Key parameters at a glance

A radius of 4.03 Earth radii
A mass of 23.20 Earth masses
Surface gravity around 1.43 g
An orbital period of 5.186 days
Semi-major axis 0.0632 AU
Equilibrium temperature 1,365 K (1092 °C)
Distance from Earth 431.22 light-years
Earth Similarity Index 0.154
Travel time at Voyager 1 speed 7,604,633 years

1 sibling around TOI-4495

TOI-4495 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
TOI-4495 b	Sub-Neptune	2.48	7.70	2.567	1,735	2026
TOI-4495 c this	Neptune-like	4.03	23.20	5.186	1,365	2024

TOI-4495 c Planet Profile

Physical Specs

Radius

4.03 R⊕

Radius (Jupiter)

0.360 R♃

Mass

23.20 M⊕

Mass (Jupiter)

0.073 M♃

Density

1.90 g/cm³

Surface Gravity

1.43 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.154

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

#564of 574

top 98.1%

This planet

4.03R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

K2-7 b 4.04 R⊕ K2-360 c 4.02 R⊕ Kepler-33 e 4.02 R⊕

Metric	Earth	TOI-4495 c	Jupiter
Radius (R⊕)	1.00	4.03	11.21
Mass (M⊕)	1.00	23.20	317.83
Density (g/cm³)	5.51	1.90	1.33
Surface Gravity (g)	1.00	1.43	2.53
Insolation (S⊕)	1.00	346.63	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	23.200 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 120826158

Gaia DR2

Gaia DR2 2099011888349441536

Gaia DR3

Gaia DR3 2099011888349441536

System

TOI-4495

Percentile among Neptune-like cohort

Radius 4.030 R⊕ · percentile 2 / cohort 574

Mass 23.200 M⊕ · percentile 38 / cohort 574

Orbital period 5.19 d · percentile 21 / cohort 524

Distance 132.21 pc · percentile 30 / cohort 572

ESI 0.154 · percentile 15 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

5.186 days

Semi-major axis

0.0632 AU

Eccentricity

0.023

Inclination

86.80 °

Year Length

A year here lasts approximately 5.19 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0632 AU.

Transit Fingerprint

Depth

0.067 %

Duration

2.783 h

Impact parameter b

0.595

Rp / R★

0.028920

Transit midpoint (BJD)

2,458,687.8395

Photometric dip

Transit produces a flux drop of 670 ppm lasting ≈ 2.78 h.

Extended Orbital Architecture

Planet / star radius ratio

0.028920

Semi-major axis / stellar radius

10.630

Impact parameter (b)

0.595

Transit mid-time (BJD)

2,458,687.8395

Sky-projected obliquity (λ)

-2.30°

True obliquity (ψ)

39.00°

Angular separation (arcsec)

0.47800

Eq. Temperature

1,365K

(1092 °C)

Insolation (S⊕)

346.63

Earth = 1.00

Earth Similarity (ESI)

0.154

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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

Hord 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-4495

Spectral Class

F-type yellow-white

Effective Temperature

6,210 K — hotter than the Sun (5,778 K)

Estimated Age

1.90 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.309 R☉

Stellar Mass

1.247 M☉

Metallicity [Fe/H]

0.18

Extended Stellar Properties

Surface gravity (log g)

4.290 dex

Stellar density

0.770 g/cm³

Rotational v·sin i

6.80 km/s

Rotation period

10.20 days

Metallicity ratio

[Fe/H]

Distance

132.21 parsec

Light-years 431.22 ly

V-band magnitude

9.53 mag

Voyager-speed travel 7,604,633 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

7.535 mas

Total Proper Motion

28.033 mas/yr

PM Right Ascension

12.30 mas/yr

PM Declination

-25.19 mas/yr

Galactic Cartesian (pc)

x = 0.225 · y = -0.766 · z = 0.602

Equatorial (J2000)

RA 286.36250° · Dec 37.02599°

Galactic ℓ, b

67.942° · 13.366°

Ecliptic λ, β

295.891° · 59.003°

HTM-20 index

896269903