Planet gamma 1 Leo b

Detailed information about planet gamma 1 Leo b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

gamma 1 Leo b

Planet Status

Confirmed

Discovered in

2009

Publication Status

Published in a refereed paper

Update

2015-09-14

Mass

63.88 (\begin{matrix} + 72.91 \\ - 56.1 \end{matrix})

M_J

Mass*sin(i)

8.78 (\begin{matrix} + 1.0 \\ - 1.0 \end{matrix})

M_J 1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Semi-Major Axis

1.19 (\pm 0.02)

AU 1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Orbital Period

428.5 (\pm 1.25)

day 1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Eccentricity

0.144 (\pm 0.046)

1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Angular distance

0.030909

arcsec

ω

206.7 (\pm 9.2)

deg 1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

T_peri

2451236.0 (\pm 13.5)

JD 1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Radius

—

Inclination

172.1 (\begin{matrix} + 3.8 \\ - 98.6 \end{matrix})

deg 1 publication

Mass constraints on substellar companions candidates from the re-reduced Hipparcos intermediate astrometric data: Nine confirmed planets and two confirmed brown dwarfs

Detection Method

Radial Velocity

Mass Meas. Method

—

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

gam 1 Leo b

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

11 Jan 2011: Reffert et al. 2011 give a mass range derived from astrometry 9.2 - 130.9 M_Jup at the 3 σ level

No link

Star

Name

gamma 1 Leo

Distance

38.5 (\pm 1.0)

Spectral type

K0III

Apparent magnitude V

2.01

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.23 (\pm 0.21)

M_Sun 1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Age

—

Effective temperature

4330.0 (\pm 15.0)

K 1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Radius

31.88 (\pm 1.61)

R_Sun 1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Metallicity [Fe/H]

-0.51 (\pm 0.05)

1 publication

Detection of a planetary companion around the giant star γ¹ Leonis

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

10:19:58.0

Dec₂₀₀₀

+19:50:29.0

Alternate Names

gam 1 Leo

alias HD 89484

No link

Simbad
Most recent references (ADS)

Planet gamma 1 Leo b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks Some remarks

Other web pages No page

More data 2 references

Planet gamma 1 Leo b

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks Some remarks

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 1 planet

Remarks Some remarks

Other web pages No page

More data 2 references

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Mass constraints on substellar companions candidates from the re-reduced Hipparcos intermediate astrometric data: Nine confirmed planets and two confirmed brown dwarfs

The Exoplanet Orbit Database

Density Estimation for Projected Exoplanet Quantities

The Exoplanet Handbook

Defining and cataloging exoplanets: The exoplanet.eu database

Exoplanet Data Explorer

Detection of a planetary companion around the giant star γ1 Leonis

The Hill stability of the possible moons of extrasolar planets

Detection of a planetary companion around the giant star γ¹ Leonis