Key parameters at a glance

A radius of 0.94 Earth radii
A mass of 0.78 Earth masses
Surface gravity around 0.88 g
An orbital period of 0.449 days
Equilibrium temperature 1,120 K (847 °C)
Distance from Earth 247.12 light-years
Earth Similarity Index 0.281
Travel time at Voyager 1 speed 4,357,902 years
Almost certainly tidally locked to its host star given the close orbit

TOI-6000 b Planet Profile

Physical Specs

Radius

0.94 R⊕

Radius (Jupiter)

0.084 R♃

Mass

0.78 M⊕

Mass (Jupiter)

0.002 M♃

Density

5.15 g/cm³

Surface Gravity

0.88 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.281

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

#384of 570

top 67.2%

This planet

0.94R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1438 b 0.94 R⊕ Kepler-1572 b 0.94 R⊕ Kepler-1169 b 0.94 R⊕

Metric	Earth	TOI-6000 b	Jupiter
Radius (R⊕)	1.00	0.94	11.21
Mass (M⊕)	1.00	0.78	317.83
Density (g/cm³)	5.51	5.15	1.33
Surface Gravity (g)	1.00	0.88	2.53
Insolation (S⊕)	1.00	258.75	0.037

Star Catalogue Identifiers

TIC

TIC 259233660

System

TOI-6000

Percentile among Rocky Terrestrial cohort

Radius 0.940 R⊕ · percentile 32 / cohort 570

Mass 0.779 M⊕ · percentile 28 / cohort 570

Orbital period 0.45 d · percentile 2 / cohort 567

Distance 75.77 pc · percentile 21 / cohort 566

ESI 0.281 · percentile 33 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

0.449 days

Semi-major axis

— AU

Eccentricity

—

Inclination

87.05 °

Year Length

A year here lasts roughly 10.8 hours long.

Transit Fingerprint

Depth

0.067 %

Duration

0.764 h

Impact parameter b

0.240

Rp / R★

0.022800

Transit midpoint (BJD)

2,460,109.9170

Photometric dip

Transit produces a flux drop of 675 ppm lasting ≈ 0.76 h.

Extended Orbital Architecture

Planet / star radius ratio

0.022800

Semi-major axis / stellar radius

4.660

Impact parameter (b)

0.240

Transit mid-time (BJD)

2,460,109.9170

Eq. Temperature

1,120K

(847 °C)

Insolation (S⊕)

258.75

Earth = 1.00

Earth Similarity (ESI)

0.281

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Gomez Barrientos et al. 2025

Instrument

TESS CCD Array

Publication

2025-08

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-5716 b · Rocky Terrestrial 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

Host System: TOI-6000

Spectral Class

M-type red dwarf

Effective Temperature

3,419 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.380 R☉

Stellar Mass

0.370 M☉

Metallicity [Fe/H]

—

Distance

75.77 parsec

Light-years 247.12 ly

V-band magnitude

15.45 mag

Voyager-speed travel 4,357,902 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

13.170 mas

Total Proper Motion

13.980 mas/yr

PM Right Ascension

-8.20 mas/yr

PM Declination

11.32 mas/yr

Galactic Cartesian (pc)

x = 0.143 · y = -0.344 · z = 0.928

Equatorial (J2000)

RA 292.60630° · Dec 68.15459°

Galactic ℓ, b

99.711° · 21.542°

Ecliptic λ, β

20.695° · 81.205°

HTM-20 index

-578099605