Key parameters at a glance

A radius of 3.45 Earth radii
A mass of 11.80 Earth masses
Surface gravity around 0.99 g
An orbital period of 7.338 days
Semi-major axis 0.0764 AU
Equilibrium temperature 1,566 K (1293 °C)
Distance from Earth 514.01 light-years
Earth Similarity Index 0.132
Travel time at Voyager 1 speed 9,064,602 years

TOI-1768.01 Planet Profile

Physical Specs

Radius

3.45 R⊕

Radius (Jupiter)

0.308 R♃

Mass

11.80 M⊕

Mass (Jupiter)

0.037 M♃

Density

1.57 g/cm³

Surface Gravity

0.99 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.132

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

#199of 1978

top 10.0%

This planet

3.45R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

HD 24085 b 3.46 R⊕ HD 69830 c 3.46 R⊕ TOI-1853 b 3.46 R⊕

Metric	Earth	TOI-1768.01	Jupiter
Radius (R⊕)	1.00	3.45	11.21
Mass (M⊕)	1.00	11.80	317.83
Density (g/cm³)	5.51	1.57	1.33
Surface Gravity (g)	1.00	0.99	2.53
Insolation (S⊕)	1.00	240.87	0.037

Star Catalogue Identifiers

TIC

TIC 137906197

Gaia DR2

Gaia DR2 852857845015534080

Gaia DR3

Gaia DR3 852857845015534080

System

TOI-1768

Percentile among Sub-Neptune cohort

Radius 3.453 R⊕ · percentile 90 / cohort 1978

Mass 11.800 M⊕ · percentile 83 / cohort 1978

Orbital period 7.34 d · percentile 23 / cohort 1946

Distance 157.60 pc · percentile 26 / cohort 1975

ESI 0.132 · percentile 1 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

7.338 days

Semi-major axis

0.0764 AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 7.34 Earth days (2.0% of a terrestrial year) at a mean orbital distance of 0.0764 AU.

Transit Fingerprint

Depth

0.080 %

Duration

4.564 h

Rp / R★

0.028700

Transit midpoint (BJD)

2,459,627.0224

Photometric dip

Transit produces a flux drop of 795 ppm lasting ≈ 4.56 h.

Eq. Temperature

1,566K

(1293 °C)

Insolation (S⊕)

240.87

Earth = 1.00

Earth Similarity (ESI)

0.132

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-1768

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,994 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.100 R☉

Stellar Mass

1.100 M☉

Metallicity [Fe/H]

—

Distance

157.60 parsec

Light-years 514.01 ly

V-band magnitude

10.42 mag

Voyager-speed travel 9,064,602 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

6.317 mas

Total Proper Motion

34.483 mas/yr

PM Right Ascension

-21.64 mas/yr

PM Declination

-26.85 mas/yr

Galactic Cartesian (pc)

x = -0.500 · y = 0.265 · z = 0.825

Equatorial (J2000)

RA 152.10278° · Dec 55.53996°

Galactic ℓ, b

157.388° · 49.238°

Ecliptic λ, β

131.214° · 40.630°

HTM-20 index

-1554700595