Planet TrES-1 Ac

Detailed information about planet TrES-1 Ac and its parameters.

Planet parameters Publications Observability Predictor

Planet

Name

TrES-1 Ac

Planet Status

Candidate

Discovered in

2025

Publication Status

Published in a refereed paper

Update

2025-08-22

Mass

—

Mass*sin(i)

0.36

M_J 1 publication

TrES-1 b: A Case Study in Detecting Secular Evolution of Exoplanet Orbits

Semi-Major Axis

2.1 AU 1 publication

TrES-1 b: A Case Study in Detecting Secular Evolution of Exoplanet Orbits

Orbital Period

1200.0 (\begin{matrix} + 26.0 \\ - 20.0 \end{matrix})

day 1 publication

TrES-1 b: A Case Study in Detecting Secular Evolution of Exoplanet Orbits

Eccentricity

0.65 (\pm 0.1)

1 publication

TrES-1 b: A Case Study in Detecting Secular Evolution of Exoplanet Orbits

Angular distance

—

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

10.0 (\begin{matrix} + 1.6 \\ - 1.5 \end{matrix})

m/s 1 publication

TrES-1 b: A Case Study in Detecting Secular Evolution of Exoplanet Orbits

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

TrES-1 A

Distance

159.66 (\pm 0.73)

pc 1 publication

The Revised TESS Input Catalog and Candidate Target List

Spectral type

K0V

Apparent magnitude V

11.79

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.896 (\begin{matrix} + 0.118 \\ - 0.0957 \end{matrix})

M_Sun 2 publications

TrES-1: The Transiting Planet of a Bright K0V Star.
The Revised TESS Input Catalog and Candidate Target List

Age

3.7 (\begin{matrix} + 3.4 \\ - 2.8 \end{matrix})

Gyr 2 publications

On the Age of Stars Harboring Transiting Planets
The GAPS Programme with HARPS-N@TNG XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets

Effective temperature

5242.82 (\begin{matrix} + 112.6 \\ - 108.9 \end{matrix})

K 1 publication

The Revised TESS Input Catalog and Candidate Target List

Radius

0.857 (\begin{matrix} + 0.038 \\ - 0.053 \end{matrix})

R_Sun 2 publications

TrES-1: The Transiting Planet of a Bright K0V Star.
The Revised TESS Input Catalog and Candidate Target List

Metallicity [Fe/H]

0.0414 (\pm 0.037)

1 publication

The Revised TESS Input Catalog and Candidate Target List

Detected Disc

—

Magnetic Field

—

RA₂₀₀₀

19:04:09.0

Dec₂₀₀₀

+36:37:57.0

Alternate Names

GSC 02652-01324, FAE 1 A, ADM 4 A, TOI-1236, V672 Lyr

A faint M dwarf companion star lies 2101 AUs away (Michel & Mugrauer 2024). Rabus et al. (2009b) inferred the presence of a way closer (a ~ 7.8 AUs), additional low-mass star (m ~ 0.09 M_Sol) by transit timing variations of the hot Jupiter planet but to date this detection remains unconfirmed.

No link