HD 290327

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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
Distance 180 ± 20 ly
(57 ± 5 pc)
Absolute magnitude (MV) 5.26
Details
Mass 0.84 M
Radius 1.02±0.13 R
Luminosity 0.734±0.134 L
Surface gravity (log g) 4.24 cgs
Temperature 5310±100 K
Metallicity -0.11
Other designations
BD–02°128, HIP 25191, PPM 175811, SAO 132049
Database references
SIMBAD data
Exoplanet Archive data
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.[2]

The HD 290327 planetary system[2]
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]

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