Key parameters at a glance

A radius of 1.89 Earth radii
A mass of 4.23 Earth masses
Surface gravity around 1.18 g
An orbital period of 5.170 days
Semi-major axis 0.0577 AU
Equilibrium temperature 1,309 K (1036 °C)
Distance from Earth 2,896.35 light-years
Earth Similarity Index 0.205
Travel time at Voyager 1 speed 51,077,188 years

Kepler-634 b Planet Profile

Physical Specs

Radius

1.89 R⊕

Radius (Jupiter)

0.169 R♃

Mass

4.23 M⊕

Mass (Jupiter)

0.013 M♃

Density

3.44 g/cm³

Surface Gravity

1.18 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.205

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

#143of 1176

top 12.1%

This planet

1.89R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-371 b 1.89 R⊕ K2-13 b 1.89 R⊕ Kepler-171 d 1.89 R⊕

Metric	Earth	Kepler-634 b	Jupiter
Radius (R⊕)	1.00	1.89	11.21
Mass (M⊕)	1.00	4.23	317.83
Density (g/cm³)	5.51	3.44	1.33
Surface Gravity (g)	1.00	1.18	2.53
Insolation (S⊕)	1.00	808.84	0.037

Star Catalogue Identifiers

TIC

TIC 137089993

Gaia DR2

Gaia DR2 2101507470508342016

Gaia DR3

Gaia DR3 2101507470508342016

System

Kepler-634

Percentile among Super-Earth cohort

Radius 1.890 R⊕ · percentile 87 / cohort 1176

Mass 4.230 M⊕ · percentile 80 / cohort 1176

Orbital period 5.17 d · percentile 41 / cohort 1164

Distance 888.03 pc · percentile 74 / cohort 1171

ESI 0.205 · percentile 13 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

5.170 days

Semi-major axis

0.0577 AU

Eccentricity

0.000

Inclination

88.44 °

Year Length

A year here lasts approximately 5.17 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0576 AU.

Transit Fingerprint

Depth

0.021 %

Duration

4.507 h

Impact parameter b

0.300

Rp / R★

0.013544

Transit midpoint (BJD)

2,455,003.3132

Photometric dip

Transit produces a flux drop of 211 ppm lasting ≈ 4.51 h.

Extended Orbital Architecture

Planet / star radius ratio

0.013544

Semi-major axis / stellar radius

8.650

Impact parameter (b)

0.300

Transit mid-time (BJD)

2,455,003.3132

Angular separation (arcsec)

0.06490

Eq. Temperature

1,309K

(1036 °C)

Insolation (S⊕)

808.84

Earth = 1.00

Earth Similarity (ESI)

0.205

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-634

Spectral Class

F-type yellow-white

Effective Temperature

6,075 K — hotter than the Sun (5,778 K)

Estimated Age

5.37 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.240 R☉

Stellar Mass

1.030 M☉

Metallicity [Fe/H]

-0.18

Extended Stellar Properties

Surface gravity (log g)

4.260 dex

Stellar density

0.320 g/cm³

Metallicity ratio

[Fe/H]

Distance

888.03 parsec

Light-years 2,896.35 ly

V-band magnitude

13.63 mag

Voyager-speed travel 51,077,188 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.097 mas

Total Proper Motion

8.844 mas/yr

PM Right Ascension

3.84 mas/yr

PM Declination

7.97 mas/yr

Galactic Cartesian (pc)

x = 0.274 · y = -0.707 · z = 0.652

Equatorial (J2000)

RA 291.19509° · Dec 40.70274°

Galactic ℓ, b

72.981° · 11.511°

Ecliptic λ, β

305.158° · 61.580°

HTM-20 index

1616277698