HD 86226
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Hydra |
| Right ascension | 09h 56m 29.84s |
| Declination | –24° 05′ 57.8″ |
| Apparent magnitude (V) | 7.932 |
| Characteristics | |
| Spectral type | G2V |
| Apparent magnitude (B) | 8.563 |
| Apparent magnitude (R) | 7.71 |
| Apparent magnitude (J) | 6.839 |
| Apparent magnitude (H) | 6.577 |
| Apparent magnitude (K) | 6.463 |
| B−V color index | 0.631 |
| V−R color index | 0.22 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +19.4 km/s |
| Proper motion (μ) | RA: –176.37 mas/yr Dec.: 46.72 mas/yr |
| Parallax (π) | 23.54 ± 0.85 mas |
| Distance | 139 ± 5 ly (42 ± 2 pc) |
| Absolute magnitude (MV) | 4.791 |
| Details | |
| Mass | 1.06 ± 0.03[1] M☉ |
| Radius | 1.02 ± 0.03 R☉ |
| Luminosity | 1.06 L☉ |
| Surface gravity (log g) | 4.36 ± 0.04 cgs |
| Temperature | 5903 ± 31 K |
| Metallicity | 0.05 ± 0.03 |
| Rotation | 23 ± 4 |
| Age | 1.5 ± 1.3 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 86226 is a G type yellowish white star found in the constellation of Hydra.
Due to the reactions it had when placed under a Doppler test, 13 Magellan Doppler Velocity observations were made of an object found near the star. The object had a Keplerian orbit, was declared an exoplanet and dubbed HD 86226 b.[2][3][4][5]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.92 ± .10 MJ | 2.49 ± 0.28 | 1695 ± 58 | 0.15 ± 0.09 | — | — |
See also
References
- 1 2 Marmier, M.; et al. (March 2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". Astronomy and Astrophysics 551. arXiv:1211.6444. Bibcode:2013A&A...551A..90M. doi:10.1051/0004-6361/201219639. (subscription required (help)).
- ↑ "Constellations: Hydra 'the Sea Serpent'". h2g2. Retrieved 2010-02-10.
- ↑ Arriagada, Pamela; et al. (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". The Astrophysical Journal 711 (2). arXiv:1001.4093. Bibcode:2010ApJ...711.1229A. doi:10.1088/0004-637X/711/2/1229.
- ↑ "HD 86226". SIMBAD (Database query). Retrieved 2010-02-10.
- ↑ "Star : HD 86226". The Extrasolar Planets Encyclopaedia. Retrieved 2010-02-10.
External links
- "HD 86226". SAO/NASA Astrophysics Data System (ADS) (Database query).
Coordinates: 
09h 56m 29.84s, −24° 05′ 57.8″
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