Key parameters at a glance

A radius of 1.82 Earth radii
A mass of 3.97 Earth masses
Surface gravity around 1.20 g
An orbital period of 7.011 days
Semi-major axis 0.0771 AU
Equilibrium temperature 1,453 K (1180 °C)
Distance from Earth 4,395.02 light-years
Earth Similarity Index 0.184
Travel time at Voyager 1 speed 77,506,126 years

Kepler-1225 b Planet Profile

Physical Specs

Radius

1.82 R⊕

Radius (Jupiter)

0.162 R♃

Mass

3.97 M⊕

Mass (Jupiter)

0.013 M♃

Density

3.62 g/cm³

Surface Gravity

1.20 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.184

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

#235of 1176

top 19.9%

This planet

1.82R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-283 c 1.82 R⊕ Kepler-1262 b 1.82 R⊕ Kepler-113 b 1.82 R⊕

Metric	Earth	Kepler-1225 b	Jupiter
Radius (R⊕)	1.00	1.82	11.21
Mass (M⊕)	1.00	3.97	317.83
Density (g/cm³)	5.51	3.62	1.33
Surface Gravity (g)	1.00	1.20	2.53
Insolation (S⊕)	1.00	324.28	0.037

Star Catalogue Identifiers

TIC

TIC 122595850

Gaia DR2

Gaia DR2 2101123534792103168

Gaia DR3

Gaia DR3 2101123534792103168

System

Kepler-1225

Percentile among Super-Earth cohort

Radius 1.820 R⊕ · percentile 79 / cohort 1176

Mass 3.970 M⊕ · percentile 72 / cohort 1176

Orbital period 7.01 d · percentile 52 / cohort 1164

Distance 1,347.52 pc · percentile 92 / cohort 1171

ESI 0.184 · percentile 9 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

7.011 days

Semi-major axis

0.0771 AU

Eccentricity

0.000

Inclination

88.92 °

Year Length

A year here lasts approximately 7.01 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0771 AU.

Transit Fingerprint

Depth

0.022 %

Duration

2.152 h

Impact parameter b

0.910

Rp / R★

0.013880

Transit midpoint (BJD)

2,454,971.4007

Photometric dip

Transit produces a flux drop of 223 ppm lasting ≈ 2.15 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013880

Semi-major axis / stellar radius

24.530

Impact parameter (b)

0.910

Transit mid-time (BJD)

2,454,971.4007

Angular separation (arcsec)

0.05720

Eq. Temperature

1,453K

(1180 °C)

Insolation (S⊕)

324.28

Earth = 1.00

Earth Similarity (ESI)

0.184

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-1225

Spectral Class

F-type yellow-white

Effective Temperature

6,140 K — hotter than the Sun (5,778 K)

Estimated Age

3.02 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.190 R☉

Stellar Mass

1.130 M☉

Metallicity [Fe/H]

0.01

Extended Stellar Properties

Surface gravity (log g)

4.340 dex

Stellar density

5.680 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,347.52 parsec

Light-years 4,395.02 ly

V-band magnitude

14.82 mag

Voyager-speed travel 77,506,126 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.714 mas

Total Proper Motion

8.558 mas/yr

PM Right Ascension

-3.79 mas/yr

PM Declination

-7.67 mas/yr

Galactic Cartesian (pc)

x = 0.269 · y = -0.715 · z = 0.645

Equatorial (J2000)

RA 290.63327° · Dec 40.13697°

Galactic ℓ, b

72.271° · 11.648°

Ecliptic λ, β

303.956° · 61.166°

HTM-20 index

1370685220