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]
| 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 |
| Distance | 159.9 ± 0.6 ly (49.0 ± 0.2 pc) |
| Details[2] | |
| Mass | 1.06 M☉ |
| Temperature | 5740 ± 100 K |
| Metallicity [Fe/H] | 0.24 ± 0.06 dex |
| Age | 2.7 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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]
| 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
- 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.
- Schneider, Jean, "Planet HD 79498 b", The Extrasolar Planet Encyclopedia, Paris Observatory, retrieved 2012-08-22
- "HD 79498". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 August 2012.
- 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.
- "BD+23 2063B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 26 October 2012.
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