Planet HD 181720 b

Name HD 181720 b
Discovered in 2009
Mass 0.37 MJ
Semi-major axis 1.78 AU
Orbital period 956.0 (± 14.0) day
Eccentricity 0.26 (± 0.06)
ω 177.0 (± 12.0) deg
Tperi 2453631.0 (± 30.0) JD
Radius
Inclination 1.75 ( -1.65 +1.65 ) deg;
Update July 10, 2014
Detection Method Radial Velocity
Mass Detection Method
Radius Detection method
Molecules detected
Primary transit
Secondary transit
Anomaly angle
impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitute
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Observability Predictor

Remarks

11 Jan 2011: Reffert et al. 2011 give a mass range derived from astrometry 6.1 - 217.9 MJup at the 3 σ level.
The errors on inclination are at the 3 σ level (Reffert et al. 2011)

Star

Name HD 181720
Distance 56.0 (± 4.0) pc
Spectral type G1V
Apparent magnitude V 7.86
Mass 0.92 MSun
Age
Effective temperature 5781.0 (± 18.0) K
Radius
Metallicity [Fe/H] -0.53 (± 0.02)
Detected Disc
Magnetic Field
RA2000 19:22:53.0
Dec2000 -32:55:09
Alternate Names
Planetary system 1 planet

More data


Related publications

The Exoplanet Handbook
2011 Michael Perryman
Content
Content and Chapter 5

The HARPS search for southern extrasolar planets XXI. Three new giant planets orbiting the metal-poor stars HD5388, HD181720, and HD190984
2010 SANTOS N., MAYOR M., BENZ W., BOUCHY F., FIGUEIRA P., LO CURTO G., LOVIS Ch., MELO C., MOUTOU C., NAEF D., PEPE F., QUELOZ D., SOUSA S. & UDRY S.
Astron. & Astrophys., 512, A47
paper

Mass constraints on substellar companions candidates from the re-reduced Hipparcos intermediate astrometric data: Nine confirmed planets and two confirmed brown dwarfs
2011 REFFERT S. & QUIRRENBACH A.
Astron. & Astrophys., 527, A140
paper   arxiv