Key parameters at a glance

A radius of 4.13 Earth radii
A mass of 15.90 Earth masses
Surface gravity around 0.93 g
An orbital period of 11.930 days
Semi-major axis 0.1028 AU
Equilibrium temperature 770 K (497 °C)
Distance from Earth 7,353.81 light-years
Earth Similarity Index 0.267
Travel time at Voyager 1 speed 129,684,374 years

Kepler-1799 b Planet Profile

Physical Specs

Radius

4.13 R⊕

Radius (Jupiter)

0.368 R♃

Mass

15.90 M⊕

Mass (Jupiter)

0.050 M♃

Density

1.24 g/cm³

Surface Gravity

0.93 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.267

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

#541of 574

top 94.1%

This planet

4.13R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

HD 28109 c 4.13 R⊕ Kepler-697 b 4.13 R⊕ Kepler-966 b 4.13 R⊕

Metric	Earth	Kepler-1799 b	Jupiter
Radius (R⊕)	1.00	4.13	11.21
Mass (M⊕)	1.00	15.90	317.83
Density (g/cm³)	5.51	1.24	1.33
Surface Gravity (g)	1.00	0.93	2.53
Insolation (S⊕)	1.00	83.04	0.037

Star Catalogue Identifiers

TIC

TIC 298961646

Gaia DR2

Gaia DR2 2133366369675069568

Gaia DR3

Gaia DR3 2133366369675069568

System

Kepler-1799

Percentile among Neptune-like cohort

Radius 4.128 R⊕ · percentile 6 / cohort 574

Mass 15.900 M⊕ · percentile 12 / cohort 574

Orbital period 11.93 d · percentile 41 / cohort 524

Distance 2,254.69 pc · percentile 90 / cohort 572

ESI 0.267 · percentile 43 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

11.930 days

Semi-major axis

0.1028 AU

Eccentricity

0.000

Inclination

89.99 °

Year Length

A year here lasts approximately 11.93 Earth days (3.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1028 AU.

Transit Fingerprint

Depth

0.071 %

Duration

6.152 h

Impact parameter b

0.823

Rp / R★

0.024200

Transit midpoint (BJD)

2,454,969.6692

Photometric dip

Transit produces a flux drop of 709 ppm lasting ≈ 6.15 h.

Extended Orbital Architecture

Planet / star radius ratio

0.024200

Semi-major axis / stellar radius

15.184

Impact parameter (b)

0.823

Transit mid-time (BJD)

2,454,969.6692

Angular separation (arcsec)

0.04560

Eq. Temperature

770K

(497 °C)

Insolation (S⊕)

83.04

Earth = 1.00

Earth Similarity (ESI)

0.267

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-1799

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,831 K — hotter than the Sun (5,778 K)

Estimated Age

0.50 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.921 R☉

Stellar Mass

1.016 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.517 dex

Stellar density

0.465 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,254.69 parsec

Light-years 7,353.81 ly

V-band magnitude

15.99 mag

Voyager-speed travel 129,684,374 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.413 mas

Total Proper Motion

2.599 mas/yr

PM Right Ascension

-1.31 mas/yr

PM Declination

2.24 mas/yr

Galactic Cartesian (pc)

x = 0.196 · y = -0.591 · z = 0.782

Equatorial (J2000)

RA 288.30870° · Dec 51.47833°

Galactic ℓ, b

82.328° · 17.705°

Ecliptic λ, β

310.225° · 72.366°

HTM-20 index

113991745