Key parameters at a glance

A radius of 2.75 Earth radii
A mass of 8.00 Earth masses
Surface gravity around 1.06 g
An orbital period of 7.994 days
Equilibrium temperature 1,023 K (750 °C)
Distance from Earth 349.37 light-years
Earth Similarity Index 0.235
Travel time at Voyager 1 speed 6,161,171 years

TOI-2545 b Planet Profile

Physical Specs

Radius

2.75 R⊕

Radius (Jupiter)

0.245 R♃

Mass

8.00 M⊕

Mass (Jupiter)

0.025 M♃

Density

2.11 g/cm³

Surface Gravity

1.06 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.235

HZ Position Inner

Controversial No

Discovery

Year 2022

Method Transit

Facility Transiting Exoplanet Survey Satellite (TESS)

Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#804of 1978

top 40.6%

This planet

2.75R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

HIP 97166 c 2.75 R⊕ GJ 3779 b 2.75 R⊕ Kepler-304 d 2.75 R⊕

Metric	Earth	TOI-2545 b	Jupiter
Radius (R⊕)	1.00	2.75	11.21
Mass (M⊕)	1.00	8.00	317.83
Density (g/cm³)	5.51	2.11	1.33
Surface Gravity (g)	1.00	1.06	2.53
Insolation (S⊕)	1.00	258.82	0.037

Star Catalogue Identifiers

TIC

TIC 149845414

Gaia DR2

Gaia DR2 5762607889340459008

Gaia DR3

Gaia DR3 5762607889340459008

System

TOI-2545

Percentile among Sub-Neptune cohort

Radius 2.750 R⊕ · percentile 59 / cohort 1978

Mass 8.000 M⊕ · percentile 54 / cohort 1978

Orbital period 7.99 d · percentile 26 / cohort 1946

Distance 107.12 pc · percentile 21 / cohort 1975

ESI 0.235 · percentile 13 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

7.994 days

Semi-major axis

— AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts approximately 7.99 Earth days (2.2% of a terrestrial year).

Transit Fingerprint

Depth

0.040 %

Duration

4.271 h

Transit midpoint (BJD)

2,458,522.5140

Photometric dip

Transit produces a flux drop of 405 ppm lasting ≈ 4.27 h.

Eq. Temperature

1,023K

(750 °C)

Insolation (S⊕)

258.82

Earth = 1.00

Earth Similarity (ESI)

0.235

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Mantovan et al. 2022

Instrument

TESS CCD Array

Publication

2022-11

Observation locale

Space

Discovery cohort

Planets confirmed in 2022 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).

TOI-1452 b · Super-Earth TOI-712 d · Sub-Neptune TOI-1468 c · Sub-Neptune TOI-2136 b · Sub-Neptune LTT 1445 A c · Rocky Terrestrial TOI-712 c · Sub-Neptune LP 890-9 b · Super-Earth TOI-2081 b · Sub-Neptune GJ 3929 b · Rocky Terrestrial HD 260655 c · Super-Earth HD 73583 c · Sub-Neptune TOI-1759 b · Sub-Neptune

Host System: TOI-2545

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,846 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.253 R☉

Stellar Mass

1.055 M☉

Metallicity [Fe/H]

-0.27

Extended Stellar Properties

Surface gravity (log g)

4.265 dex

Stellar density

0.756 g/cm³

Metallicity ratio

[M/H]

Distance

107.12 parsec

Light-years 349.37 ly

V-band magnitude

9.52 mag

Voyager-speed travel 6,161,171 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

9.307 mas

Total Proper Motion

18.676 mas/yr

PM Right Ascension

-14.64 mas/yr

PM Declination

-11.60 mas/yr

Galactic Cartesian (pc)

x = -0.713 · y = 0.699 · z = -0.060

Equatorial (J2000)

RA 135.54580° · Dec -3.42082°

Galactic ℓ, b

232.517° · 26.908°

Ecliptic λ, β

139.076° · -19.440°

HTM-20 index

-673993297