Confirmed Exoplanet Discovered 2023

Kepler-416 d

A super-earth orbiting the g-type yellow (sun-like) Kepler-416, located approximately 2,253.1 light-years from Earth.

Key parameters at a glance

  • A radius of 1.61 Earth radii
  • A mass of 3.22 Earth masses
  • Surface gravity around 1.24 g
  • An orbital period of 3.076 days
  • Semi-major axis 0.0407 AU
  • Equilibrium temperature 1,253 K (980 °C)
  • Distance from Earth 2,253.15 light-years
  • Earth Similarity Index 0.227
  • Travel time at Voyager 1 speed 39,734,256 years

2 siblings around Kepler-416

Kepler-416 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet Type Radius (R⊕) Mass (M⊕) Period (d) Eq. T (K) Year
Kepler-416 d this Super-Earth 1.61 3.22 3.076 1,253 2023
Kepler-416 b Sub-Neptune 2.48 58.20 6.319 986 2014
Kepler-416 c Sub-Neptune 2.35 6.13 12.209 791 2014

Kepler-416 d Planet Profile

Physical Specs

Radius
1.61 R⊕
Radius (Jupiter)
0.144 R♃
Mass
3.22 M⊕
Mass (Jupiter)
0.010 M♃
Density
4.24 g/cm³
Surface Gravity
1.24 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.227
HZ Position Inner
Controversial No

Discovery

Year 2023
Method Transit
Facility Kepler
Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#550of 1176

top 46.7%

This planet

1.61R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth Kepler-416 d Jupiter
Radius (R⊕)1.001.6111.21
Mass (M⊕)1.003.22317.83
Density (g/cm³)5.514.241.33
Surface Gravity (g)1.001.242.53
Insolation (S⊕)1.00583.250.037

Star Catalogue Identifiers

TIC

TIC 137217372

Gaia DR2

Gaia DR2 2052975370856687744

Gaia DR3

Gaia DR3 2052975370856687744

System

Kepler-416

Percentile among Super-Earth cohort

Radius 1.610 R⊕ · percentile 52 / cohort 1176
Mass 3.220 M⊕ · percentile 47 / cohort 1176
Orbital period 3.08 d · percentile 22 / cohort 1164
Distance 690.82 pc · percentile 60 / cohort 1171
ESI 0.227 · percentile 18 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
3.076 days
Semi-major axis
0.0407 AU
Eccentricity
0.000
Inclination
83.78 °

Year Length

A year here lasts approximately 3.08 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0407 AU.

Transit Fingerprint

Depth

0.022 %

Duration

2.633 h

Impact parameter b

0.708

Rp / R★

0.014420

Transit midpoint (BJD)

2,455,186.7643

Photometric dip

Transit produces a flux drop of 217 ppm lasting ≈ 2.63 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014420

Semi-major axis / stellar radius

6.540

Impact parameter (b)

0.708

Transit mid-time (BJD)

2,455,186.7643

Angular separation (arcsec)

0.05890

Eq. Temperature

1,253K

(980 °C)

Insolation (S⊕)

583.25

Earth = 1.00

Earth Similarity (ESI)

0.227

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. 2023

Instrument

Kepler CCD Array

Publication

2023-05

Observation locale

Space

Host System: Kepler-416

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,670 K — cooler than the Sun (5,778 K)

Estimated Age

2.69 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.022 R☉

Stellar Mass

0.949 M☉

Metallicity [Fe/H]

0.06

Extended Stellar Properties

Surface gravity (log g)

4.397 dex

Stellar density

0.558 g/cm³

Metallicity ratio

[Fe/H]

Distance
690.82 parsec
Light-years 2,253.15 ly
V-band magnitude
14.17 mag
Voyager-speed travel 39,734,256 yr

Multi-band Host Photometry — 11 bands

12.514.514.17V14.02Gaia14.03Kepler13.54TESS14.51Sloan g13.98Sloan r13.82Sloan i13.75Sloan z12.87J12.58H12.51K

Astrometric Data

Parallax

1.419 mas

Total Proper Motion

2.202 mas/yr

PM Right Ascension

-2.05 mas/yr

PM Declination

-0.80 mas/yr

Galactic Cartesian (pc)

x = 0.285 · y = -0.720 · z = 0.632

Equatorial (J2000)

RA 291.55696° · Dec 39.22729°

Galactic ℓ, b

71.758° · 10.609°

Ecliptic λ, β

304.800° · 60.088°

HTM-20 index

1525631769

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