Planet zet Her Ab

Detailed information about planet zet Her Ab and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

zet Her Ab

Planet Status

Candidate

Discovered in

2001

Publication Status

Published in a refereed paper

Update

2024-07-06

Mass

50.0

M_J 1 publication

The ζ Herculis binary system revisited. Calibration and seismology

Mass*sin(i)

—

Semi-Major Axis

—

Orbital Period

—

Eccentricity

—

Angular distance

—

ω

—

T_peri

—

Radius

—

Inclination

—

Detection Method

Radial Velocity

Mass Meas. Method

—

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 presence of a third body in Zeta Herculis binary system is suspected since early XX Century and increasingly investigated in late 80s-early 90s (e.g. Baize 1976, McCarthy 1983, Lebreton et al. 1993). Morel et al. (2001) infer a mass less than 50 M_Jup, compatible either with a brown dwarf or a giant planet. Orbital period is assumed to be equal or less than 12 years.

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Star

Name

zet Her A

Distance

10.79564 pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

G0IV

Apparent magnitude V

2.8

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

1.45 (\pm 0.01)

M_Sun 1 publication

The ζ Herculis binary system revisited. Calibration and seismology

Age

3.38 Gyr 1 publication

The ζ Herculis binary system revisited. Calibration and seismology

Effective temperature

5795.47 K 1 publication

The Revised TESS Input Catalog and Candidate Target List

Radius

2.688 R_Sun 1 publication

The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

0.082 (\pm 0.0136)

1 publication

The Revised TESS Input Catalog and Candidate Target List

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

16:41:17.2

Dec₂₀₀₀

+31:36:09.8

Alternate Names

40 Her

Zeta Herculis forms a binary system with a late G to early K dwarf companion star 15 AUs away in eccentric orbit (P = 34.45 ± 0.005 yr, e = 0.462 ± 0.002, i = 131°).

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