HD 86226

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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
CD–23°8866, HIP 48739, PPM 256971, SAO 178205
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]

The HD 86226 system[1]
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[edit]

References[edit]

  1. ^ a b 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)). 
  2. ^ "Constellations: Hydra 'the Sea Serpent'". h2g2. Retrieved 2010-02-10. [unreliable source?]
  3. ^ 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. 
  4. ^ "HD 86226". SIMBAD (Database query). Retrieved 2010-02-10. 
  5. ^ "Star : HD 86226". The Extrasolar Planets Encyclopaedia. Retrieved 2010-02-10. 

External links[edit]

Coordinates: Sky map 09h 56m 29.84s, −24° 05′ 57.8″