Key parameters at a glance

A radius of 1.04 Earth radii
A mass of 1.12 Earth masses
Surface gravity around 1.04 g
An orbital period of 1.451 days
Semi-major axis 0.0252 AU
Equilibrium temperature 1,700 K (1427 °C)
Distance from Earth 3,470.46 light-years
Earth Similarity Index 0.176
Travel time at Voyager 1 speed 61,201,610 years

Kepler-1578 b Planet Profile

Physical Specs

Radius

1.04 R⊕

Radius (Jupiter)

0.093 R♃

Mass

1.12 M⊕

Mass (Jupiter)

0.004 M♃

Density

5.47 g/cm³

Surface Gravity

1.04 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.176

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

#288of 570

top 50.4%

This planet

1.04R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

GJ 1061 b 1.04 R⊕ Kepler-1409 b 1.04 R⊕ EPIC 201841433 b 1.04 R⊕

Metric	Earth	Kepler-1578 b	Jupiter
Radius (R⊕)	1.00	1.04	11.21
Mass (M⊕)	1.00	1.12	317.83
Density (g/cm³)	5.51	5.47	1.33
Surface Gravity (g)	1.00	1.04	2.53
Insolation (S⊕)	1.00	1,486.44	0.037

Star Catalogue Identifiers

TIC

TIC 158662813

Gaia DR2

Gaia DR2 2130976787311412352

Gaia DR3

Gaia DR3 2130976787311412352

System

Kepler-1578

Percentile among Rocky Terrestrial cohort

Radius 1.040 R⊕ · percentile 48 / cohort 570

Mass 1.120 M⊕ · percentile 43 / cohort 570

Orbital period 1.45 d · percentile 16 / cohort 567

Distance 1,064.05 pc · percentile 95 / cohort 566

ESI 0.176 · percentile 10 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

1.451 days

Semi-major axis

0.0252 AU

Eccentricity

0.000

Inclination

86.85 °

Year Length

A year here lasts approximately 1.45 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0252 AU.

Transit Fingerprint

Depth

0.014 %

Duration

1.781 h

Impact parameter b

0.333

Rp / R★

0.011069

Transit midpoint (BJD)

2,454,965.2303

Photometric dip

Transit produces a flux drop of 136 ppm lasting ≈ 1.78 h.

Extended Orbital Architecture

Planet / star radius ratio

0.011069

Semi-major axis / stellar radius

6.240

Impact parameter (b)

0.333

Transit mid-time (BJD)

2,454,965.2303

Angular separation (arcsec)

0.02370

Eq. Temperature

1,700K

(1427 °C)

Insolation (S⊕)

1,486.44

Earth = 1.00

Earth Similarity (ESI)

0.176

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-1578

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,545 K — cooler than the Sun (5,778 K)

Estimated Age

4.27 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.860 R☉

Stellar Mass

0.900 M☉

Metallicity [Fe/H]

-0.13

Extended Stellar Properties

Surface gravity (log g)

4.530 dex

Stellar density

2.007 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,064.05 parsec

Light-years 3,470.46 ly

V-band magnitude

15.59 mag

Voyager-speed travel 61,201,610 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.912 mas

Total Proper Motion

16.640 mas/yr

PM Right Ascension

15.38 mas/yr

PM Declination

6.36 mas/yr

Galactic Cartesian (pc)

x = 0.211 · y = -0.638 · z = 0.741

Equatorial (J2000)

RA 288.30211° · Dec 47.77562°

Galactic ℓ, b

78.739° · 16.316°

Ecliptic λ, β

305.962° · 68.941°

HTM-20 index

-1876983918