) | 5.614±0.024[2] |
| B−V color index | 0.974±0.010[2] |
| Astrometry | |
| Radial velocity (Rv) | +14.87±0.12[1] km/s |
| Proper motion (μ) | RA: 141.869[1] mas/yr Dec.: −423.911[1] mas/yr |
| Parallax (π) | 49.0793 ± 0.0586[1] mas |
| Distance | 66.45 ± 0.08 ly (20.38 ± 0.02 pc) |
| Absolute magnitude (MV) | 6.30[2] |
| Details[4] | |
| Mass | 0.818+0.024 −0.025 M☉ |
| Radius | 0.771+0.007 −0.006 R☉ |
| Luminosity | 0.307[1] L☉ |
| Surface gravity (log g) | 4.377±0.917 cgs |
| Temperature | 4,942±14 K |
| Metallicity [Fe/H] | −0.010±0.098 dex |
| Rotation | 29.8±3.1 d[3] |
| Rotational velocity (v sin i) | 2.47±0.96 km/s |
| Age | 4.8+3.3 −3.0 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 104067 is a star with a planetary companion in the southern constellation of Corvus. It has an apparent visual magnitude of 7.92[2] which is too faint to be visible with the naked eye. The distance to this star is 66 light years based on parallax. It is drifting further away with a radial velocity of +15 km/s.[1]
This is an ordinary K-type main-sequence star with a stellar classification of K3V.[3] It is a moderately active star[6] with an age of roughly five billion years. HD 104067 is spinning with a projected rotational velocity of 2.5 km/s,[4] giving it a rotation period of approximately a month.[3] The star has 82% of the mass and 77% of the radius of the Sun.[4] It is radiating 31%[1] of the Sun's luminosity from its photosphere at an effective temperature of 4,942 K. The metal content of this star is close to that in the Sun.[4]
Planetary system
HD 104067 has been observed as part of the HARPS planet finding survey since 2004. The detection of an exoplanetary companion using the radial velocity method was announced in 2011. This Neptune-like planet, HD 104067 b, has at least 0.16 times the mass of Jupiter and takes 55.8 days to orbit the star at a distance of 0.26 astronomical unit|AU.[6]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.186±0.014 MJ | 0.2643±0.0045 | 55.806±0.049 | 0 | — | — |
See also
- List of extrasolar planets
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 3.2 3.3 Suárez Mascareño, A. et al. (September 2015). "Rotation periods of late-type dwarf stars from time series high-resolution spectroscopy of chromospheric indicators". Monthly Notices of the Royal Astronomical Society 452 (3): 2745–2756. doi:10.1093/mnras/stv1441. Bibcode: 2015MNRAS.452.2745S.
- ↑ 4.0 4.1 4.2 4.3 Soto, M. G.; Jenkins, J. S. (2018). "Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue". Astronomy and Astrophysics 615: A76. doi:10.1051/0004-6361/201731533. Bibcode: 2018A&A...615A..76S.
- ↑ "HD 104067". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+104067.
- ↑ 6.0 6.1 6.2 Ségransan, D. et al. (2011). "The HARPS search for southern extra-solar planets. XXIX. Four new planets in orbit around the moderately active dwarfs HD 63765, HD 104067, HD 125595, and HIP 70849". Astronomy and Astrophysics 535: A54. doi:10.1051/0004-6361/200913580. Bibcode: 2011A&A...535A..54S. http://www.aanda.org/articles/aa/full_html/2011/11/aa13580-09/aa13580-09.html.
Coordinates: 
11h 59m 10.0100s, −20° 21′ 13.609″
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