HD 290327

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
HD 290327
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Right ascension 05h 23m 21.56s[1]
Declination –02° 16′ 39.4″[1]
Apparent magnitude (V) 8.96
Characteristics
Spectral type G5IV
Apparent magnitude (B) 9.69
Apparent magnitude (J) 7.683
Apparent magnitude (H) 7.404
Apparent magnitude (K) 7.271
B−V color index 0.73
Astrometry
Proper motion (μ) RA: 34.44±1.54[1] mas/yr
Dec.: −96.93±0.99[1] mas/yr
Parallax (π)17.65 ± 1.57[1] mas
Distance180 ± 20 ly
(57 ± 5 pc)
Absolute magnitude (MV)5.26
Details
Mass0.86 ± 0.01[2] M
Radius0.95 ± 0.02[2] R
Luminosity0.747 ± 0.004[2] L
Surface gravity (log g)4.41 ± 0.01[2] cgs
Temperature5525 ± 20[2] K
Metallicity [Fe/H]−0.11 dex
Age11.8 ± 1.2[2] Gyr
Other designations
BD−02°128, HIP 25191, PPM 175811, SAO 132049
Database references
SIMBADdata
Exoplanet Archivedata
Extrasolar Planets
Encyclopaedia
data

HD 290327 is a 9th magnitude G-type subgiant star located approximately 180 light years away in the constellation Orion. This star is larger, cooler, fainter, and less massive than our Sun. Also its metal content is seven-ninths as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.[3]

The HD 290327 planetary system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b 2.54+0.17
−0.14
 MJ
3.43+0.20
−0.12
2443+205
−117
0.08+0.08
−0.03

See also[edit]

References[edit]

  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ^ a b c d e f Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
  3. ^ a b Naef, D.; et al. (2010). "The HARPS search for southern extrasolar planets XXIII. 8 planetary companions to low-activity solar-type stars". Astronomy and Astrophysics. 523. A15. arXiv:1008.4600. Bibcode:2010A&A...523A..15N. doi:10.1051/0004-6361/200913616.

Coordinates: Sky map 05h 23m 21.5647s, −02° 16′ 39.428″