Key parameters at a glance

A radius of 2.64 Earth radii
A mass of 6.07 Earth masses
Surface gravity around 0.87 g
An orbital period of 18.801 days
Semi-major axis 0.1400 AU
Equilibrium temperature 737 K (464 °C)
Distance from Earth 275.72 light-years
Earth Similarity Index 0.327
Travel time at Voyager 1 speed 4,862,320 years

5 siblings around TOI-1136

TOI-1136 e shares its host star with 5 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
TOI-1136 b	Super-Earth	1.90	3.50	4.173	1,216	2022
TOI-1136 c	Sub-Neptune	2.88	6.32	6.257	1,062	2022
TOI-1136 d	Neptune-like	4.63	8.35	12.520	843	2022
TOI-1136 e this	Sub-Neptune	2.64	6.07	18.801	737	2022
TOI-1136 f	Sub-Neptune	3.74	9.70	26.321	658	2022
TOI-1136 g	Sub-Neptune	2.53	5.60	39.545	574	2022

TOI-1136 e Planet Profile

Physical Specs

Radius

2.64 R⊕

Radius (Jupiter)

0.235 R♃

Mass

6.07 M⊕

Mass (Jupiter)

0.019 M♃

Density

1.81 g/cm³

Surface Gravity

0.87 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.327

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

#967of 1978

top 48.8%

This planet

2.64R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-1683.01 2.64 R⊕ Kepler-571 b 2.64 R⊕ TOI-421 b 2.64 R⊕

Metric	Earth	TOI-1136 e	Jupiter
Radius (R⊕)	1.00	2.64	11.21
Mass (M⊕)	1.00	6.07	317.83
Density (g/cm³)	5.51	1.81	1.33
Surface Gravity (g)	1.00	0.87	2.53
Insolation (S⊕)	1.00	48.48	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	6.070 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 142276270

Gaia DR2

Gaia DR2 1677343097418015488

Gaia DR3

Gaia DR3 1677343097418015488

System

TOI-1136

Percentile among Sub-Neptune cohort

Radius 2.639 R⊕ · percentile 51 / cohort 1978

Mass 6.070 M⊕ · percentile 26 / cohort 1978

Orbital period 18.80 d · percentile 60 / cohort 1946

Distance 84.54 pc · percentile 18 / cohort 1975

ESI 0.327 · percentile 34 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

18.801 days

Semi-major axis

0.1400 AU

Eccentricity

0.043

Inclination

89.20 °

Year Length

A year here lasts approximately 18.80 Earth days (5.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1400 AU.

Transit Fingerprint

Depth

0.047 %

Duration

4.463 h

Impact parameter b

0.370

Rp / R★

0.024970

Transit midpoint (BJD)

2,458,697.7558

Photometric dip

Transit produces a flux drop of 471 ppm lasting ≈ 4.46 h.

Extended Orbital Architecture

Planet / star radius ratio

0.024970

Semi-major axis / stellar radius

30.810

Impact parameter (b)

0.370

Transit mid-time (BJD)

2,458,697.7558

Long. of periastron (ω)

-67.00°

Angular separation (arcsec)

1.66000

Eq. Temperature

737K

(464 °C)

Insolation (S⊕)

48.48

Earth = 1.00

Earth Similarity (ESI)

0.327

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

Dai et al. 2022

Instrument

TESS CCD Array

Publication

2022-10

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-1136

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,770 K — cooler than the Sun (5,778 K)

Estimated Age

0.70 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.968 R☉

Stellar Mass

1.022 M☉

Metallicity [Fe/H]

0.07

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

1.565 g/cm³

Rotational v·sin i

6.70 km/s

Activity index (log R'HK)

-4.490

Metallicity ratio

[Fe/H]

Distance

84.54 parsec

Light-years 275.72 ly

V-band magnitude

9.53 mag

Voyager-speed travel 4,862,320 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

11.800 mas

Total Proper Motion

10.214 mas/yr

PM Right Ascension

0.94 mas/yr

PM Declination

-10.17 mas/yr

Galactic Cartesian (pc)

x = -0.415 · y = -0.090 · z = 0.905

Equatorial (J2000)

RA 192.18490° · Dec 64.85528°

Galactic ℓ, b

123.400° · 52.271°

Ecliptic λ, β

146.219° · 60.022°

HTM-20 index

1171597118