Key parameters at a glance

A radius of 1.35 Earth radii
A mass of 2.40 Earth masses
Surface gravity around 1.31 g
An orbital period of 41.869 days
Semi-major axis 0.2297 AU
Equilibrium temperature 492 K (219 °C)
Distance from Earth 1,701.85 light-years
Earth Similarity Index 0.620
Travel time at Voyager 1 speed 30,012,170 years

Kepler-1965 b Planet Profile

Physical Specs

Radius

1.35 R⊕

Radius (Jupiter)

0.121 R♃

Mass

2.40 M⊕

Mass (Jupiter)

0.008 M♃

Density

5.31 g/cm³

Surface Gravity

1.31 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.620

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

#995of 1176

top 84.5%

This planet

1.35R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-1912 b 1.36 R⊕ K2-190 b 1.36 R⊕ Kepler-301 c 1.35 R⊕

Metric	Earth	Kepler-1965 b	Jupiter
Radius (R⊕)	1.00	1.35	11.21
Mass (M⊕)	1.00	2.40	317.83
Density (g/cm³)	5.51	5.31	1.33
Surface Gravity (g)	1.00	1.31	2.53
Insolation (S⊕)	1.00	13.80	0.037

Star Catalogue Identifiers

TIC

TIC 137635841

Gaia DR2

Gaia DR2 2051918293507634048

Gaia DR3

Gaia DR3 2051918293507634048

System

Kepler-1965

Percentile among Super-Earth cohort

Radius 1.354 R⊕ · percentile 15 / cohort 1176

Mass 2.400 M⊕ · percentile 15 / cohort 1176

Orbital period 41.87 d · percentile 95 / cohort 1164

Distance 521.79 pc · percentile 48 / cohort 1171

ESI 0.620 · percentile 81 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

41.869 days

Semi-major axis

0.2297 AU

Eccentricity

0.000

Inclination

87.73 °

Year Length

A year here lasts approximately 41.87 Earth days (11.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2297 AU.

Transit Fingerprint

Depth

0.015 %

Duration

5.783 h

Impact parameter b

0.448

Rp / R★

0.011577

Transit midpoint (BJD)

2,454,980.0299

Photometric dip

Transit produces a flux drop of 151 ppm lasting ≈ 5.78 h.

Extended Orbital Architecture

Planet / star radius ratio

0.011577

Semi-major axis / stellar radius

23.200

Impact parameter (b)

0.448

Transit mid-time (BJD)

2,454,980.0299

Angular separation (arcsec)

0.44000

Eq. Temperature

492K

(219 °C)

Insolation (S⊕)

13.80

Earth = 1.00

Earth Similarity (ESI)

0.620

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-1965

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,852 K — hotter than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.837 R☉

Stellar Mass

0.928 M☉

Metallicity [Fe/H]

-0.30

Extended Stellar Properties

Surface gravity (log g)

4.559 dex

Stellar density

0.136 g/cm³

Metallicity ratio

[Fe/H]

Distance

521.79 parsec

Light-years 1,701.85 ly

V-band magnitude

13.84 mag

Voyager-speed travel 30,012,170 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.888 mas

Total Proper Motion

12.525 mas/yr

PM Right Ascension

3.82 mas/yr

PM Declination

-11.93 mas/yr

Galactic Cartesian (pc)

x = 0.302 · y = -0.728 · z = 0.616

Equatorial (J2000)

RA 292.51471° · Dec 38.02199°

Galactic ℓ, b

71.009° · 9.397°

Ecliptic λ, β

305.512° · 58.717°

HTM-20 index

1279330361