Planet 42 Dra Ab

Detailed information about planet 42 Dra Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

42 Dra Ab

Planet Status

Controversial

Discovered in

2009

Publication Status

—

Update

2025-05-14

Mass

—

Mass*sin(i)

3.88 (\begin{matrix} + 0.85 \\ - 0.85 \end{matrix})

M_J 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Semi-Major Axis

1.19 (\pm 0.01)

AU 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Orbital Period

479.1 (\pm 6.2)

day 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Eccentricity

0.38 (\pm 0.06)

1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Angular distance

0.01223 arcsec

ω

218.7 (\pm 10.6)

deg 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

T_peri

2452757.4 (\pm 3.7)

JD 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Radius

—

Inclination

—

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

—

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

42 Dra A

Distance

97.3 (\pm 5.0)

Spectral type

K1.5III

Apparent magnitude V

4.83

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.98 (\pm 0.05)

M_Sun 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Age

9.49 (\pm 1.76)

Gyr 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Effective temperature

4200.0 (\pm 70.0)

K 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Radius

22.03 (\pm 1.0)

R_Sun 1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Metallicity [Fe/H]

-0.46 (\pm 0.05)

1 publication

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

18:25:59.0

Dec₂₀₀₀

+65:33:49.0

Alternate Names

—

An M dwarf companion star lies 2210 AUs away.

No link

Simbad
Most recent references (ADS)

Planet 42 Dra Ab

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 0 planets

Remarks Some remarks

Other web pages No page

More data 2 references

Planet 42 Dra Ab

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 0 planets

Remarks Some remarks

Other web pages No page

More data 2 references

Related publications

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Defining and cataloging exoplanets: The exoplanet.eu database

The Exoplanet Handbook

Quantization of Planetary Systems and its Dependency on Stellar Rotation

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Density Estimation for Projected Exoplanet Quantities

Exoplanet Data Explorer

Hunting for extrasolar planets around K giants

Photometric Phase Variations of Long-Period Eccentric Planets

The Hill stability of the possible moons of extrasolar planets

Ruling Out Possible Secondary Stars to Exoplanet Host Stars Using the CHARA Array

Planetary companion candidates around the K giant stars 42 Draconis and HD 139357