Key parameters at a glance

A radius of 5.40 Earth radii
A mass of 25.10 Earth masses
Surface gravity around 0.86 g
An orbital period of 64.618 days
Semi-major axis 0.2970 AU
Equilibrium temperature 383 K (110 °C)
Earth Similarity Index 0.448

Kepler-1737 b Planet Profile

Physical Specs

Radius

5.40 R⊕

Radius (Jupiter)

0.481 R♃

Mass

25.10 M⊕

Mass (Jupiter)

0.079 M♃

Density

0.88 g/cm³

Surface Gravity

0.86 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.448

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

#329of 574

top 57.1%

This planet

5.40R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Kepler-328 c 5.40 R⊕ K2-24 b 5.40 R⊕ HD 10180 e 5.39 R⊕

Metric	Earth	Kepler-1737 b	Jupiter
Radius (R⊕)	1.00	5.40	11.21
Mass (M⊕)	1.00	25.10	317.83
Density (g/cm³)	5.51	0.88	1.33
Surface Gravity (g)	1.00	0.86	2.53
Insolation (S⊕)	1.00	5.09	0.037

Star Catalogue Identifiers

TIC

TIC 272842268

Gaia DR2

Gaia DR2 2086388872088420352

System

Kepler-1737

Percentile among Neptune-like cohort

Radius 5.395 R⊕ · percentile 43 / cohort 574

Mass 25.100 M⊕ · percentile 42 / cohort 574

Orbital period 64.62 d · percentile 74 / cohort 524

ESI 0.448 · percentile 80 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

64.618 days

Semi-major axis

0.2970 AU

Eccentricity

0.000

Inclination

88.90 °

Year Length

A year here lasts approximately 64.62 Earth days (17.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2970 AU.

Transit Fingerprint

Depth

0.249 %

Duration

5.796 h

Impact parameter b

0.892

Rp / R★

0.056124

Transit midpoint (BJD)

2,454,999.1443

Photometric dip

Transit produces a flux drop of 2,487 ppm lasting ≈ 5.80 h.

Extended Orbital Architecture

Planet / star radius ratio

0.056124

Semi-major axis / stellar radius

47.000

Impact parameter (b)

0.892

Transit mid-time (BJD)

2,454,999.1443

Eq. Temperature

383K

(110 °C)

Insolation (S⊕)

5.09

Earth = 1.00

Earth Similarity (ESI)

0.448

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

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-1737

Spectral Class

K-type orange

Effective Temperature

5,043 K — cooler than the Sun (5,778 K)

Estimated Age

13.70 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.881 R☉

Stellar Mass

0.834 M☉

Metallicity [Fe/H]

0.30

Extended Stellar Properties

Surface gravity (log g)

4.470 dex

Stellar density

0.472 g/cm³

Metallicity ratio

[Fe/H]

Multi-band Host Photometry — 16 bands

Astrometric Data

Total Proper Motion

5.817 mas/yr

PM Right Ascension

-4.80 mas/yr

PM Declination

-3.29 mas/yr

Galactic Cartesian (pc)

x = 0.307 · y = -0.602 · z = 0.737

Equatorial (J2000)

RA 297.01481° · Dec 47.48642°

Galactic ℓ, b

81.075° · 10.896°

Ecliptic λ, β

319.823° · 66.315°

HTM-20 index

1250560055

Similar Worlds

Kepler-257 c

Neptune-like · K-type orange

Radius 5.41 R⊕ · 2,544.9 ly

HD 99492 b

Neptune-like · K-type orange

Radius 5.44 R⊕ · 59.4 ly

TOI-1694 b

Neptune-like · K-type orange

Radius 5.34 R⊕ · 406.7 ly

TOI-3568 b

Neptune-like · K-type orange

Radius 5.30 R⊕ · 645.5 ly

Kepler-957 b

Neptune-like · K-type orange

Radius 5.50 R⊕ · 2,689.8 ly

HD 192310 c

Neptune-like · K-type orange

Radius 5.25 R⊕ · 28.7 ly

Explore Related Categories

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