Planet Kepler-451 (AB)c

Detailed information about planet Kepler-451 (AB)c and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

Kepler-451 (AB)c

Planet Status

Controversial

Discovered in

2015

Publication Status

—

Update

2026-06-26

Mass

— 1 publication

Detection of a planet in the sdB + M dwarf binary system 2M1938+4603

Mass*sin(i)

1.86 (\pm 0.5)

M_J 1 publication

Detection of two additional circumbinary planets around Kepler-451

Semi-Major Axis

0.9 (\pm 0.04)

AU 2 publications

Detection of two additional circumbinary planets around Kepler-451
Detection of a planet in the sdB + M dwarf binary system 2M1938+4603

Orbital Period

406.0 (\pm 4.0)

day 2 publications

Detection of two additional circumbinary planets around Kepler-451
Detection of a planet in the sdB + M dwarf binary system 2M1938+4603

Eccentricity

0.33 (\pm 0.05)

1 publication

Detection of two additional circumbinary planets around Kepler-451

Angular distance

—

ω

302.0 (\pm 8.0)

deg 1 publication

Detection of two additional circumbinary planets around Kepler-451

T_peri

—

Radius

—

Inclination

—

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

The planet detection and mass determination come from the timing of the binary parent star eclipses (Baran et al. 2015)
See also Circumbinary Planets webpage.

No link

Star

Name

Kepler-451 (AB)

Distance

409.66 (\begin{matrix} + 5.37 \\ - 5.23 \end{matrix})

Spectral type

sdB+M

Apparent magnitude V

12.7

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.6 (\pm 0.03)

M_Sun 2 publications

Detection of a planet in the sdB + M dwarf binary system 2M1938+4603
2M1938+4603: a rich, multimode pulsating sdB star with an eclipsing dM companion observed with Kepler

Age

—

Effective temperature

29564.0 (\pm 106.0)

K 1 publication

2M1938+4603: a rich, multimode pulsating sdB star with an eclipsing dM companion observed with Kepler

Radius

0.203 (\pm 0.001)

R_Sun 1 publication

Detection of two additional circumbinary planets around Kepler-451

Metallicity [Fe/H]

—

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

19:38:33.0

Dec₂₀₀₀

+46:03:59.0

Alternate Names

KIC 9472174, 2MASS J19383260+4603591

The star is a sdB+M eclipsing binary with individual component masses 0.48 and 0.12 M_Sol. The binary period is 0.125765282 ± 0.0000000005 d, average separation 0.00382 AUs, inclination 69.45±0.20° (Barlow et al. 2012, Baran et al. 2015, Esmer et al. 2022).

No link