Key parameters at a glance

A radius of 3.66 Earth radii
A mass of 19.80 Earth masses
Surface gravity around 1.48 g
An orbital period of 4.075 days
Semi-major axis 0.0453 AU
Equilibrium temperature 825 K (552 °C)
Distance from Earth 190.02 light-years
Earth Similarity Index 0.279
Travel time at Voyager 1 speed 3,351,028 years
Almost certainly tidally locked to its host star given the close orbit

1 sibling around TOI-1130

TOI-1130 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
TOI-1130 b this	Sub-Neptune	3.66	19.80	4.075	825	2020
TOI-1130 c	Gas Giant	13.00	336.00	8.350	650	2020

TOI-1130 b Planet Profile

Physical Specs

Radius

3.66 R⊕

Radius (Jupiter)

0.327 R♃

Mass

19.80 M⊕

Mass (Jupiter)

0.062 M♃

Density

2.23 g/cm³

Surface Gravity

1.48 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.279

HZ Position Inner

Controversial No

Discovery

Year 2020

Method Transit

Facility Transiting Exoplanet Survey Satellite (TESS)

Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#107of 1978

top 5.4%

This planet

3.66R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

GJ 27.1 b 3.66 R⊕ TOI-1691 b 3.66 R⊕ HD 211970 b 3.66 R⊕

Metric	Earth	TOI-1130 b	Jupiter
Radius (R⊕)	1.00	3.66	11.21
Mass (M⊕)	1.00	19.80	317.83
Density (g/cm³)	5.51	2.23	1.33
Surface Gravity (g)	1.00	1.48	2.53
Insolation (S⊕)	1.00	78.10	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	19.800 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 254113311

Gaia DR2

Gaia DR2 6715688452614516736

Gaia DR3

Gaia DR3 6715688452614516736

System

TOI-1130

Percentile among Sub-Neptune cohort

Radius 3.660 R⊕ · percentile 94 / cohort 1978

Mass 19.800 M⊕ · percentile 95 / cohort 1978

Orbital period 4.07 d · percentile 8 / cohort 1946

Distance 58.26 pc · percentile 13 / cohort 1975

ESI 0.279 · percentile 23 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

4.075 days

Semi-major axis

0.0453 AU

Eccentricity

0.052

Inclination

87.49 °

Year Length

A year here lasts approximately 4.07 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0453 AU.

Transit Fingerprint

Depth

0.265 %

Duration

1.837 h

Impact parameter b

-0.518

Rp / R★

0.048000

Transit midpoint (BJD)

2,458,658.7463

Photometric dip

Transit produces a flux drop of 2,650 ppm lasting ≈ 1.84 h.

Extended Orbital Architecture

Planet / star radius ratio

0.048000

Semi-major axis / stellar radius

13.770

Impact parameter (b)

-0.518

RV semi-amplitude (K)

9.670 m/s

Transit mid-time (BJD)

2,458,658.7463

Long. of periastron (ω)

141.11°

Angular separation (arcsec)

0.77800

Eq. Temperature

825K

(552 °C)

Insolation (S⊕)

78.10

Earth = 1.00

Earth Similarity (ESI)

0.279

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. 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.

Transit timing variations

Gravitational interactions from neighbours have been detected.

Discovery Paper

Primary reference

Huang et al. 2020

Instrument

TESS CCD Array

Publication

2020-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2020 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).

TOI-700 d · Rocky Terrestrial TOI-237 b · Super-Earth TOI-700 b · Rocky Terrestrial TOI-1266 c · Super-Earth LTT 3780 c · Sub-Neptune TOI-700 c · Sub-Neptune TOI-776 c · Sub-Neptune TOI-942 c · Neptune-like TOI-776 b · Super-Earth TOI-1266 b · Sub-Neptune TOI-540 b · Rocky Terrestrial LHS 1815 b · Rocky Terrestrial

Host System: TOI-1130

Spectral Class

K-type orange

Effective Temperature

4,360 K — cooler than the Sun (5,778 K)

Estimated Age

5.40 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.697 R☉

Stellar Mass

0.745 M☉

Metallicity [Fe/H]

0.11

Extended Stellar Properties

Surface gravity (log g)

4.550 dex

Stellar density

3.102 g/cm³

Systemic radial velocity

-9.52 km/s

Rotational v·sin i

2.50 km/s

Rotation period

25.60 days

Metallicity ratio

[Fe/H]

Distance

58.26 parsec

Light-years 190.02 ly

V-band magnitude

11.60 mag

Voyager-speed travel 3,351,028 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

17.136 mas

Total Proper Motion

29.932 mas/yr

PM Right Ascension

12.54 mas/yr

PM Declination

-27.18 mas/yr

Galactic Cartesian (pc)

x = 0.211 · y = -0.719 · z = -0.662

Equatorial (J2000)

RA 286.37600° · Dec -41.43764°

Galactic ℓ, b

355.729° · -20.041°

Ecliptic λ, β

282.892° · -18.729°

HTM-20 index

-1742104453

Similar Worlds

HD 211970 b

Sub-Neptune · K-type orange

Radius 3.66 R⊕ · 42.8 ly

TOI-3082 b

Sub-Neptune · K-type orange

Radius 3.66 R⊕ · 368.7 ly

Kepler-967 c

Sub-Neptune · K-type orange

Radius 3.65 R⊕ · 1,854.3 ly

TOI-2088 b

Sub-Neptune · K-type orange

Radius 3.68 R⊕ · 412.5 ly

HD 104067 c

Sub-Neptune · K-type orange

Radius 3.69 R⊕ · 66.4 ly

TOI-1758 b

Sub-Neptune · K-type orange

Radius 3.62 R⊕ · 315.1 ly

Explore Related Categories

Sub-Neptune Planets Transit Discoveries Transiting Exoplanet Survey Satellite (TESS) Mission K-type orange Hosts