Planet HD 105811 Ab

Detailed information about planet HD 105811 Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HD 105811 Ab

Planet Status

Candidate

Discovered in

2022

Update

2024-06-15

Mass

55.534 (\begin{matrix} + 13.075 \\ - 11.899 \end{matrix})

M_J 1 publication

3D Selection of 167 Substellar Companions to Nearby Stars

Mass*sin(i)

—

Semi-Major Axis

2.699 (\begin{matrix} + 0.054 \\ - 0.052 \end{matrix})

AU 1 publication

3D Selection of 167 Substellar Companions to Nearby Stars

Orbital Period

1175.3 (\begin{matrix} + 6.9 \\ - 7.1 \end{matrix})

day 1 publication

3D Selection of 167 Substellar Companions to Nearby Stars

Eccentricity

0.766 (\begin{matrix} + 0.071 \\ - 0.045 \end{matrix})

1 publication

3D Selection of 167 Substellar Companions to Nearby Stars

ω

109.484 (\begin{matrix} + 10.604 \\ - 4.319 \end{matrix})

deg 1 publication

3D Selection of 167 Substellar Companions to Nearby Stars

T_peri

—

Radius

—

Inclination

0.474 (\begin{matrix} + 0.177 \\ - 0.075 \end{matrix})

deg 1 publication

3D Selection of 167 Substellar Companions to Nearby Stars

Detection Method

Radial Velocity, Astrometry

Mass Meas. Method

Astrometry

Radius Meas. Method

—

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

—

Time V_r=0

—

Velocity Semiamplitude K

8.987 (\begin{matrix} + 2.523 \\ - 0.056 \end{matrix})

m/s 1 publication

3D Selection of 167 Substellar Companions to Nearby Stars

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

Orbits of HD 105811 Ab and companion star HD 105811 B appear misaligned but concerns about orbital stability are raised by discoverers themselves (Feng et al. 2022).

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Star

Name

HD 105811 A

Distance

122.125 (\pm 0.9975)

pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

K0III-IV

Apparent magnitude V

7.48

Mass

—

Age

—

Effective temperature

4934.0 (\pm 25.0)

Radius

5.49 R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

0.1 (\pm 0.1)

1 publication

The Revised TESS Input Catalog and Candidate Target List

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

12:10:48.3

Dec₂₀₀₀

-09:23:50.0

Alternate Names

—

Feng et al. (2022): HD 105811 forms a close-in binary system with an M dwarf star just 4.57 AUs away, whose separation and high eccentricity (e = 0.608) disrupt the Habitable Zone in addition to the evolution itself of the host star out of the Main Sequence.

No link