Key parameters at a glance

A radius of 2.62 Earth radii
A mass of 7.35 Earth masses
Surface gravity around 1.07 g
An orbital period of 31.254 days
Semi-major axis 0.2053 AU
Equilibrium temperature 635 K (362 °C)
Distance from Earth 6,705.18 light-years
Earth Similarity Index 0.391
Travel time at Voyager 1 speed 118,245,848 years

Kepler-1916 b Planet Profile

Physical Specs

Radius

2.62 R⊕

Radius (Jupiter)

0.234 R♃

Mass

7.35 M⊕

Mass (Jupiter)

0.023 M♃

Density

2.25 g/cm³

Surface Gravity

1.07 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.391

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 1978

top 50.3%

This planet

2.62R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-385 d 2.62 R⊕ Kepler-450 c 2.62 R⊕ TOI-815 c 2.62 R⊕

Metric	Earth	Kepler-1916 b	Jupiter
Radius (R⊕)	1.00	2.62	11.21
Mass (M⊕)	1.00	7.35	317.83
Density (g/cm³)	5.51	2.25	1.33
Surface Gravity (g)	1.00	1.07	2.53
Insolation (S⊕)	1.00	38.54	0.037

Star Catalogue Identifiers

TIC

TIC 26751240

Gaia DR2

Gaia DR2 2128907162832189056

Gaia DR3

Gaia DR3 2128907162832189056

System

Kepler-1916

Percentile among Sub-Neptune cohort

Radius 2.618 R⊕ · percentile 50 / cohort 1978

Mass 7.350 M⊕ · percentile 46 / cohort 1978

Orbital period 31.25 d · percentile 74 / cohort 1946

Distance 2,055.82 pc · percentile 97 / cohort 1975

ESI 0.391 · percentile 50 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

31.254 days

Semi-major axis

0.2053 AU

Eccentricity

0.000

Inclination

89.98 °

Year Length

A year here lasts approximately 31.25 Earth days (8.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2053 AU.

Transit Fingerprint

Depth

0.044 %

Duration

5.662 h

Impact parameter b

0.019

Rp / R★

0.019192

Transit midpoint (BJD)

2,454,988.0470

Photometric dip

Transit produces a flux drop of 438 ppm lasting ≈ 5.66 h.

Extended Orbital Architecture

Planet / star radius ratio

0.019192

Semi-major axis / stellar radius

42.970

Impact parameter (b)

0.019

Transit mid-time (BJD)

2,454,988.0470

Angular separation (arcsec)

0.09990

Eq. Temperature

635K

(362 °C)

Insolation (S⊕)

38.54

Earth = 1.00

Earth Similarity (ESI)

0.391

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-1916

Spectral Class

F-type yellow-white

Effective Temperature

6,246 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.092 R☉

Stellar Mass

1.180 M☉

Metallicity [Fe/H]

0.07

Extended Stellar Properties

Surface gravity (log g)

4.433 dex

Stellar density

1.537 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,055.82 parsec

Light-years 6,705.18 ly

V-band magnitude

15.78 mag

Voyager-speed travel 118,245,848 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.457 mas

Total Proper Motion

11.186 mas/yr

PM Right Ascension

-4.34 mas/yr

PM Declination

-10.31 mas/yr

Galactic Cartesian (pc)

x = 0.260 · y = -0.611 · z = 0.748

Equatorial (J2000)

RA 293.07058° · Dec 48.38768°

Galactic ℓ, b

80.665° · 13.659°

Ecliptic λ, β

314.676° · 68.278°

HTM-20 index

-552973440