Planet HD 176051 Bb

Detailed information about planet HD 176051 Bb and its parameters.

Planet

Name
HD 176051 Bb
Planet Status
Confirmed
Discovered in
2010
Update
2024-08-02
Mass
Mass*sin(i)
Semi-Major Axis
1.76 AU
Orbital Period
Eccentricity
ω
Tperi
Radius
Inclination
Detection Method
Astrometry
Mass Meas. Method
Radius Meas. Method
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names
HR 7162 Bb, GJ 738 Bb
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

22 Oct 2010: The parent star is a binary star. The planet parameters are given for the 0.71 Solar mass B component (Muterspaugh et al. 2010).
If the planet is orbiting the 1.07 Solar mass A component, the planet mass is 2.26 MJup and a = 2.02 AU. Currently the hypothesis of the secondary star as exoplanet host is favoured.

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Star

Name
HD 176051 B
Distance
Spectral type
K1V
Apparent magnitude V
5.22
Mass
Age
Effective temperature
Radius
Metallicity [Fe/H]
Detected Disc
IR Excess
Magnetic Field
RA2000
18:57:02.0
Dec2000
+32:54:05.0
Alternate Names
HR 7162 B, GJ 738 B, BU 648 B

22 Oct 2010: The parent star is part of a binary system very similar to α Centauri (P = 22430 d, a = 19 AUs, e = 0.266, i = 114.16°).
Muterspaugh et al. (2010) are not certain about which component the planet b, detected by astrometry, is orbiting, although the secondary star is more favoured as host.
The two components are:
- HD 176051A (1.07 Solar mass F9V star, V = 5.28) alias GJ 738 A
- HD 176051B (0.71 Solar mass K1V star, V = 7.82), alias GJ 738 B
We therefore take the (rather artificially) mean value (MA + MB)/2 for the stellar mass.

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