Key parameters at a glance

A radius of 1.67 Earth radii
A mass of 4.82 Earth masses
Surface gravity around 1.72 g
An orbital period of 11.062 days
Semi-major axis 0.0610 AU
Equilibrium temperature 326 K (53 °C)
Distance from Earth 99.55 light-years
Earth Similarity Index 0.831
Travel time at Voyager 1 speed 1,755,506 years
Almost certainly tidally locked to its host star given the close orbit

Context from the literature

TOI-1452 b is a confirmed super-Earth exoplanet, possibly a water world, orbiting a red-dwarf star TOI-1452 about 100 light-years away in the Draco constellation. The exoplanet is about 70% larger in diameter than Earth, and roughly five times as massive.

Excerpted from Wikipedia · full article

TOI-1452 b Planet Profile

Physical Specs

Radius

1.67 R⊕

Radius (Jupiter)

0.149 R♃

Mass

4.82 M⊕

Mass (Jupiter)

0.015 M♃

Density

5.60 g/cm³

Surface Gravity

1.72 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.831

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

#450of 1176

top 38.2%

This planet

1.67R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-1802 b 1.67 R⊕ HD 3167 b 1.67 R⊕ Kepler-288 b 1.67 R⊕

Metric	Earth	TOI-1452 b	Jupiter
Radius (R⊕)	1.00	1.67	11.21
Mass (M⊕)	1.00	4.82	317.83
Density (g/cm³)	5.51	5.60	1.33
Surface Gravity (g)	1.00	1.72	2.53
Insolation (S⊕)	1.00	1.80	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4.820 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 420112589

Gaia DR2

Gaia DR2 2264839957167921024

Gaia DR3

Gaia DR3 2264839957167921024

System

TOI-1452

Percentile among Super-Earth cohort

Radius 1.672 R⊕ · percentile 62 / cohort 1176

Mass 4.820 M⊕ · percentile 92 / cohort 1176

Orbital period 11.06 d · percentile 67 / cohort 1164

Distance 30.52 pc · percentile 6 / cohort 1171

ESI 0.831 · percentile 92 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

11.062 days

Semi-major axis

0.0610 AU

Eccentricity

0.000

Inclination

89.77 °

Year Length

A year here lasts approximately 11.06 Earth days (3.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0610 AU.

Transit Fingerprint

Depth

0.309 %

Duration

1.759 h

Impact parameter b

0.190

Transit midpoint (BJD)

2,458,691.5321

Photometric dip

Transit produces a flux drop of 3,090 ppm lasting ≈ 1.76 h.

Extended Orbital Architecture

Impact parameter (b)

0.190

RV semi-amplitude (K)

3.500 m/s

Transit mid-time (BJD)

2,458,691.5321

Long. of periastron (ω)

90.00°

Angular separation (arcsec)

2.00000

Eq. Temperature

326K

(53 °C)

Insolation (S⊕)

1.80

Earth = 1.00

Earth Similarity (ESI)

0.831

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure. Close-orbiting tidally-locked around a cool host.

Detection Signatures

Transit photometry

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

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Cadieux et al. 2022

Instrument

TESS CCD Array

Publication

2022-09

Observation locale

Space

Discovery cohort

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

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 TOI-1246 e · Sub-Neptune

Host System: TOI-1452

Spectral Class

M-type red dwarf

Effective Temperature

3,185 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.275 R☉

Stellar Mass

0.249 M☉

Metallicity [Fe/H]

-0.07

Extended Stellar Properties

Surface gravity (log g)

4.950 dex

Stellar density

16.800 g/cm³

Metallicity ratio

[M/H]

Distance

30.52 parsec

Light-years 99.55 ly

V-band magnitude

14.35 mag

Voyager-speed travel 1,755,506 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

32.735 mas

Total Proper Motion

74.327 mas/yr

PM Right Ascension

7.83 mas/yr

PM Declination

-73.91 mas/yr

Galactic Cartesian (pc)

x = 0.100 · y = -0.271 · z = 0.957

Equatorial (J2000)

RA 290.17397° · Dec 73.19511°

Galactic ℓ, b

104.665° · 23.813°

Ecliptic λ, β

52.890° · 80.487°

HTM-20 index

-2076845871

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