Key parameters at a glance

A radius of 1.63 Earth radii
A mass of 3.29 Earth masses
Surface gravity around 1.24 g
An orbital period of 8.503 days
Semi-major axis 0.0819 AU
Equilibrium temperature 1,021 K (748 °C)
Distance from Earth 2,219.62 light-years
Earth Similarity Index 0.284
Travel time at Voyager 1 speed 39,143,033 years

1 sibling around Kepler-633

Kepler-633 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-633 b this	Super-Earth	1.63	3.29	8.503	1,021	2016
Kepler-633 c	Sub-Neptune	2.30	5.89	23.783	725	2021

Kepler-633 b Planet Profile

Physical Specs

Radius

1.63 R⊕

Radius (Jupiter)

0.145 R♃

Mass

3.29 M⊕

Mass (Jupiter)

0.010 M♃

Density

4.17 g/cm³

Surface Gravity

1.24 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.284

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

#517of 1176

top 43.9%

This planet

1.63R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-202 b 1.63 R⊕ Kepler-319 b 1.63 R⊕ Kepler-208 b 1.63 R⊕

Metric	Earth	Kepler-633 b	Jupiter
Radius (R⊕)	1.00	1.63	11.21
Mass (M⊕)	1.00	3.29	317.83
Density (g/cm³)	5.51	4.17	1.33
Surface Gravity (g)	1.00	1.24	2.53
Insolation (S⊕)	1.00	454.50	0.037

Star Catalogue Identifiers

TIC

TIC 138969239

System

Kepler-633

Percentile among Super-Earth cohort

Radius 1.630 R⊕ · percentile 55 / cohort 1176

Mass 3.290 M⊕ · percentile 50 / cohort 1176

Orbital period 8.50 d · percentile 60 / cohort 1164

Distance 680.54 pc · percentile 60 / cohort 1171

ESI 0.284 · percentile 32 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

8.503 days

Semi-major axis

0.0819 AU

Eccentricity

0.000

Inclination

86.36 °

Year Length

A year here lasts approximately 8.50 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0819 AU.

Transit Fingerprint

Depth

0.019 %

Duration

2.835 h

Impact parameter b

0.952

Rp / R★

0.012871

Transit midpoint (BJD)

2,455,003.8676

Photometric dip

Transit produces a flux drop of 189 ppm lasting ≈ 2.83 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012871

Semi-major axis / stellar radius

7.420

Impact parameter (b)

0.952

Transit mid-time (BJD)

2,455,003.8676

Angular separation (arcsec)

0.12000

Eq. Temperature

1,021K

(748 °C)

Insolation (S⊕)

454.50

Earth = 1.00

Earth Similarity (ESI)

0.284

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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-633

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,899 K — hotter than the Sun (5,778 K)

Estimated Age

6.03 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.150 R☉

Stellar Mass

1.020 M☉

Metallicity [Fe/H]

-0.05

Extended Stellar Properties

Surface gravity (log g)

4.320 dex

Stellar density

0.220 g/cm³

Metallicity ratio

[Fe/H]

Distance

680.54 parsec

Light-years 2,219.62 ly

V-band magnitude

13.81 mag

Voyager-speed travel 39,143,033 yr

Multi-band Host Photometry — 15 bands

Astrometric Data

Total Proper Motion

11.574 mas/yr

PM Right Ascension

-4.86 mas/yr

PM Declination

-10.50 mas/yr

Galactic Cartesian (pc)

x = 0.324 · y = -0.687 · z = 0.651

Equatorial (J2000)

RA 295.21733° · Dec 40.59216°

Galactic ℓ, b

74.299° · 8.746°

Ecliptic λ, β

311.049° · 60.487°

HTM-20 index

-1501632639