Key parameters at a glance

A radius of 1.41 Earth radii
A mass of 2.57 Earth masses
Surface gravity around 1.29 g
An orbital period of 1.078 days
Semi-major axis 0.0196 AU
Equilibrium temperature 1,667 K (1394 °C)
Distance from Earth 2,278.15 light-years
Earth Similarity Index 0.170
Travel time at Voyager 1 speed 40,175,186 years

Kepler-1205 b Planet Profile

Physical Specs

Radius

1.41 R⊕

Radius (Jupiter)

0.126 R♃

Mass

2.57 M⊕

Mass (Jupiter)

0.008 M♃

Density

5.04 g/cm³

Surface Gravity

1.29 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.170

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

#902of 1176

top 76.6%

This planet

1.41R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-369 c 1.41 R⊕ Kepler-334 d 1.41 R⊕ Kepler-141 c 1.41 R⊕

Metric	Earth	Kepler-1205 b	Jupiter
Radius (R⊕)	1.00	1.41	11.21
Mass (M⊕)	1.00	2.57	317.83
Density (g/cm³)	5.51	5.04	1.33
Surface Gravity (g)	1.00	1.29	2.53
Insolation (S⊕)	1.00	1,038.49	0.037

Star Catalogue Identifiers

TIC

TIC 122443195

Gaia DR2

Gaia DR2 2101798634930170240

Gaia DR3

Gaia DR3 2101798634930170240

System

Kepler-1205

Percentile among Super-Earth cohort

Radius 1.410 R⊕ · percentile 22 / cohort 1176

Mass 2.570 M⊕ · percentile 21 / cohort 1176

Orbital period 1.08 d · percentile 7 / cohort 1164

Distance 698.49 pc · percentile 61 / cohort 1171

ESI 0.170 · percentile 7 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

1.078 days

Semi-major axis

0.0196 AU

Eccentricity

0.000

Inclination

76.41 °

Year Length

A year here lasts approximately 1.08 Earth days (0.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0196 AU.

Transit Fingerprint

Depth

0.033 %

Duration

1.230 h

Impact parameter b

0.860

Rp / R★

0.016308

Transit midpoint (BJD)

2,454,966.2498

Photometric dip

Transit produces a flux drop of 326 ppm lasting ≈ 1.23 h.

Extended Orbital Architecture

Planet / star radius ratio

0.016308

Semi-major axis / stellar radius

6.744

Impact parameter (b)

0.860

Transit mid-time (BJD)

2,454,966.2498

Angular separation (arcsec)

0.02810

Eq. Temperature

1,667K

(1394 °C)

Insolation (S⊕)

1,038.49

Earth = 1.00

Earth Similarity (ESI)

0.170

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-1205

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,226 K — cooler than the Sun (5,778 K)

Estimated Age

4.90 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.810 R☉

Stellar Mass

0.840 M☉

Metallicity [Fe/H]

-0.04

Extended Stellar Properties

Surface gravity (log g)

4.560 dex

Stellar density

4.989 g/cm³

Metallicity ratio

[Fe/H]

Distance

698.49 parsec

Light-years 2,278.15 ly

V-band magnitude

15.32 mag

Voyager-speed travel 40,175,186 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.403 mas

Total Proper Motion

3.421 mas/yr

PM Right Ascension

-2.41 mas/yr

PM Declination

2.43 mas/yr

Galactic Cartesian (pc)

x = 0.260 · y = -0.702 · z = 0.663

Equatorial (J2000)

RA 290.27967° · Dec 41.51505°

Galactic ℓ, b

73.424° · 12.484°

Ecliptic λ, β

304.275° · 62.562°

HTM-20 index

318441953