Key parameters at a glance

A radius of 1.18 Earth radii
A mass of 1.76 Earth masses
Surface gravity around 1.26 g
An orbital period of 1.389 days
Semi-major axis 0.0154 AU
Equilibrium temperature 634 K (361 °C)
Distance from Earth 102.60 light-years
Earth Similarity Index 0.499
Travel time at Voyager 1 speed 1,809,308 years
Almost certainly tidally locked to its host star given the close orbit

TOI-6086 b Planet Profile

Physical Specs

Radius

1.18 R⊕

Radius (Jupiter)

0.105 R♃

Mass

1.76 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.89 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.499

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

#117of 570

top 20.4%

This planet

1.18R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1430 b 1.18 R⊕ Kepler-1512 b 1.18 R⊕ Kepler-332 d 1.18 R⊕

Metric	Earth	TOI-6086 b	Jupiter
Radius (R⊕)	1.00	1.18	11.21
Mass (M⊕)	1.00	1.76	317.83
Density (g/cm³)	5.51	5.89	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	26.80	0.037

Star Catalogue Identifiers

TIC

TIC 18318288

Gaia DR2

Gaia DR2 4597447518944594176

Gaia DR3

Gaia DR3 4597447518944594176

System

TOI-6086

Percentile among Rocky Terrestrial cohort

Radius 1.180 R⊕ · percentile 77 / cohort 570

Mass 1.760 M⊕ · percentile 71 / cohort 570

Orbital period 1.39 d · percentile 15 / cohort 567

Distance 31.46 pc · percentile 14 / cohort 566

ESI 0.499 · percentile 70 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

1.389 days

Semi-major axis

0.0154 AU

Eccentricity

—

Inclination

87.30 °

Year Length

A year here lasts approximately 1.39 Earth days (0.4% of a terrestrial year) at a mean orbital distance of 0.0154 AU.

Transit Fingerprint

Depth

0.153 %

Duration

0.700 h

Impact parameter b

0.608

Rp / R★

0.041730

Transit midpoint (BJD)

2,460,131.9695

Photometric dip

Transit produces a flux drop of 1,531 ppm lasting ≈ 0.70 h.

Extended Orbital Architecture

Planet / star radius ratio

0.041730

Semi-major axis / stellar radius

12.750

Impact parameter (b)

0.608

Transit mid-time (BJD)

2,460,131.9695

Angular separation (arcsec)

0.49000

Eq. Temperature

634K

(361 °C)

Insolation (S⊕)

26.80

Earth = 1.00

Earth Similarity (ESI)

0.499

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

Barkaoui 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-6086

Spectral Class

M-type red dwarf

Effective Temperature

3,200 K — cooler than the Sun (5,778 K)

Estimated Age

2.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.259 R☉

Stellar Mass

0.254 M☉

Metallicity [Fe/H]

0.11

Extended Stellar Properties

Surface gravity (log g)

5.010 dex

Stellar density

20.612 g/cm³

Metallicity ratio

[Fe/H]

Distance

31.46 parsec

Light-years 102.60 ly

V-band magnitude

14.98 mag

Voyager-speed travel 1,809,308 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

31.761 mas

Total Proper Motion

110.616 mas/yr

PM Right Ascension

-110.60 mas/yr

PM Declination

2.17 mas/yr

Galactic Cartesian (pc)

x = -0.070 · y = -0.861 · z = 0.505

Equatorial (J2000)

RA 265.37042° · Dec 30.30378°

Galactic ℓ, b

54.816° · 27.452°

Ecliptic λ, β

263.247° · 53.635°

HTM-20 index

1737720201