Key parameters at a glance

A radius of 2.62 Earth radii
A mass of 7.38 Earth masses
Surface gravity around 1.07 g
An orbital period of 37.887 days
Semi-major axis 0.2107 AU
Equilibrium temperature 479 K (206 °C)
Distance from Earth 3,840.58 light-years
Earth Similarity Index 0.506
Travel time at Voyager 1 speed 67,728,708 years

Kepler-1919 b Planet Profile

Physical Specs

Radius

2.62 R⊕

Radius (Jupiter)

0.234 R♃

Mass

7.38 M⊕

Mass (Jupiter)

0.023 M♃

Density

2.24 g/cm³

Surface Gravity

1.07 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.506

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

#988of 1978

top 49.9%

This planet

2.62R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-815 c 2.62 R⊕ Kepler-977 b 2.62 R⊕ Kepler-450 c 2.62 R⊕

Metric	Earth	Kepler-1919 b	Jupiter
Radius (R⊕)	1.00	2.62	11.21
Mass (M⊕)	1.00	7.38	317.83
Density (g/cm³)	5.51	2.24	1.33
Surface Gravity (g)	1.00	1.07	2.53
Insolation (S⊕)	1.00	12.46	0.037

Star Catalogue Identifiers

TIC

TIC 164459883

Gaia DR2

Gaia DR2 2105329819599365248

Gaia DR3

Gaia DR3 2105329819599365248

System

Kepler-1919

Percentile among Sub-Neptune cohort

Radius 2.624 R⊕ · percentile 50 / cohort 1978

Mass 7.380 M⊕ · percentile 46 / cohort 1978

Orbital period 37.89 d · percentile 79 / cohort 1946

Distance 1,177.53 pc · percentile 86 / cohort 1975

ESI 0.506 · percentile 71 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

37.887 days

Semi-major axis

0.2107 AU

Eccentricity

0.000

Inclination

89.97 °

Year Length

A year here lasts approximately 37.89 Earth days (10.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2107 AU.

Transit Fingerprint

Depth

0.067 %

Duration

5.165 h

Impact parameter b

0.026

Rp / R★

0.023418

Transit midpoint (BJD)

2,454,966.0195

Photometric dip

Transit produces a flux drop of 672 ppm lasting ≈ 5.17 h.

Extended Orbital Architecture

Planet / star radius ratio

0.023418

Semi-major axis / stellar radius

56.750

Impact parameter (b)

0.026

Transit mid-time (BJD)

2,454,966.0195

Angular separation (arcsec)

0.17900

Eq. Temperature

479K

(206 °C)

Insolation (S⊕)

12.46

Earth = 1.00

Earth Similarity (ESI)

0.506

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-1919

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,513 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.818 R☉

Stellar Mass

0.868 M☉

Metallicity [Fe/H]

-0.16

Extended Stellar Properties

Surface gravity (log g)

4.551 dex

Stellar density

2.409 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,177.53 parsec

Light-years 3,840.58 ly

V-band magnitude

16.16 mag

Voyager-speed travel 67,728,708 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.821 mas

Total Proper Motion

8.287 mas/yr

PM Right Ascension

6.56 mas/yr

PM Declination

5.06 mas/yr

Galactic Cartesian (pc)

x = 0.164 · y = -0.701 · z = 0.694

Equatorial (J2000)

RA 283.13192° · Dec 43.95601°

Galactic ℓ, b

73.638° · 18.268°

Ecliptic λ, β

294.010° · 66.304°

HTM-20 index

687377387