Key parameters at a glance

A radius of 1.20 Earth radii
A mass of 1.87 Earth masses
Surface gravity around 1.30 g
An orbital period of 2.616 days
Semi-major axis 0.0364 AU
Equilibrium temperature 1,379 K (1106 °C)
Distance from Earth 4,746.74 light-years
Earth Similarity Index 0.217
Travel time at Voyager 1 speed 83,708,825 years

Kepler-1573 b Planet Profile

Physical Specs

Radius

1.20 R⊕

Radius (Jupiter)

0.107 R♃

Mass

1.87 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.95 g/cm³

Surface Gravity

1.30 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.217

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

#75of 570

top 13.0%

This planet

1.20R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-225 b 1.20 R⊕ Kepler-282 c 1.20 R⊕ Kepler-367 c 1.20 R⊕

Metric	Earth	Kepler-1573 b	Jupiter
Radius (R⊕)	1.00	1.20	11.21
Mass (M⊕)	1.00	1.87	317.83
Density (g/cm³)	5.51	5.95	1.33
Surface Gravity (g)	1.00	1.30	2.53
Insolation (S⊕)	1.00	1,343.11	0.037

Star Catalogue Identifiers

TIC

TIC 26752863

Gaia DR2

Gaia DR2 2129820582115829504

Gaia DR3

Gaia DR3 2129820582115829504

System

Kepler-1573

Percentile among Rocky Terrestrial cohort

Radius 1.200 R⊕ · percentile 84 / cohort 570

Mass 1.870 M⊕ · percentile 77 / cohort 570

Orbital period 2.62 d · percentile 30 / cohort 567

Distance 1,455.36 pc · percentile 98 / cohort 566

ESI 0.217 · percentile 17 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.616 days

Semi-major axis

0.0364 AU

Eccentricity

0.000

Inclination

87.98 °

Year Length

A year here lasts approximately 2.62 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0364 AU.

Transit Fingerprint

Depth

0.012 %

Duration

2.639 h

Impact parameter b

0.250

Rp / R★

0.010947

Transit midpoint (BJD)

2,454,964.9824

Photometric dip

Transit produces a flux drop of 120 ppm lasting ≈ 2.64 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010947

Semi-major axis / stellar radius

7.650

Impact parameter (b)

0.250

Transit mid-time (BJD)

2,454,964.9824

Angular separation (arcsec)

0.02500

Eq. Temperature

1,379K

(1106 °C)

Insolation (S⊕)

1,343.11

Earth = 1.00

Earth Similarity (ESI)

0.217

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-1573

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,808 K — hotter than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.000 R☉

Stellar Mass

1.010 M☉

Metallicity [Fe/H]

0.02

Extended Stellar Properties

Surface gravity (log g)

4.440 dex

Stellar density

0.978 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,455.36 parsec

Light-years 4,746.74 ly

V-band magnitude

15.30 mag

Voyager-speed travel 83,708,825 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.659 mas

Total Proper Motion

4.070 mas/yr

PM Right Ascension

-3.97 mas/yr

PM Declination

0.88 mas/yr

Galactic Cartesian (pc)

x = 0.254 · y = -0.598 · z = 0.760

Equatorial (J2000)

RA 292.98831° · Dec 49.48497°

Galactic ℓ, b

81.661° · 14.180°

Ecliptic λ, β

315.846° · 69.292°

HTM-20 index

558405495