Key parameters at a glance

A radius of 14.00 Earth radii
A mass of 214.10 Earth masses
Surface gravity around 1.09 g
An orbital period of 22.265 days
Semi-major axis 0.1541 AU
Distance from Earth 1,229.16 light-years
Earth Similarity Index 0.277
Travel time at Voyager 1 speed 21,676,258 years

2 siblings around KOI-142

KOI-142 c shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
KOI-142 b	Sub-Neptune	3.44	9.50	10.916	758	2013
KOI-142 c this	Gas Giant	14.00	214.10	22.265	—	2013
Kepler-88 d	Gas Giant	13.10	965.15	1,403.000	—	2020

KOI-142 c Planet Profile

Physical Specs

Radius

14.00 R⊕

Radius (Jupiter)

1.250 R♃

Mass

214.10 M⊕

Mass (Jupiter)

0.674 M♃

Density

0.43 g/cm³

Surface Gravity

1.09 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.277

HZ Position Unknown

Controversial No

Discovery

Year 2013

Method Transit Timing Variations

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#415of 1771

top 23.4%

This planet

14.00R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 9446 b 14.00 R⊕ HD 156411 b 14.00 R⊕ HD 224693 b 14.00 R⊕

Metric	Earth	KOI-142 c	Jupiter
Radius (R⊕)	1.00	14.00	11.21
Mass (M⊕)	1.00	214.10	317.83
Density (g/cm³)	5.51	0.43	1.33
Surface Gravity (g)	1.00	1.09	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	214.100 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	207.714 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 122712595

Gaia DR2

Gaia DR2 2101507367429089664

Gaia DR3

Gaia DR3 2101507367429089664

System

KOI-142

Percentile among Gas Giant cohort

Radius 14.000 R⊕ · percentile 74 / cohort 1771

Mass 214.100 M⊕ · percentile 22 / cohort 1747

Orbital period 22.26 d · percentile 48 / cohort 1533

Distance 376.86 pc · percentile 67 / cohort 1759

ESI 0.277 · percentile 51 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

22.265 days

Semi-major axis

0.1541 AU

Eccentricity

0.057

Inclination

93.15 °

Year Length

A year here lasts approximately 22.26 Earth days (6.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1541 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.277

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Nesvorny et al. 2013

Instrument

Kepler CCD Array

Publication

2013-11

Observation locale

Space

Discovery cohort

Planets confirmed in 2013 at Kepler (12 shown).

Kepler-69 c · Super-Earth Kepler-61 b · Sub-Neptune Kepler-62 e · Super-Earth KOI-351 f · Sub-Neptune Kepler-62 f · Super-Earth KOI-351 e · Sub-Neptune Kepler-1704 b · Gas Giant Kepler-37 d · Sub-Neptune Kepler-282 e · Sub-Neptune KOI-351 h · Gas Giant KOI-351 d · Sub-Neptune Kepler-114 c · Super-Earth

Host System: KOI-142

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,466 K — cooler than the Sun (5,778 K)

Estimated Age

1.60 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.897 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

0.27

Extended Stellar Properties

Surface gravity (log g)

4.528 dex

Stellar density

1.340 g/cm³

Systemic radial velocity

-20.45 km/s

Rotational v·sin i

1.80 km/s

Metallicity ratio

[Fe/H]

Distance

376.86 parsec

Light-years 1,229.16 ly

V-band magnitude

13.21 mag

Voyager-speed travel 21,676,258 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.625 mas

Total Proper Motion

5.086 mas/yr

PM Right Ascension

1.11 mas/yr

PM Declination

4.96 mas/yr

Galactic Cartesian (pc)

x = 0.274 · y = -0.707 · z = 0.652

Equatorial (J2000)

RA 291.14810° · Dec 40.66941°

Galactic ℓ, b

72.935° · 11.528°

Ecliptic λ, β

305.066° · 61.559°

HTM-20 index

1617973644