Key parameters at a glance

A radius of 1.15 Earth radii
A mass of 1.60 Earth masses
Surface gravity around 1.21 g
An orbital period of 4.243 days
Semi-major axis 0.0481 AU
Equilibrium temperature 926 K (653 °C)
Distance from Earth 2,258.94 light-years
Earth Similarity Index 0.342
Travel time at Voyager 1 speed 39,836,350 years

Kepler-1553 b Planet Profile

Physical Specs

Radius

1.15 R⊕

Radius (Jupiter)

0.103 R♃

Mass

1.60 M⊕

Mass (Jupiter)

0.005 M♃

Density

5.78 g/cm³

Surface Gravity

1.21 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.342

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

#160of 570

top 27.9%

This planet

1.15R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-339 c 1.15 R⊕ Kepler-1240 b 1.15 R⊕ Kepler-1468 c 1.15 R⊕

Metric	Earth	Kepler-1553 b	Jupiter
Radius (R⊕)	1.00	1.15	11.21
Mass (M⊕)	1.00	1.60	317.83
Density (g/cm³)	5.51	5.78	1.33
Surface Gravity (g)	1.00	1.21	2.53
Insolation (S⊕)	1.00	166.11	0.037

Star Catalogue Identifiers

TIC

TIC 351062058

Gaia DR2

Gaia DR2 2052775191022506112

Gaia DR3

Gaia DR3 2052775191022506112

System

Kepler-1553

Percentile among Rocky Terrestrial cohort

Radius 1.150 R⊕ · percentile 71 / cohort 570

Mass 1.600 M⊕ · percentile 65 / cohort 570

Orbital period 4.24 d · percentile 47 / cohort 567

Distance 692.59 pc · percentile 80 / cohort 566

ESI 0.342 · percentile 49 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

4.243 days

Semi-major axis

0.0481 AU

Eccentricity

0.000

Inclination

89.08 °

Year Length

A year here lasts approximately 4.24 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0481 AU.

Transit Fingerprint

Depth

0.019 %

Duration

2.658 h

Impact parameter b

0.344

Rp / R★

0.013048

Transit midpoint (BJD)

2,454,968.0310

Photometric dip

Transit produces a flux drop of 188 ppm lasting ≈ 2.66 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013048

Semi-major axis / stellar radius

12.470

Impact parameter (b)

0.344

Transit mid-time (BJD)

2,454,968.0310

Angular separation (arcsec)

0.06940

Eq. Temperature

926K

(653 °C)

Insolation (S⊕)

166.11

Earth = 1.00

Earth Similarity (ESI)

0.342

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-1553

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,288 K — cooler than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.810 R☉

Stellar Mass

0.850 M☉

Metallicity [Fe/H]

-0.09

Extended Stellar Properties

Surface gravity (log g)

4.560 dex

Stellar density

2.036 g/cm³

Metallicity ratio

[Fe/H]

Distance

692.59 parsec

Light-years 2,258.94 ly

V-band magnitude

15.25 mag

Voyager-speed travel 39,836,350 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.415 mas

Total Proper Motion

20.359 mas/yr

PM Right Ascension

-7.34 mas/yr

PM Declination

-18.99 mas/yr

Galactic Cartesian (pc)

x = 0.290 · y = -0.721 · z = 0.630

Equatorial (J2000)

RA 291.91913° · Dec 39.02218°

Galactic ℓ, b

71.699° · 10.266°

Ecliptic λ, β

305.216° · 59.810°

HTM-20 index

2075160691