Planet BY Dra (AB)b

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

Planet parameters Publications Observability Predictor

Planet

Name

BY Dra (AB)b

Planet Status

Candidate

Discovered in

2012

Publication Status

Published in a refereed paper

Update

2026-02-23

Mass

—

Mass*sin(i)

5.44

M_J 1 publication

New high-precision orbital and physical parameters of the double-lined low-mass spectroscopic binary BY Draconis

Semi-Major Axis

16.07 AU

Orbital Period

— 1 publication

New high-precision orbital and physical parameters of the double-lined low-mass spectroscopic binary BY Draconis

Eccentricity

—

Angular distance

—

ω

—

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

No remarks

No link

Star

Name

BY Dra (AB)

Distance

16.5 (\pm 0.01)

pc 2 publications

A Preliminary Visual Orbit of BY Draconis
The Revised TESS Input Catalog and Candidate Target List

Spectral type

K4Ve+K7.5Ve

Apparent magnitude V

8.2

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.9 (\pm 0.025)

M_Sun 1 publication

A Preliminary Visual Orbit of BY Draconis

Age

2.6 (\pm 2.4)

Gyr 1 publication

New high-precision orbital and physical parameters of the double-lined low-mass spectroscopic binary BY Draconis

Effective temperature

4622.0 (\pm 112.2)

K 1 publication

The Revised TESS Input Catalog and Candidate Target List

Radius

0.746 (\pm 0.05)

R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

0.2 (\pm 0.05)

1 publication

The Revised TESS Input Catalog and Candidate Target List

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

18:33:55.8

Dec₂₀₀₀

+51:43:08.9

Alternate Names

Gl 719, HD 234677, HIP 91009

Triple systemi including an eclipsing binary pair composed of similar components (P = 5.975 d, m₁ = 0.792 ± 0.026 M_Sol and m₂ = 0.6979 ± 0.023 M_Sol) tracing an eccentric orbit (e = 0.3) and an outer M dwarf companion (BY Dra C, spT M5) about 281 AUs away.

No link