Key parameters at a glance

A radius of 2.55 Earth radii
A mass of 7.03 Earth masses
Surface gravity around 1.08 g
An orbital period of 4.240 days
Semi-major axis 0.0512 AU
Equilibrium temperature 1,165 K (892 °C)
Distance from Earth 140.71 light-years
Earth Similarity Index 0.210
Travel time at Voyager 1 speed 2,481,344 years

TOI-5082.01 Planet Profile

Physical Specs

Radius

2.55 R⊕

Radius (Jupiter)

0.227 R♃

Mass

7.03 M⊕

Mass (Jupiter)

0.022 M♃

Density

2.33 g/cm³

Surface Gravity

1.08 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.210

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

#1115of 1978

top 56.3%

This planet

2.55R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-1043 b 2.55 R⊕ Kepler-156 c 2.55 R⊕ Kepler-1535 b 2.55 R⊕

Metric	Earth	TOI-5082.01	Jupiter
Radius (R⊕)	1.00	2.55	11.21
Mass (M⊕)	1.00	7.03	317.83
Density (g/cm³)	5.51	2.33	1.33
Surface Gravity (g)	1.00	1.08	2.53
Insolation (S⊕)	1.00	254.59	0.037

Star Catalogue Identifiers

HIP

HIP 34271

TIC

TIC 437011608

Gaia DR2

Gaia DR2 3368214650329888512

Gaia DR3

Gaia DR3 3368214650329888512

System

TOI-5082

Percentile among Sub-Neptune cohort

Radius 2.548 R⊕ · percentile 44 / cohort 1978

Mass 7.030 M⊕ · percentile 40 / cohort 1978

Orbital period 4.24 d · percentile 9 / cohort 1946

Distance 43.14 pc · percentile 10 / cohort 1975

ESI 0.210 · percentile 8 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

4.240 days

Semi-major axis

0.0512 AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 4.24 Earth days (1.2% of a terrestrial year) at a mean orbital distance of 0.0512 AU.

Transit Fingerprint

Depth

0.084 %

Duration

2.388 h

Rp / R★

0.025098

Transit midpoint (BJD)

2,460,284.8026

Photometric dip

Transit produces a flux drop of 842 ppm lasting ≈ 2.39 h.

Extended Orbital Architecture

Planet / star radius ratio

0.025098

Semi-major axis / stellar radius

11.845

Transit mid-time (BJD)

2,460,284.8026

Angular separation (arcsec)

1.19000

Eq. Temperature

1,165K

(892 °C)

Insolation (S⊕)

254.59

Earth = 1.00

Earth Similarity (ESI)

0.210

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Hord et al. 2024

Instrument

TESS CCD Array

Publication

2024-05

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-5082

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,670 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.930 R☉

Stellar Mass

0.997 M☉

Metallicity [Fe/H]

0.09

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

1.744 g/cm³

Metallicity ratio

[M/H]

Distance

43.14 parsec

Light-years 140.71 ly

V-band magnitude

8.25 mag

Voyager-speed travel 2,481,344 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

23.151 mas

Total Proper Motion

121.410 mas/yr

PM Right Ascension

-92.35 mas/yr

PM Declination

-78.82 mas/yr

Galactic Cartesian (pc)

x = -0.263 · y = 0.884 · z = 0.386

Equatorial (J2000)

RA 106.56958° · Dec 22.68315°

Galactic ℓ, b

193.990° · 13.237°

Ecliptic λ, β

105.252° · 0.117°

HTM-20 index

-725398403