Planet CM Dra (AB)b

Detailed information about planet CM Dra (AB)b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

CM Dra (AB)b

Planet Status

Candidate

Discovered in

2008

Publication Status

—

Update

2025-07-24

Mass

1.4 (\begin{matrix} + 1.0 \\ - 0.2 \end{matrix})

M_J 1 publication

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity

Mass*sin(i)

1.2

M_J 2 publications

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity
Extrasolar planet detection by binary stellar eclipse timing: evidence for a third body around CM Draconis

Semi-Major Axis

—

Orbital Period

20440.0 day 2 publications

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity
Extrasolar planet detection by binary stellar eclipse timing: evidence for a third body around CM Draconis

Eccentricity

0.59 1 publication

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity

Angular distance

—

ω

—

T_peri

—

Radius

—

Inclination

60.0 (\pm 30.0)

deg 1 publication

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity

Detection Method

Timing

Mass Meas. Method

Timing

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

CM Dra (AB)

Distance

14.4 pc 1 publication

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity

Spectral type

M4.5V+M4.5V

Apparent magnitude V

12.9

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.44 M_Sun 1 publication

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity

Age

—

Effective temperature

3130.0 K 1 publication

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity

Radius

0.264 R_Sun 1 publication

Comprehensive analysis of CM Draconis: eclipse timing variations driven by either a third body or stellar magnetic activity

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

16:34:20.0

Dec₂₀₀₀

+57:09:44.0

Alternate Names

—

Nearly equal mass eclipsing binary with P = 1.268390011 d and i = 89.96°. M₁ = 0.23 M_Sol, M₂ = 0.213 M_Sol, R₁ = 0.264 R_Sol, R₂ = 0.246 R_Sol, T₁ = 3130 K and T₂ = 3103 K.
A white dwarf tertiary lies about 370 AUs away (Deeg et al. 2008).