Key parameters at a glance

A radius of 1.18 Earth radii
A mass of 1.76 Earth masses
Surface gravity around 1.26 g
An orbital period of 1.444 days
Semi-major axis 0.0245 AU
Equilibrium temperature 1,800 K (1527 °C)
Distance from Earth 1,687.18 light-years
Earth Similarity Index 0.159
Travel time at Voyager 1 speed 29,753,398 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-1537 b Planet Profile

Physical Specs

Radius

1.18 R⊕

Radius (Jupiter)

0.105 R♃

Mass

1.76 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.89 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.159

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

#117of 570

top 20.4%

This planet

1.18R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1430 b 1.18 R⊕ Kepler-1512 b 1.18 R⊕ Kepler-332 d 1.18 R⊕

Metric	Earth	Kepler-1537 b	Jupiter
Radius (R⊕)	1.00	1.18	11.21
Mass (M⊕)	1.00	1.76	317.83
Density (g/cm³)	5.51	5.89	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	713.17	0.037

Star Catalogue Identifiers

TIC

TIC 271046907

Gaia DR2

Gaia DR2 2078291832243170048

Gaia DR3

Gaia DR3 2078291832243170048

System

Kepler-1537

Percentile among Rocky Terrestrial cohort

Radius 1.180 R⊕ · percentile 77 / cohort 570

Mass 1.760 M⊕ · percentile 71 / cohort 570

Orbital period 1.44 d · percentile 16 / cohort 567

Distance 517.29 pc · percentile 66 / cohort 566

ESI 0.159 · percentile 6 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

1.444 days

Semi-major axis

0.0245 AU

Eccentricity

0.000

Inclination

89.18 °

Year Length

A year here lasts approximately 1.44 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0245 AU.

Transit Fingerprint

Depth

0.022 %

Duration

0.975 h

Impact parameter b

0.162

Rp / R★

0.013881

Transit midpoint (BJD)

2,454,965.8065

Photometric dip

Transit produces a flux drop of 222 ppm lasting ≈ 0.97 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013881

Semi-major axis / stellar radius

11.330

Impact parameter (b)

0.162

Transit mid-time (BJD)

2,454,965.8065

Angular separation (arcsec)

0.04740

Eq. Temperature

1,800K

(1527 °C)

Insolation (S⊕)

713.17

Earth = 1.00

Earth Similarity (ESI)

0.159

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.

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-1537

Spectral Class

K-type orange

Effective Temperature

5,079 K — cooler than the Sun (5,778 K)

Estimated Age

5.01 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.770 R☉

Stellar Mass

0.810 M☉

Metallicity [Fe/H]

-0.08

Extended Stellar Properties

Surface gravity (log g)

4.580 dex

Stellar density

9.675 g/cm³

Metallicity ratio

[Fe/H]

Distance

517.29 parsec

Light-years 1,687.18 ly

V-band magnitude

14.83 mag

Voyager-speed travel 29,753,398 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.905 mas

Total Proper Motion

6.760 mas/yr

PM Right Ascension

-0.67 mas/yr

PM Declination

-6.73 mas/yr

Galactic Cartesian (pc)

x = 0.298 · y = -0.657 · z = 0.692

Equatorial (J2000)

RA 294.38539° · Dec 43.82545°

Galactic ℓ, b

76.905° · 10.804°

Ecliptic λ, β

312.290° · 63.727°

HTM-20 index

-1329117026