Planet HD 20781 b

Detailed information about planet HD 20781 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HD 20781 b

Planet Status

Confirmed

Discovered in

2011

Update

2024-02-19

Mass

0.00607 (\pm 0.00123)

M_J

Mass*sin(i)

0.00607 (\pm 0.00123)

M_J 1 publication

The HARPS search for southern extra-solar planets. XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

Semi-Major Axis

0.0529 (\pm 0.0027)

AU 1 publication

The HARPS search for southern extra-solar planets. XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

Orbital Period

5.3135 (\pm 0.001)

day 1 publication

The HARPS search for southern extra-solar planets. XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

Eccentricity

0.1 (\begin{matrix} + 1.0 \\ - 0.07 \end{matrix})

1 publication

The HARPS search for southern extra-solar planets. XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

ω

84.0 (\begin{matrix} + 142.0 \\ - 108.0 \end{matrix})

deg 1 publication

The HARPS search for southern extra-solar planets. XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

T_peri

2455503.2027 (\begin{matrix} + 2.1 \\ - 1.5 \end{matrix})

JD 1 publication

The HARPS search for southern extra-solar planets. XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

Radius

—

Inclination

—

Detection Method

Radial Velocity

Mass Meas. Method

Radial Velocity

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

0.91 (\pm 0.15)

m/s 1 publication

The HARPS search for southern extra-solar planets. XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

—

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

No remarks

No link

Star

Name

HD 20781

Distance

35.4 (\pm 1.0)

Spectral type

G9.5V

Apparent magnitude V

8.44

Mass

—

Age

—

Effective temperature

—

Radius

—

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

03:20:03.0

Dec₂₀₀₀

-28:47:02.0

Alternate Names

—

No remarks

No link

Simbad
Most recent references (ADS)

Planet HD 20781 b

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 13 parameters

Planetary system 4 planets

Remarks No remark

Other web pages No page

More data 2 references

Planet HD 20781 b

Planet

Basic informations 28 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 13 parameters

Planetary system 4 planets

Remarks No remark

Other web pages No page

More data 2 references

Related publications

Gaia Search for (sub)stellar Companions of Exoplanet Hosts

The HARPS search for southern extra-solar planets. XLIV. Eight HARPS multi-planet systems hosting 20 super-Earth and Neptune-mass companions

The Spitzer search for the transits of HARPS low-mass planets - II. Null results for 19 planets

Dynamics of the 3/1 planetary mean-motion resonance. An application to the HD60532 b-c planetary system

Detailed Abundances of Planet-Hosting Wide Binaries. I. Did Planet Formation Imprint Chemical Signatures in the Atmospheres of HD 20782/81?

Resonant periodic orbits in the exoplanetary systems

A Uniformly Derived Catalogue of Exoplanets from Radial Velocities

The Exoplanet Handbook

The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets