Key parameters at a glance

A radius of 2.07 Earth radii
A mass of 4.92 Earth masses
Surface gravity around 1.15 g
An orbital period of 5.906 days
Semi-major axis 0.0650 AU
Equilibrium temperature 1,012 K (739 °C)
Distance from Earth 4,009.04 light-years
Earth Similarity Index 0.265
Travel time at Voyager 1 speed 70,699,493 years

Kepler-1837 b Planet Profile

Physical Specs

Radius

2.07 R⊕

Radius (Jupiter)

0.184 R♃

Mass

4.92 M⊕

Mass (Jupiter)

0.016 M♃

Density

3.06 g/cm³

Surface Gravity

1.15 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.265

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

#1872of 1978

top 94.6%

This planet

2.07R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-92 d 2.07 R⊕ Kepler-1879 b 2.07 R⊕ Kepler-1679 b 2.07 R⊕

Metric	Earth	Kepler-1837 b	Jupiter
Radius (R⊕)	1.00	2.07	11.21
Mass (M⊕)	1.00	4.92	317.83
Density (g/cm³)	5.51	3.06	1.33
Surface Gravity (g)	1.00	1.15	2.53
Insolation (S⊕)	1.00	247.83	0.037

Star Catalogue Identifiers

TIC

TIC 158665571

Gaia DR2

Gaia DR2 2130247467504662016

Gaia DR3

Gaia DR3 2130247467504662016

System

Kepler-1837

Percentile among Sub-Neptune cohort

Radius 2.067 R⊕ · percentile 5 / cohort 1978

Mass 4.920 M⊕ · percentile 7 / cohort 1978

Orbital period 5.91 d · percentile 17 / cohort 1946

Distance 1,229.18 pc · percentile 87 / cohort 1975

ESI 0.265 · percentile 20 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

5.906 days

Semi-major axis

0.0650 AU

Eccentricity

0.000

Inclination

89.93 °

Year Length

A year here lasts approximately 5.91 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0650 AU.

Transit Fingerprint

Depth

0.022 %

Duration

2.392 h

Impact parameter b

0.236

Rp / R★

0.013616

Transit midpoint (BJD)

2,454,964.5577

Photometric dip

Transit produces a flux drop of 220 ppm lasting ≈ 2.39 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013616

Semi-major axis / stellar radius

8.300

Impact parameter (b)

0.236

Transit mid-time (BJD)

2,454,964.5577

Angular separation (arcsec)

0.05290

Eq. Temperature

1,012K

(739 °C)

Insolation (S⊕)

247.83

Earth = 1.00

Earth Similarity (ESI)

0.265

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-1837

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,966 K — hotter than the Sun (5,778 K)

Estimated Age

0.50 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.961 R☉

Stellar Mass

1.049 M☉

Metallicity [Fe/H]

-0.02

Extended Stellar Properties

Surface gravity (log g)

4.493 dex

Stellar density

3.746 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,229.18 parsec

Light-years 4,009.04 ly

V-band magnitude

15.48 mag

Voyager-speed travel 70,699,493 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.785 mas

Total Proper Motion

7.786 mas/yr

PM Right Ascension

-5.65 mas/yr

PM Declination

-5.35 mas/yr

Galactic Cartesian (pc)

x = 0.218 · y = -0.664 · z = 0.715

Equatorial (J2000)

RA 288.20760° · Dec 45.68345°

Galactic ℓ, b

76.708° · 15.563°

Ecliptic λ, β

303.943° · 66.989°

HTM-20 index

1962295887