Key parameters at a glance

A radius of 2.81 Earth radii
A mass of 8.30 Earth masses
Surface gravity around 1.05 g
An orbital period of 109.647 days
Semi-major axis 0.4382 AU
Equilibrium temperature 428 K (155 °C)
Distance from Earth 3,041.23 light-years
Earth Similarity Index 0.542
Travel time at Voyager 1 speed 53,632,063 years

Kepler-1333 b Planet Profile

Physical Specs

Radius

2.81 R⊕

Radius (Jupiter)

0.251 R♃

Mass

8.30 M⊕

Mass (Jupiter)

0.026 M♃

Density

2.06 g/cm³

Surface Gravity

1.05 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.542

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#732of 1978

top 37.0%

This planet

2.81R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-752 b 2.81 R⊕ Kepler-1234 b 2.81 R⊕ Kepler-892 b 2.81 R⊕

Metric	Earth	Kepler-1333 b	Jupiter
Radius (R⊕)	1.00	2.81	11.21
Mass (M⊕)	1.00	8.30	317.83
Density (g/cm³)	5.51	2.06	1.33
Surface Gravity (g)	1.00	1.05	2.53
Insolation (S⊕)	1.00	3.30	0.037

Star Catalogue Identifiers

TIC

TIC 138219367

Gaia DR2

Gaia DR2 2077383395124052096

Gaia DR3

Gaia DR3 2077383395124052096

System

Kepler-1333

Percentile among Sub-Neptune cohort

Radius 2.810 R⊕ · percentile 63 / cohort 1978

Mass 8.300 M⊕ · percentile 57 / cohort 1978

Orbital period 109.65 d · percentile 95 / cohort 1946

Distance 932.45 pc · percentile 74 / cohort 1975

ESI 0.542 · percentile 76 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

109.647 days

Semi-major axis

0.4382 AU

Eccentricity

0.000

Inclination

89.45 °

Year Length

A year here lasts approximately 109.65 Earth days (30.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4382 AU.

Transit Fingerprint

Depth

0.090 %

Duration

6.248 h

Impact parameter b

0.020

Rp / R★

0.028270

Transit midpoint (BJD)

2,455,023.6758

Photometric dip

Transit produces a flux drop of 900 ppm lasting ≈ 6.25 h.

Extended Orbital Architecture

Planet / star radius ratio

0.028270

Semi-major axis / stellar radius

137.760

Impact parameter (b)

0.020

Transit mid-time (BJD)

2,455,023.6758

Angular separation (arcsec)

0.47000

Eq. Temperature

428K

(155 °C)

Insolation (S⊕)

3.30

Earth = 1.00

Earth Similarity (ESI)

0.542

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

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-1333

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,628 K — cooler than the Sun (5,778 K)

Estimated Age

4.57 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.920 R☉

Stellar Mass

0.940 M☉

Metallicity [Fe/H]

-0.04

Extended Stellar Properties

Surface gravity (log g)

4.490 dex

Stellar density

4.113 g/cm³

Metallicity ratio

[Fe/H]

Distance

932.45 parsec

Light-years 3,041.23 ly

V-band magnitude

15.42 mag

Voyager-speed travel 53,632,063 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.045 mas

Total Proper Motion

11.653 mas/yr

PM Right Ascension

-6.77 mas/yr

PM Declination

-9.48 mas/yr

Galactic Cartesian (pc)

x = 0.301 · y = -0.691 · z = 0.658

Equatorial (J2000)

RA 293.52758° · Dec 41.11139°

Galactic ℓ, b

74.159° · 10.119°

Ecliptic λ, β

308.933° · 61.408°

HTM-20 index

1887766893