Key parameters at a glance

A radius of 1.25 Earth radii
A mass of 2.10 Earth masses
Surface gravity around 1.34 g
An orbital period of 0.371 days
Semi-major axis 0.0064 AU
Equilibrium temperature 1,060 K (787 °C)
Distance from Earth 158.45 light-years
Earth Similarity Index 0.290
Travel time at Voyager 1 speed 2,794,320 years
Almost certainly tidally locked to its host star given the close orbit

TOI-2445 b Planet Profile

Physical Specs

Radius

1.25 R⊕

Radius (Jupiter)

0.112 R♃

Mass

2.10 M⊕

Mass (Jupiter)

0.007 M♃

Density

5.91 g/cm³

Surface Gravity

1.34 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.290

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

#1161of 1176

top 98.6%

This planet

1.25R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-445 d 1.25 R⊕ Kepler-1074 b 1.25 R⊕ Kepler-150 b 1.25 R⊕

Metric	Earth	TOI-2445 b	Jupiter
Radius (R⊕)	1.00	1.25	11.21
Mass (M⊕)	1.00	2.10	317.83
Density (g/cm³)	5.51	5.91	1.33
Surface Gravity (g)	1.00	1.34	2.53
Insolation (S⊕)	1.00	204.49	0.037

Star Catalogue Identifiers

TIC

TIC 439867639

Gaia DR2

Gaia DR2 2498140931418172416

Gaia DR3

Gaia DR3 2498140931418172416

System

TOI-2445

Percentile among Super-Earth cohort

Radius 1.250 R⊕ · percentile 0 / cohort 1176

Mass 2.100 M⊕ · percentile 2 / cohort 1176

Orbital period 0.37 d · percentile 0 / cohort 1164

Distance 48.58 pc · percentile 11 / cohort 1171

ESI 0.290 · percentile 34 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

0.371 days

Semi-major axis

0.0064 AU

Eccentricity

—

Inclination

— °

Year Length

A year here lasts roughly 8.9 hours long at a mean orbital distance of 0.0064 AU.

Transit Fingerprint

Depth

0.232 %

Duration

0.492 h

Impact parameter b

0.270

Transit midpoint (BJD)

2,459,144.5697

Photometric dip

Transit produces a flux drop of 2,323 ppm lasting ≈ 0.49 h.

Eq. Temperature

1,060K

(787 °C)

Insolation (S⊕)

204.49

Earth = 1.00

Earth Similarity (ESI)

0.290

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.

Discovery Paper

Primary reference

Giacalone et al. 2022

Instrument

TESS CCD Array

Publication

2022-02

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-2445

Spectral Class

M-type red dwarf

Effective Temperature

3,333 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.270 R☉

Stellar Mass

0.250 M☉

Metallicity [Fe/H]

—

Distance

48.58 parsec

Light-years 158.45 ly

V-band magnitude

15.69 mag

Voyager-speed travel 2,794,320 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

20.556 mas

Total Proper Motion

62.062 mas/yr

PM Right Ascension

57.21 mas/yr

PM Declination

-24.05 mas/yr

Galactic Cartesian (pc)

x = 0.728 · y = 0.686 · z = 0.001

Equatorial (J2000)

RA 43.31616° · Dec 0.05234°

Galactic ℓ, b

175.083° · -50.064°

Ecliptic λ, β

40.875° · -15.786°

HTM-20 index

616532745