Key parameters at a glance

A radius of 2.55 Earth radii
A mass of 7.05 Earth masses
Surface gravity around 1.08 g
An orbital period of 5.491 days
Semi-major axis 0.0622 AU
Equilibrium temperature 1,093 K (820 °C)
Distance from Earth 355.01 light-years
Earth Similarity Index 0.225
Travel time at Voyager 1 speed 6,260,677 years

TOI-5726.01 Planet Profile

Physical Specs

Radius

2.55 R⊕

Radius (Jupiter)

0.228 R♃

Mass

7.05 M⊕

Mass (Jupiter)

0.022 M♃

Density

2.33 g/cm³

Surface Gravity

1.08 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.225

HZ Position Inner

Controversial No

Discovery

Year 2024

Method Transit

Facility Transiting Exoplanet Survey Satellite (TESS)

Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#1100of 1978

top 55.6%

This planet

2.55R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1681 b 2.55 R⊕ Kepler-1836 b 2.55 R⊕ K2-80 d 2.55 R⊕

Metric	Earth	TOI-5726.01	Jupiter
Radius (R⊕)	1.00	2.55	11.21
Mass (M⊕)	1.00	7.05	317.83
Density (g/cm³)	5.51	2.33	1.33
Surface Gravity (g)	1.00	1.08	2.53
Insolation (S⊕)	1.00	338.95	0.037

Star Catalogue Identifiers

TIC

TIC 71582156

Gaia DR2

Gaia DR2 1097091022864217472

Gaia DR3

Gaia DR3 1097091022864217472

System

TOI-5726

Percentile among Sub-Neptune cohort

Radius 2.554 R⊕ · percentile 44 / cohort 1978

Mass 7.050 M⊕ · percentile 41 / cohort 1978

Orbital period 5.49 d · percentile 15 / cohort 1946

Distance 108.85 pc · percentile 21 / cohort 1975

ESI 0.225 · percentile 11 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

5.491 days

Semi-major axis

0.0622 AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 5.49 Earth days (1.5% of a terrestrial year) at a mean orbital distance of 0.0622 AU.

Transit Fingerprint

Depth

0.045 %

Duration

1.887 h

Rp / R★

0.021010

Transit midpoint (BJD)

2,458,843.5951

Photometric dip

Transit produces a flux drop of 449 ppm lasting ≈ 1.89 h.

Eq. Temperature

1,093K

(820 °C)

Insolation (S⊕)

338.95

Earth = 1.00

Earth Similarity (ESI)

0.225

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Crossfield et al. 2024

Instrument

TESS CCD Array

Publication

2024-11

Observation locale

Space

Discovery cohort

Planets confirmed in 2024 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).

Gliese 12 b · Rocky Terrestrial TOI-6002 b · Super-Earth TOI-5713 b · Super-Earth TOI-4336 A b · Sub-Neptune TOI-406.01 · Sub-Neptune TOI-1224 c · Sub-Neptune LHS 1678 d · Rocky Terrestrial TOI-2088 b · Sub-Neptune TOI-2120 b · Sub-Neptune TOI-1806.01 · Sub-Neptune TOI-4633 c · Sub-Neptune TOI-260 b · Super-Earth

Host System: TOI-5726

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,874 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.106 R☉

Stellar Mass

1.060 M☉

Metallicity [Fe/H]

—

Distance

108.85 parsec

Light-years 355.01 ly

V-band magnitude

9.74 mag

Voyager-speed travel 6,260,677 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

9.158 mas

Total Proper Motion

67.059 mas/yr

PM Right Ascension

-44.62 mas/yr

PM Declination

-50.06 mas/yr

Galactic Cartesian (pc)

x = -0.201 · y = 0.305 · z = 0.931

Equatorial (J2000)

RA 123.39505° · Dec 68.57459°

Galactic ℓ, b

146.884° · 32.583°

Ecliptic λ, β

107.182° · 47.119°

HTM-20 index

15798283