HD 79498

HD 79498 is a primary of the star system located approximately 160 light years away in the constellation Cancer.[3] This G5 spectral class star has an apparent magnitude of 8.03 and is about the same size and mass as the Sun. It has a higher than solar abundance of elements other than hydrogen and helium; what astronomers term a metal-rich star.[2]

HD 79498
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cancer
Right ascension 09h 15m 09.4024s[1]
Declination +23° 22 31.9771[1]
Apparent magnitude (V) 8.03[2]
Characteristics
Spectral type G5[2]
Astrometry
Radial velocity (Rv)19.83 ± 0.23[3] km/s
Proper motion (μ) RA: −127.312±0.106[1] mas/yr
Dec.: −155.619±0.085[1] mas/yr
Parallax (π)20.4010 ± 0.0733[1] mas
Distance159.9 ± 0.6 ly
(49.0 ± 0.2 pc)
Details[2]
Mass1.06 M
Temperature5740 ± 100 K
Metallicity [Fe/H]0.24 ± 0.06 dex
Age2.7 Gyr
Other designations
BD+23° 2063, Gaia DR2 686996756484129664, HD 79498, HIP 45406, SAO 80717, 2MASS J09150941+2322323[3]
Database references
SIMBADdata

The secondary star of the star system is the BD+23 2063 B located on the projected separation of the 2900 AU from the primary.[4] It is a red dwarf of spectral class M0.[5]

Planetary system

The McDonald Observatory planet search program discovered planet orbiting primary in 2011 using radial velocity method.[4]

The HD 79498 planetary system[4]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥1.34 ± 0.07 MJ 3.13 ± 0.08 1966 ± 41 0.59 ± 0.02

See also

References

  1. 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.
  2. Schneider, Jean, "Planet HD 79498 b", The Extrasolar Planet Encyclopedia, Paris Observatory, retrieved 2012-08-22
  3. "HD 79498". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 August 2012.
  4. Robertson, Paul; et al. (April 2012), "The McDonald Observatory Planet Search: New Long-period Giant Planets and Two Interacting Jupiters in the HD 155358 System", The Astrophysical Journal, 749 (1): 39, arXiv:1202.0265, Bibcode:2012ApJ...749...39R, doi:10.1088/0004-637X/749/1/39, S2CID 59273311.
  5. "BD+23 2063B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 October 2012.

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