Key parameters at a glance

A radius of 3.22 Earth radii
A mass of 10.40 Earth masses
Surface gravity around 1.00 g
An orbital period of 13.835 days
Semi-major axis 0.1140 AU
Equilibrium temperature 809 K (536 °C)
Distance from Earth 4,940.15 light-years
Earth Similarity Index 0.283
Travel time at Voyager 1 speed 87,119,619 years

Kepler-1915 b Planet Profile

Physical Specs

Radius

3.22 R⊕

Radius (Jupiter)

0.287 R♃

Mass

10.40 M⊕

Mass (Jupiter)

0.033 M♃

Density

1.71 g/cm³

Surface Gravity

1.00 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.283

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

#337of 1978

top 17.0%

This planet

3.22R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-648 b 3.22 R⊕ Kepler-472 b 3.22 R⊕ TOI-3493 b 3.22 R⊕

Metric	Earth	Kepler-1915 b	Jupiter
Radius (R⊕)	1.00	3.22	11.21
Mass (M⊕)	1.00	10.40	317.83
Density (g/cm³)	5.51	1.71	1.33
Surface Gravity (g)	1.00	1.00	2.53
Insolation (S⊕)	1.00	101.05	0.037

Star Catalogue Identifiers

TIC

TIC 185184560

Gaia DR2

Gaia DR2 2081880913079644288

Gaia DR3

Gaia DR3 2081880913079644288

System

Kepler-1915

Percentile among Sub-Neptune cohort

Radius 3.218 R⊕ · percentile 83 / cohort 1978

Mass 10.400 M⊕ · percentile 76 / cohort 1978

Orbital period 13.84 d · percentile 47 / cohort 1946

Distance 1,514.66 pc · percentile 94 / cohort 1975

ESI 0.283 · percentile 24 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

13.835 days

Semi-major axis

0.1140 AU

Eccentricity

0.000

Inclination

84.10 °

Year Length

A year here lasts approximately 13.84 Earth days (3.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1140 AU.

Transit Fingerprint

Depth

0.087 %

Duration

3.786 h

Impact parameter b

0.393

Rp / R★

0.027332

Transit midpoint (BJD)

2,454,967.3077

Photometric dip

Transit produces a flux drop of 867 ppm lasting ≈ 3.79 h.

Extended Orbital Architecture

Planet / star radius ratio

0.027332

Semi-major axis / stellar radius

9.150

Impact parameter (b)

0.393

Transit mid-time (BJD)

2,454,967.3077

Angular separation (arcsec)

0.07530

Eq. Temperature

809K

(536 °C)

Insolation (S⊕)

101.05

Earth = 1.00

Earth Similarity (ESI)

0.283

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-1915

Spectral Class

F-type yellow-white

Effective Temperature

6,020 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.057 R☉

Stellar Mass

1.030 M☉

Metallicity [Fe/H]

-0.06

Extended Stellar Properties

Surface gravity (log g)

4.403 dex

Stellar density

0.076 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,514.66 parsec

Light-years 4,940.15 ly

V-band magnitude

16.26 mag

Voyager-speed travel 87,119,619 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.633 mas

Total Proper Motion

6.009 mas/yr

PM Right Ascension

-1.50 mas/yr

PM Declination

-5.82 mas/yr

Galactic Cartesian (pc)

x = 0.372 · y = -0.612 · z = 0.698

Equatorial (J2000)

RA 301.27869° · Dec 44.25051°

Galactic ℓ, b

79.753° · 6.705°

Ecliptic λ, β

322.620° · 62.095°

HTM-20 index

-1762044077