Confirmed Exoplanet Discovered 2022

TOI-1136 c

A sub-neptune orbiting the g-type yellow (sun-like) TOI-1136, located approximately 275.7 light-years from Earth.

Key parameters at a glance

  • A radius of 2.88 Earth radii
  • A mass of 6.32 Earth masses
  • Surface gravity around 0.76 g
  • An orbital period of 6.257 days
  • Semi-major axis 0.0669 AU
  • Equilibrium temperature 1,062 K (789 °C)
  • Distance from Earth 275.72 light-years
  • Earth Similarity Index 0.211
  • Travel time at Voyager 1 speed 4,862,320 years

5 siblings around TOI-1136

TOI-1136 c 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 this 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 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 c Planet Profile

Physical Specs

Radius
2.88 R⊕
Radius (Jupiter)
0.257 R♃
Mass
6.32 M⊕
Mass (Jupiter)
0.020 M♃
Density
1.45 g/cm³
Surface Gravity
0.76 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.211
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

#657of 1978

top 33.2%

This planet

2.88R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

K2-378 b 2.88 R⊕ Kepler-178 c 2.88 R⊕ KOI-351 f 2.88 R⊕
Metric Earth TOI-1136 c Jupiter
Radius (R⊕)1.002.8811.21
Mass (M⊕)1.006.32317.83
Density (g/cm³)5.511.451.33
Surface Gravity (g)1.000.762.53
Insolation (S⊕)1.00232.390.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 6.320 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 2.879 R⊕ · percentile 67 / cohort 1978
Mass 6.320 M⊕ · percentile 31 / cohort 1978
Orbital period 6.26 d · percentile 18 / cohort 1946
Distance 84.54 pc · percentile 18 / cohort 1975
ESI 0.211 · percentile 9 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period
6.257 days
Semi-major axis
0.0669 AU
Eccentricity
0.110
Inclination
88.80 °

Year Length

A year here lasts approximately 6.26 Earth days (1.7% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0669 AU.

Transit Fingerprint

Depth

0.081 %

Duration

3.488 h

Impact parameter b

0.150

Rp / R★

0.027250

Transit midpoint (BJD)

2,460,366.0265

Photometric dip

Transit produces a flux drop of 813 ppm lasting ≈ 3.49 h.

Extended Orbital Architecture

Planet / star radius ratio

0.027250

Semi-major axis / stellar radius

14.800

Impact parameter (b)

0.150

RV semi-amplitude (K)

2.600 m/s

Transit mid-time (BJD)

2,460,366.0265

Long. of periastron (ω)

70.00°

Angular separation (arcsec)

0.79100

Eq. Temperature

1,062K

(789 °C)

Insolation (S⊕)

232.39

Earth = 1.00

Earth Similarity (ESI)

0.211

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.

Radial velocity

Stellar wobble has been measured spectroscopically.

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

8.010.210.16B9.53V9.37Gaia8.94TESS8.36J8.09H8.03K7.95W17.99W27.96W38.04W4

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

Similar Worlds

Kepler-178 c

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.88 R⊕ · 2,335.4 ly

Kepler-297 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.87 R⊕ · 2,257.5 ly

Kepler-11 c

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.87 R⊕ · 2,108.1 ly

Kepler-1011 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.87 R⊕ · 2,403.0 ly

Kepler-593 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.87 R⊕ · 3,176.0 ly

Kepler-921 b

Sub-Neptune · G-type yellow (Sun-like)

Radius 2.87 R⊕ · 3,047.9 ly

Explore Related Categories

Sub-Neptune Planets Transit Discoveries Transiting Exoplanet Survey Satellite (TESS) Mission G-type yellow (Sun-like) Hosts