Key parameters at a glance

A radius of 0.96 Earth radii
A mass of 0.84 Earth masses
Surface gravity around 0.91 g
An orbital period of 6.766 days
Equilibrium temperature 400 K (127 °C)
Distance from Earth 128.55 light-years
Earth Similarity Index 0.768
Travel time at Voyager 1 speed 2,266,895 years
Almost certainly tidally locked to its host star given the close orbit

TOI-5716 b Planet Profile

Physical Specs

Radius

0.96 R⊕

Radius (Jupiter)

0.086 R♃

Mass

0.84 M⊕

Mass (Jupiter)

0.003 M♃

Density

5.22 g/cm³

Surface Gravity

0.91 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.768

HZ Position Inner

Controversial No

Discovery

Year 2025

Method Transit

Facility Transiting Exoplanet Survey Satellite (TESS)

Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#366of 570

top 64.0%

This planet

0.96R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1445 b 0.96 R⊕ Kepler-399 b 0.96 R⊕ Kepler-524 c 0.96 R⊕

Metric	Earth	TOI-5716 b	Jupiter
Radius (R⊕)	1.00	0.96	11.21
Mass (M⊕)	1.00	0.84	317.83
Density (g/cm³)	5.51	5.22	1.33
Surface Gravity (g)	1.00	0.91	2.53
Insolation (S⊕)	1.00	3.41	0.037

Star Catalogue Identifiers

TIC

TIC 298074836

Gaia DR2

Gaia DR2 1688346597471844096

Gaia DR3

Gaia DR3 1688346597471844096

System

TOI-5716

Percentile among Rocky Terrestrial cohort

Radius 0.960 R⊕ · percentile 35 / cohort 570

Mass 0.840 M⊕ · percentile 31 / cohort 570

Orbital period 6.77 d · percentile 65 / cohort 567

Distance 39.41 pc · percentile 16 / cohort 566

ESI 0.768 · percentile 86 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

6.766 days

Semi-major axis

— AU

Eccentricity

—

Inclination

89.40 °

Year Length

A year here lasts approximately 6.77 Earth days (1.9% of a terrestrial year).

Transit Fingerprint

Depth

0.200 %

Duration

1.058 h

Impact parameter b

0.410

Rp / R★

0.039000

Transit midpoint (BJD)

2,458,683.6151

Photometric dip

Transit produces a flux drop of 1,998 ppm lasting ≈ 1.06 h.

Extended Orbital Architecture

Planet / star radius ratio

0.039000

Semi-major axis / stellar radius

39.000

Impact parameter (b)

0.410

Transit mid-time (BJD)

2,458,683.6151

Eq. Temperature

400K

(127 °C)

Insolation (S⊕)

3.41

Earth = 1.00

Earth Similarity (ESI)

0.768

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Gomez Barrientos et al. 2025

Instrument

TESS CCD Array

Publication

2025-12

Observation locale

Space

Discovery cohort

Planets confirmed in 2025 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).

TOI-1266 d · Super-Earth TOI-2267 c · Rocky Terrestrial TOI-5799 c · Super-Earth TOI-5728 b · Super-Earth TOI-7166 b · Sub-Neptune TOI-2267 b · Rocky Terrestrial TOI-2093 c · Sub-Neptune TOI-2267 d · Super-Earth TOI-5489 c · Super-Earth TOI-1743 b · Super-Earth TOI-4364 b · Sub-Neptune HD 35843 c · Sub-Neptune

Host System: TOI-5716

Spectral Class

M-type red dwarf

Effective Temperature

3,436 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.220 R☉

Stellar Mass

0.190 M☉

Metallicity [Fe/H]

-0.54

Extended Stellar Properties

Surface gravity (log g)

5.021 dex

Stellar density

23.868 g/cm³

Systemic radial velocity

25.50 km/s

Metallicity ratio

[Fe/H]

Distance

39.41 parsec

Light-years 128.55 ly

V-band magnitude

15.83 mag

Voyager-speed travel 2,266,895 yr

Multi-band Host Photometry — 10 bands

Astrometric Data

Parallax

25.344 mas

Total Proper Motion

232.048 mas/yr

PM Right Ascension

-81.50 mas/yr

PM Declination

-217.26 mas/yr

Galactic Cartesian (pc)

x = -0.269 · y = -0.108 · z = 0.957

Equatorial (J2000)

RA 201.90080° · Dec 73.17743°

Galactic ℓ, b

119.325° · 43.697°

Ecliptic λ, β

133.623° · 67.096°

HTM-20 index

-1216071323