Key parameters at a glance

A radius of 0.79 Earth radii
A mass of 0.42 Earth masses
Surface gravity around 0.67 g
An orbital period of 4.161 days
Semi-major axis 0.0484 AU
Equilibrium temperature 985 K (712 °C)
Distance from Earth 1,763.21 light-years
Earth Similarity Index 0.308
Travel time at Voyager 1 speed 31,094,249 years

Kepler-1235 b Planet Profile

Physical Specs

Radius

0.79 R⊕

Radius (Jupiter)

0.070 R♃

Mass

0.42 M⊕

Mass (Jupiter)

0.001 M♃

Density

4.66 g/cm³

Surface Gravity

0.67 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.308

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#488of 570

top 85.4%

This planet

0.79R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1566 b 0.79 R⊕ Kepler-1222 b 0.79 R⊕ Kepler-390 c 0.79 R⊕

Metric	Earth	Kepler-1235 b	Jupiter
Radius (R⊕)	1.00	0.79	11.21
Mass (M⊕)	1.00	0.42	317.83
Density (g/cm³)	5.51	4.66	1.33
Surface Gravity (g)	1.00	0.67	2.53
Insolation (S⊕)	1.00	265.33	0.037

Star Catalogue Identifiers

TIC

TIC 164830167

Gaia DR2

Gaia DR2 2105848204973534592

Gaia DR3

Gaia DR3 2105848204973534592

System

Kepler-1235

Percentile among Rocky Terrestrial cohort

Radius 0.790 R⊕ · percentile 14 / cohort 570

Mass 0.418 M⊕ · percentile 12 / cohort 570

Orbital period 4.16 d · percentile 46 / cohort 567

Distance 540.60 pc · percentile 68 / cohort 566

ESI 0.308 · percentile 41 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

4.161 days

Semi-major axis

0.0484 AU

Eccentricity

0.000

Inclination

89.68 °

Year Length

A year here lasts approximately 4.16 Earth days (1.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0484 AU.

Transit Fingerprint

Depth

0.008 %

Duration

2.615 h

Impact parameter b

0.115

Rp / R★

0.007676

Transit midpoint (BJD)

2,454,965.2738

Photometric dip

Transit produces a flux drop of 76 ppm lasting ≈ 2.62 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007676

Semi-major axis / stellar radius

12.260

Impact parameter (b)

0.115

Transit mid-time (BJD)

2,454,965.2738

Angular separation (arcsec)

0.08950

Eq. Temperature

985K

(712 °C)

Insolation (S⊕)

265.33

Earth = 1.00

Earth Similarity (ESI)

0.308

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-1235

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,541 K — cooler than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.900 R☉

Stellar Mass

0.930 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

1.100 g/cm³

Metallicity ratio

[Fe/H]

Distance

540.60 parsec

Light-years 1,763.21 ly

V-band magnitude

14.08 mag

Voyager-speed travel 31,094,249 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.821 mas

Total Proper Motion

26.723 mas/yr

PM Right Ascension

9.10 mas/yr

PM Declination

25.13 mas/yr

Galactic Cartesian (pc)

x = 0.185 · y = -0.696 · z = 0.694

Equatorial (J2000)

RA 284.90307° · Dec 43.95406°

Galactic ℓ, b

74.114° · 17.076°

Ecliptic λ, β

297.072° · 65.998°

HTM-20 index

1009230607