Planet HD 157172 b

Detailed information about planet HD 157172 b and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

HD 157172 b

Planet Status

Confirmed

Discovered in

2011

Publication Status

Published in a refereed paper

Update

2025-07-27

Mass

—

Mass*sin(i)

0.12

M_J 1 publication

The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets

Semi-Major Axis

0.416 AU 1 publication

The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets

Orbital Period

104.84 day 1 publication

The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets

Eccentricity

0.46 1 publication

The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets

Angular distance

0.013041

arcsec

ω

—

T_peri

—

Radius

—

Inclination

—

Detection Method

Radial Velocity

Mass Meas. Method

Radial Velocity

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

Star

Name

HD 157172

Distance

33.0 (\pm 0.066)

pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

G6V

Apparent magnitude V

7.86

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.95 (\pm 0.12)

M_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Age

—

Effective temperature

5450.0 (\pm 147.0)

K 1 publication

The Revised TESS Input Catalog and Candidate Target List

Radius

0.957 (\pm 0.059)

R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

0.113 (\pm 0.013)

1 publication

The Revised TESS Input Catalog and Candidate Target List

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

17:22:35.0

Dec₂₀₀₀

-19:36:58.0

Alternate Names

González-Payo et al. (2024) report a faint optical companion 164 AUs away (Gaia DR3 4128492924808088320) with no characterization of its mass and spectral type. However mean photometric magnitude of 19.52 suggests either a very low-mass M dwarf star or even a brown dwarf (Gaia 2023).

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