Key parameters at a glance

A radius of 2.80 Earth radii
A mass of 14.90 Earth masses
Surface gravity around 1.90 g
An orbital period of 26.136 days
Semi-major axis 0.1786 AU
Equilibrium temperature 782 K (509 °C)
Distance from Earth 3,120.85 light-years
Earth Similarity Index 0.315
Travel time at Voyager 1 speed 55,036,240 years

2 siblings around Kepler-350

Kepler-350 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-350 b	Super-Earth	1.85	16.90	11.190	1,037	2014
Kepler-350 c	Sub-Neptune	3.10	6.10	17.849	888	2013
Kepler-350 d this	Sub-Neptune	2.80	14.90	26.136	782	2013

Kepler-350 d Planet Profile

Physical Specs

Radius

2.80 R⊕

Radius (Jupiter)

0.250 R♃

Mass

14.90 M⊕

Mass (Jupiter)

0.047 M♃

Density

2.69 g/cm³

Surface Gravity

1.90 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.315

HZ Position Inner

Controversial No

Discovery

Year 2013

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#742of 1978

top 37.5%

This planet

2.80R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-912 b 2.80 R⊕ Kepler-276 d 2.80 R⊕ Kepler-694 b 2.80 R⊕

Metric	Earth	Kepler-350 d	Jupiter
Radius (R⊕)	1.00	2.80	11.21
Mass (M⊕)	1.00	14.90	317.83
Density (g/cm³)	5.51	2.69	1.33
Surface Gravity (g)	1.00	1.90	2.53
Insolation (S⊕)	1.00	83.24	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	14.900 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 120498491

Gaia DR2

Gaia DR2 2100338792724606720

Gaia DR3

Gaia DR3 2100338792725538048

System

Kepler-350

Percentile among Sub-Neptune cohort

Radius 2.800 R⊕ · percentile 62 / cohort 1978

Mass 14.900 M⊕ · percentile 93 / cohort 1978

Orbital period 26.14 d · percentile 70 / cohort 1946

Distance 956.86 pc · percentile 75 / cohort 1975

ESI 0.315 · percentile 32 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

26.136 days

Semi-major axis

0.1786 AU

Eccentricity

0.000

Inclination

89.65 °

Year Length

A year here lasts approximately 26.14 Earth days (7.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1786 AU.

Transit Fingerprint

Depth

0.036 %

Duration

6.613 h

Impact parameter b

0.842

Rp / R★

0.018044

Transit midpoint (BJD)

2,454,964.6192

Photometric dip

Transit produces a flux drop of 362 ppm lasting ≈ 6.61 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018044

Semi-major axis / stellar radius

30.200

Impact parameter (b)

0.842

Transit mid-time (BJD)

2,454,964.6192

Angular separation (arcsec)

0.18700

Eq. Temperature

782K

(509 °C)

Insolation (S⊕)

83.24

Earth = 1.00

Earth Similarity (ESI)

0.315

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

Discovery Paper

Primary reference

Xie 2014

Instrument

Kepler CCD Array

Publication

2014-02

Observation locale

Space

Discovery cohort

Planets confirmed in 2013 at Kepler (12 shown).

Kepler-69 c · Super-Earth Kepler-61 b · Sub-Neptune Kepler-62 e · Super-Earth KOI-351 f · Sub-Neptune Kepler-62 f · Super-Earth KOI-351 e · Sub-Neptune Kepler-1704 b · Gas Giant Kepler-37 d · Sub-Neptune Kepler-282 e · Sub-Neptune KOI-351 h · Gas Giant KOI-351 d · Sub-Neptune Kepler-114 c · Super-Earth

Host System: Kepler-350

Spectral Class

F-type yellow-white

Effective Temperature

6,492 K — hotter than the Sun (5,778 K)

Estimated Age

4.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.250 R☉

Stellar Mass

1.000 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.240 dex

Stellar density

0.690 g/cm³

Metallicity ratio

[M/H]

Distance

956.86 parsec

Light-years 3,120.85 ly

V-band magnitude

13.97 mag

Voyager-speed travel 55,036,240 yr

Multi-band Host Photometry — 17 bands

Astrometric Data

Parallax

1.016 mas

Total Proper Motion

4.330 mas/yr

PM Right Ascension

-2.72 mas/yr

PM Declination

-3.37 mas/yr

Galactic Cartesian (pc)

x = 0.205 · y = -0.742 · z = 0.639

Equatorial (J2000)

RA 285.41958° · Dec 39.70610°

Galactic ℓ, b

70.173° · 15.113°

Ecliptic λ, β

295.628° · 61.780°

HTM-20 index

-476264738