HD 89307

Last updated
HD 89307
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Leo [1]
Right ascension 10h 18m 21.28771s [2]
Declination +12° 37′ 15.9909″ [2]
Apparent magnitude  (V)7.02 [1]
Characteristics
Evolutionary stage main sequence [2]
Spectral type G0V [3]
B−V color index 0.594±0.003 [1]
Astrometry
Radial velocity (Rv)+23.27±0.13 [2] km/s
Proper motion (μ)RA: −272.659 mas/yr [2]
Dec.: −39.333 mas/yr [2]
Parallax (π)31.4134±0.0226  mas [2]
Distance 103.83 ± 0.07  ly
(31.83 ± 0.02  pc)
Absolute magnitude  (MV)4.57 [4]
Details [4]
Mass 1.028±0.04  M☉
Radius 1.08+0.01
−0.02 [5]   R☉
Luminosity 1.354±0.003 [5]   L☉
Surface gravity (log g)4.414±0.10  cgs
Temperature 5,950±44  K
Metallicity [Fe/H]−0.15±0.02 [1]   dex
Rotation 23.7 d
Rotational velocity (v sin i)3.21±0.50 km/s
Age 5.3+2.7
−2.9 Gyr [1]
6.76 [4]   Gyr
Other designations
BD+13 2237, GC 14140, HD 1835, HIP 50473, SAO 99049, PPM 127289 [6]
Database references
SIMBAD data

HD 89307 is a star in the equatorial constellation of Leo. It is too faint to be viewed with the naked eye except under ideal conditions, having an apparent visual magnitude of 7.02. [1] The star is located at a distance of 104 light-years (32 parsecs ) from the Sun based on parallax, and is drifting further away with a radial velocity of +23 km/s. [2]

Contents

This is an ordinary G-type main-sequence star with a stellar classification of G0V. [3] It is chromospherically inactive and appears older than the Sun with a rotation period of 23.7 days. [4] The star has about the same mass [4] as the Sun and is 8% larger. It is radiating 1.35 [5] times the Sun's luminosity from its photosphere at an effective temperature of 5,950 K. [4]

Planetary system

In December 2004, using the radial velocity method, it was found to have a long-period giant planet in orbit around it. [4] The parameters of HD 89307 b were updated in 2012, [7] and in 2023 its inclination and true mass were determined via astrometry. [8]

The HD 89307 planetary system [8]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(years)		 Eccentricity Inclination Radius
b 2.02+0.27
−0.15  MJ 		3.331+0.052
−0.053		5.991+0.081
−0.078		0.174+0.041
−0.043		72+13
−15 or 108+15
−13 ° 		—

See also

References

  1. 1 2 3 4 5 6 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR .
  2. 1 2 3 4 5 6 7 8 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR .
  3. 1 2 Harlan, E. A. (September 1969). "MK classifications for F- and G-type stars. I". Astronomical Journal. 74: 916–919. Bibcode:1969AJ.....74..916H. doi:10.1086/110881.
  4. 1 2 3 4 5 6 7 Fischer, Debra; et al. (2009). "Five planets and an independent confirmation of HD 196885 Ab from Lick Observatory". The Astrophysical Journal. 703 (2): 1545–1556. arXiv: 0908.1596 . Bibcode:2009ApJ...703.1545F. doi:10.1088/0004-637X/703/2/1545. S2CID   15524804.
  5. 1 2 3 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR .
  6. ↑ "9 Cet". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2021-03-27.
  7. ↑ Boisse, Isabelle; Pepe, Francesco; Perrier, Christian; Queloz, Didier; Bonfils, Xavier; Bouchy, François; Santos, Nuno C.; Arnold, Luc; Beuzit, Jean-Luc; Dìaz, Rodrigo F.; Delfosse, Xavier; Eggenberger, Anne; Ehrenreich, David; Forveille, Thierry; Hébrard, Guillaume; Lagrange, Anne-Marie; Lovis, Christophe; Mayor, Michel; Moutou, Claire; Naef, Dominique; Santerne, Alexandre; Ségransan, Damien; Sivan, Jean-Pierre; Udry, Stéphane (2012), "The SOPHIE search for northern extrasolar planets V. Follow-up of ELODIE candidates: Jupiter-analogs around Sun-like stars", Astronomy and Astrophysics, 545: A55, arXiv: 1205.5835 , Bibcode:2012A&A...545A..55B, doi:10.1051/0004-6361/201118419, S2CID   119109836
  8. 1 2 Xiao, Guang-Yao; Liu, Yu-Juan; et al. (March 2023). "The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements". Research in Astronomy and Astrophysics . 23 (5). arXiv: 2303.12409 . Bibcode:2023RAA....23e5022X. doi:10.1088/1674-4527/accb7e.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.