Key parameters at a glance

A radius of 1.03 Earth radii
A mass of 4.00 Earth masses
Surface gravity around 3.77 g
An orbital period of 0.857 days
Semi-major axis 0.0108 AU
Equilibrium temperature 707 K (434 °C)
Distance from Earth 75.34 light-years
Earth Similarity Index 0.329
Travel time at Voyager 1 speed 1,328,703 years
Almost certainly tidally locked to its host star given the close orbit

TOI-6008 b Planet Profile

Physical Specs

Radius

1.03 R⊕

Radius (Jupiter)

0.092 R♃

Mass

4.00 M⊕

Mass (Jupiter)

0.013 M♃

Density

— g/cm³

Surface Gravity

3.77 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.329

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

#297of 570

top 51.9%

This planet

1.03R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-395 b 1.03 R⊕ Kepler-387 b 1.03 R⊕ Kepler-1398 c 1.03 R⊕

Metric	Earth	TOI-6008 b	Jupiter
Radius (R⊕)	1.00	1.03	11.21
Mass (M⊕)	1.00	4.00	317.83
Density (g/cm³)	5.51	—	1.33
Surface Gravity (g)	1.00	3.77	2.53
Insolation (S⊕)	1.00	41.50	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4.000 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 286201103

Gaia DR2

Gaia DR2 2168280502430898944

Gaia DR3

Gaia DR3 2168280502430898944

System

TOI-6008

Percentile among Rocky Terrestrial cohort

Radius 1.030 R⊕ · percentile 46 / cohort 570

Mass 4.000 M⊕ · percentile 94 / cohort 570

Orbital period 0.86 d · percentile 9 / cohort 567

Distance 23.10 pc · percentile 11 / cohort 566

ESI 0.329 · percentile 46 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

0.857 days

Semi-major axis

0.0108 AU

Eccentricity

—

Inclination

87.20 °

Year Length

A year here lasts roughly 20.6 hours long at a mean orbital distance of 0.0108 AU.

Transit Fingerprint

Depth

0.152 %

Duration

0.650 h

Impact parameter b

0.450

Rp / R★

0.038670

Transit midpoint (BJD)

2,460,078.0162

Photometric dip

Transit produces a flux drop of 1,517 ppm lasting ≈ 0.65 h.

Extended Orbital Architecture

Planet / star radius ratio

0.038670

Semi-major axis / stellar radius

9.440

Impact parameter (b)

0.450

RV semi-amplitude (K)

2.100 m/s

Transit mid-time (BJD)

2,460,078.0162

Angular separation (arcsec)

0.46700

Eq. Temperature

707K

(434 °C)

Insolation (S⊕)

41.50

Earth = 1.00

Earth Similarity (ESI)

0.329

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-6008

Spectral Class

M-type red dwarf

Effective Temperature

3,075 K — cooler than the Sun (5,778 K)

Estimated Age

3.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.242 R☉

Stellar Mass

0.230 M☉

Metallicity [Fe/H]

0.30

Extended Stellar Properties

Surface gravity (log g)

5.010 dex

Stellar density

22.867 g/cm³

Metallicity ratio

[Fe/H]

Distance

23.10 parsec

Light-years 75.34 ly

V-band magnitude

15.97 mag

Voyager-speed travel 1,328,703 yr

Multi-band Host Photometry — 10 bands

Astrometric Data

Parallax

43.260 mas

Total Proper Motion

164.547 mas/yr

PM Right Ascension

158.44 mas/yr

PM Declination

44.40 mas/yr

Galactic Cartesian (pc)

x = 0.420 · y = -0.493 · z = 0.762

Equatorial (J2000)

RA 310.44873° · Dec 49.64690°

Galactic ℓ, b

87.780° · 4.623°

Ecliptic λ, β

340.473° · 63.532°

HTM-20 index

1732733034