Key parameters at a glance

A radius of 0.74 Earth radii
A mass of 0.34 Earth masses
Surface gravity around 0.61 g
An orbital period of 1.962 days
Semi-major axis 0.0292 AU
Equilibrium temperature 1,448 K (1175 °C)
Distance from Earth 1,607.45 light-years
Earth Similarity Index 0.196
Travel time at Voyager 1 speed 28,347,380 years

Kepler-1963 b Planet Profile

Physical Specs

Radius

0.74 R⊕

Radius (Jupiter)

0.066 R♃

Mass

0.34 M⊕

Mass (Jupiter)

0.001 M♃

Density

4.49 g/cm³

Surface Gravity

0.61 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.196

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

#511of 570

top 89.5%

This planet

0.74R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Barnard c 0.74 R⊕ Kepler-444 f 0.74 R⊕ Kepler-125 c 0.74 R⊕

Metric	Earth	Kepler-1963 b	Jupiter
Radius (R⊕)	1.00	0.74	11.21
Mass (M⊕)	1.00	0.34	317.83
Density (g/cm³)	5.51	4.49	1.33
Surface Gravity (g)	1.00	0.61	2.53
Insolation (S⊕)	1.00	612.30	0.037

Star Catalogue Identifiers

TIC

TIC 272597196

Gaia DR2

Gaia DR2 2080561636560110464

Gaia DR3

Gaia DR3 2080561636560110464

System

Kepler-1963

Percentile among Rocky Terrestrial cohort

Radius 0.744 R⊕ · percentile 10 / cohort 570

Mass 0.337 M⊕ · percentile 8 / cohort 570

Orbital period 1.96 d · percentile 22 / cohort 567

Distance 492.85 pc · percentile 63 / cohort 566

ESI 0.196 · percentile 13 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

1.962 days

Semi-major axis

0.0292 AU

Eccentricity

0.000

Inclination

89.06 °

Year Length

A year here lasts approximately 1.96 Earth days (0.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0291 AU.

Transit Fingerprint

Depth

0.007 %

Duration

1.450 h

Impact parameter b

0.169

Rp / R★

0.007549

Transit midpoint (BJD)

2,454,964.5359

Photometric dip

Transit produces a flux drop of 68 ppm lasting ≈ 1.45 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007549

Semi-major axis / stellar radius

10.290

Impact parameter (b)

0.169

Transit mid-time (BJD)

2,454,964.5359

Angular separation (arcsec)

0.05910

Eq. Temperature

1,448K

(1175 °C)

Insolation (S⊕)

612.30

Earth = 1.00

Earth Similarity (ESI)

0.196

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-1963

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,726 K — cooler than the Sun (5,778 K)

Estimated Age

4.07 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.979 R☉

Stellar Mass

0.915 M☉

Metallicity [Fe/H]

-0.10

Extended Stellar Properties

Surface gravity (log g)

4.418 dex

Stellar density

5.353 g/cm³

Metallicity ratio

[Fe/H]

Distance

492.85 parsec

Light-years 1,607.45 ly

V-band magnitude

14.05 mag

Voyager-speed travel 28,347,380 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.000 mas

Total Proper Motion

11.829 mas/yr

PM Right Ascension

-0.66 mas/yr

PM Declination

-11.81 mas/yr

Galactic Cartesian (pc)

x = 0.304 · y = -0.608 · z = 0.734

Equatorial (J2000)

RA 296.58752° · Dec 47.20713°

Galactic ℓ, b

80.684° · 11.018°

Ecliptic λ, β

318.870° · 66.194°

HTM-20 index

1236444201