Confirmed Exoplanet Discovered 2023

TOI-2524 b

A gas giant orbiting the g-type yellow (sun-like) TOI-2524, located approximately 1,431.3 light-years from Earth.

Key parameters at a glance

  • A radius of 11.21 Earth radii
  • A mass of 203.41 Earth masses
  • Surface gravity around 1.62 g
  • An orbital period of 7.186 days
  • Semi-major axis 0.0730 AU
  • Equilibrium temperature 1,100 K (827 °C)
  • Distance from Earth 1,431.31 light-years
  • Earth Similarity Index 0.132
  • Travel time at Voyager 1 speed 25,241,142 years

TOI-2524 b Planet Profile

Physical Specs

Radius
11.21 R⊕
Radius (Jupiter)
1.000 R♃
Mass
203.41 M⊕
Mass (Jupiter)
0.640 M♃
Density
0.79 g/cm³
Surface Gravity
1.62 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.132
HZ Position Inner
Controversial No

Discovery

Year 2023
Method Transit
Facility Transiting Exoplanet Survey Satellite (TESS)
Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#1633of 1771

top 92.2%

This planet

11.21R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth TOI-2524 b Jupiter
Radius (R⊕)1.0011.2111.21
Mass (M⊕)1.00203.41317.83
Density (g/cm³)5.510.791.33
Surface Gravity (g)1.001.622.53
Insolation (S⊕)1.00210.610.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 203.410 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 169249234

Gaia DR2

Gaia DR2 3802583419029393152

Gaia DR3

Gaia DR3 3802583419029393152

System

TOI-2524

Percentile among Gas Giant cohort

Radius 11.209 R⊕ · percentile 8 / cohort 1771
Mass 203.410 M⊕ · percentile 20 / cohort 1747
Orbital period 7.19 d · percentile 42 / cohort 1533
Distance 438.84 pc · percentile 72 / cohort 1759
ESI 0.132 · percentile 34 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
7.186 days
Semi-major axis
0.0730 AU
Eccentricity
0.000
Inclination
89.40 °

Year Length

A year here lasts approximately 7.19 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0730 AU.

Transit Fingerprint

Depth

1.119 %

Duration

4.254 h

Rp / R★

0.092000

Transit midpoint (BJD)

2,458,550.1550

Photometric dip

Transit produces a flux drop of 11,193 ppm lasting ≈ 4.25 h.

Extended Orbital Architecture

Planet / star radius ratio

0.092000

Semi-major axis / stellar radius

14.300

RV semi-amplitude (K)

67.000 m/s

Transit mid-time (BJD)

2,458,550.1550

Angular separation (arcsec)

0.16600

Eq. Temperature

1,100K

(827 °C)

Insolation (S⊕)

210.61

Earth = 1.00

Earth Similarity (ESI)

0.132

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Eberhardt et al. 2023

Instrument

TESS CCD Array

Publication

2023-12

Observation locale

Space

Host System: TOI-2524

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,831 K — hotter than the Sun (5,778 K)

Estimated Age

6.70 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.119 R☉

Stellar Mass

1.007 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

4.344 dex

Stellar density

1.013 g/cm³

Rotational v·sin i

2.20 km/s

Metallicity ratio

[Fe/H]

Distance
438.84 parsec
Light-years 1,431.31 ly
V-band magnitude
12.80 mag
Voyager-speed travel 25,241,142 yr

Multi-band Host Photometry — 16 bands

8.915.615.11U13.46B12.80V12.62Gaia12.18TESS14.56Sloan g14.69Sloan r15.59Sloan i13.01Sloan z11.56J11.27H11.20K11.15W111.20W211.05W38.92W4

Astrometric Data

Parallax

2.250 mas

Total Proper Motion

11.086 mas/yr

PM Right Ascension

9.97 mas/yr

PM Declination

4.85 mas/yr

Galactic Cartesian (pc)

x = -0.944 · y = 0.327 · z = -0.033

Equatorial (J2000)

RA 160.88684° · Dec -1.91270°

Galactic ℓ, b

251.122° · 47.675°

Ecliptic λ, β

163.093° · -9.253°

HTM-20 index

-244539241

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