Key parameters at a glance

A radius of 7.31 Earth radii
A mass of 18.10 Earth masses
Surface gravity around 0.34 g
An orbital period of 11.531 days
Semi-major axis 0.1019 AU
Equilibrium temperature 878 K (605 °C)
Distance from Earth 812.15 light-years
Earth Similarity Index 0.153
Travel time at Voyager 1 speed 14,322,229 years

2 siblings around TOI-7510

TOI-7510 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
TOI-7510 b this	Neptune-like	7.31	18.10	11.531	878	2025
TOI-7510 c	Gas Giant	10.81	131.00	22.569	702	2025
TOI-7510 d	Gas Giant	10.52	190.00	48.864	542	2025

TOI-7510 b Planet Profile

Physical Specs

Radius

7.31 R⊕

Radius (Jupiter)

0.652 R♃

Mass

18.10 M⊕

Mass (Jupiter)

0.057 M♃

Density

0.26 g/cm³

Surface Gravity

0.34 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.153

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

#185of 574

top 32.1%

This planet

7.31R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

TOI-1203 e 7.31 R⊕ K2-387 b 7.32 R⊕ K2-271 b 7.28 R⊕

Metric	Earth	TOI-7510 b	Jupiter
Radius (R⊕)	1.00	7.31	11.21
Mass (M⊕)	1.00	18.10	317.83
Density (g/cm³)	5.51	0.26	1.33
Surface Gravity (g)	1.00	0.34	2.53
Insolation (S⊕)	1.00	1,678.51	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	18.100 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 118798035

Gaia DR2

Gaia DR2 6652378156475401216

Gaia DR3

Gaia DR3 6652378156475401216

System

TOI-7510

Percentile among Neptune-like cohort

Radius 7.310 R⊕ · percentile 68 / cohort 574

Mass 18.100 M⊕ · percentile 22 / cohort 574

Orbital period 11.53 d · percentile 39 / cohort 524

Distance 249.01 pc · percentile 44 / cohort 572

ESI 0.153 · percentile 15 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

11.531 days

Semi-major axis

0.1019 AU

Eccentricity

0.057

Inclination

90.03 °

Year Length

A year here lasts approximately 11.53 Earth days (3.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1019 AU.

Transit Fingerprint

Depth

0.388 %

Duration

4.814 h

Impact parameter b

0.180

Rp / R★

0.064800

Transit midpoint (BJD)

2,458,656.2137

Photometric dip

Transit produces a flux drop of 3,881 ppm lasting ≈ 4.81 h.

Extended Orbital Architecture

Planet / star radius ratio

0.064800

Semi-major axis / stellar radius

21.270

Impact parameter (b)

0.180

RV semi-amplitude (K)

2.220 m/s

Transit mid-time (BJD)

2,458,656.2137

Long. of periastron (ω)

95.90°

Angular separation (arcsec)

0.40900

Eq. Temperature

878K

(605 °C)

Insolation (S⊕)

1,678.51

Earth = 1.00

Earth Similarity (ESI)

0.153

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

Discovery Paper

Primary reference

Almenara et al. 2025

Instrument

TESS CCD Array

Publication

2025-11

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-7510

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,720 K — cooler than the Sun (5,778 K)

Estimated Age

4.40 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.035 R☉

Stellar Mass

1.063 M☉

Metallicity [Fe/H]

0.25

Extended Stellar Properties

Surface gravity (log g)

4.439 dex

Stellar density

1.372 g/cm³

Rotational v·sin i

3.20 km/s

Metallicity ratio

[m/H]

Distance

249.01 parsec

Light-years 812.15 ly

V-band magnitude

11.99 mag

Voyager-speed travel 14,322,229 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

3.988 mas

Total Proper Motion

20.876 mas/yr

PM Right Ascension

19.86 mas/yr

PM Declination

6.45 mas/yr

Galactic Cartesian (pc)

x = 0.038 · y = -0.580 · z = -0.813

Equatorial (J2000)

RA 273.72819° · Dec -54.43405°

Galactic ℓ, b

339.789° · -16.784°

Ecliptic λ, β

272.526° · -31.028°

HTM-20 index

-353674007