Key parameters at a glance

A radius of 3.02 Earth radii
A mass of 9.39 Earth masses
Surface gravity around 1.03 g
An orbital period of 9.689 days
Semi-major axis 0.0915 AU
Equilibrium temperature 1,014 K (741 °C)
Distance from Earth 2,951.94 light-years
Earth Similarity Index 0.229
Travel time at Voyager 1 speed 52,057,403 years

Kepler-1937 b Planet Profile

Physical Specs

Radius

3.02 R⊕

Radius (Jupiter)

0.270 R♃

Mass

9.39 M⊕

Mass (Jupiter)

0.030 M♃

Density

1.87 g/cm³

Surface Gravity

1.03 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.229

HZ Position Inner

Controversial No

Discovery

Year 2021

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#501of 1978

top 25.3%

This planet

3.02R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-598 c 3.02 R⊕ Kepler-1808 b 3.03 R⊕ TOI-4010 b 3.02 R⊕

Metric	Earth	Kepler-1937 b	Jupiter
Radius (R⊕)	1.00	3.02	11.21
Mass (M⊕)	1.00	9.39	317.83
Density (g/cm³)	5.51	1.87	1.33
Surface Gravity (g)	1.00	1.03	2.53
Insolation (S⊕)	1.00	163.10	0.037

Star Catalogue Identifiers

TIC

TIC 122597057

Gaia DR2

Gaia DR2 2101567359532639872

Gaia DR3

Gaia DR3 2101567359532639872

System

Kepler-1937

Percentile among Sub-Neptune cohort

Radius 3.023 R⊕ · percentile 75 / cohort 1978

Mass 9.390 M⊕ · percentile 68 / cohort 1978

Orbital period 9.69 d · percentile 33 / cohort 1946

Distance 905.07 pc · percentile 73 / cohort 1975

ESI 0.229 · percentile 12 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

9.689 days

Semi-major axis

0.0915 AU

Eccentricity

0.000

Inclination

89.82 °

Year Length

A year here lasts approximately 9.69 Earth days (2.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0915 AU.

Transit Fingerprint

Depth

0.067 %

Duration

2.000 h

Impact parameter b

0.118

Rp / R★

0.023819

Transit midpoint (BJD)

2,454,964.8335

Photometric dip

Transit produces a flux drop of 666 ppm lasting ≈ 2.00 h.

Extended Orbital Architecture

Planet / star radius ratio

0.023819

Semi-major axis / stellar radius

37.990

Impact parameter (b)

0.118

Transit mid-time (BJD)

2,454,964.8335

Angular separation (arcsec)

0.10100

Eq. Temperature

1,014K

(741 °C)

Insolation (S⊕)

163.10

Earth = 1.00

Earth Similarity (ESI)

0.229

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Valizadegan et al. 2022

Instrument

Kepler CCD Array

Publication

2022-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2021 at Kepler (12 shown).

Kepler-1816 b · Super-Earth Kepler-1705 c · Sub-Neptune Kepler-1948 b · Rocky Terrestrial Kepler-196 d · Sub-Neptune Kepler-1853 b · Super-Earth Kepler-1840 b · Sub-Neptune Kepler-1881 b · Sub-Neptune Kepler-1858 b · Sub-Neptune Kepler-1874 b · Sub-Neptune Kepler-1802 c · Sub-Neptune Kepler-1749 b · Super-Earth Kepler-1849 b · Sub-Neptune

Host System: Kepler-1937

Spectral Class

F-type yellow-white

Effective Temperature

6,457 K — hotter than the Sun (5,778 K)

Estimated Age

2.45 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.196 R☉

Stellar Mass

1.190 M☉

Metallicity [Fe/H]

-0.06

Extended Stellar Properties

Surface gravity (log g)

4.358 dex

Stellar density

10.746 g/cm³

Metallicity ratio

[Fe/H]

Distance

905.07 parsec

Light-years 2,951.94 ly

V-band magnitude

14.16 mag

Voyager-speed travel 52,057,403 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.076 mas

Total Proper Motion

1.509 mas/yr

PM Right Ascension

0.06 mas/yr

PM Declination

-1.51 mas/yr

Galactic Cartesian (pc)

x = 0.267 · y = -0.709 · z = 0.653

Equatorial (J2000)

RA 290.65839° · Dec 40.77854°

Galactic ℓ, b

72.870° · 11.910°

Ecliptic λ, β

304.388° · 61.774°

HTM-20 index

-1073248596