Key parameters at a glance

A radius of 3.56 Earth radii
A mass of 12.40 Earth masses
Surface gravity around 0.98 g
An orbital period of 6.105 days
Semi-major axis 0.0583 AU
Equilibrium temperature 784 K (511 °C)
Distance from Earth 3,774.31 light-years
Earth Similarity Index 0.280
Travel time at Voyager 1 speed 66,559,950 years

Kepler-734 b Planet Profile

Physical Specs

Radius

3.56 R⊕

Radius (Jupiter)

0.318 R♃

Mass

12.40 M⊕

Mass (Jupiter)

0.039 M♃

Density

1.51 g/cm³

Surface Gravity

0.98 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.280

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

#151of 1978

top 7.6%

This planet

3.56R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-7384 b 3.56 R⊕ KOBE-1 c 3.56 R⊕ K2-178 b 3.56 R⊕

Metric	Earth	Kepler-734 b	Jupiter
Radius (R⊕)	1.00	3.56	11.21
Mass (M⊕)	1.00	12.40	317.83
Density (g/cm³)	5.51	1.51	1.33
Surface Gravity (g)	1.00	0.98	2.53
Insolation (S⊕)	1.00	89.25	0.037

Star Catalogue Identifiers

TIC

TIC 272845785

Gaia DR2

Gaia DR2 2080165846735990144

Gaia DR3

Gaia DR3 2080165846735990144

System

Kepler-734

Percentile among Sub-Neptune cohort

Radius 3.560 R⊕ · percentile 92 / cohort 1978

Mass 12.400 M⊕ · percentile 85 / cohort 1978

Orbital period 6.10 d · percentile 18 / cohort 1946

Distance 1,157.21 pc · percentile 85 / cohort 1975

ESI 0.280 · percentile 23 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

6.105 days

Semi-major axis

0.0583 AU

Eccentricity

0.000

Inclination

89.78 °

Year Length

A year here lasts approximately 6.10 Earth days (1.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0583 AU.

Transit Fingerprint

Depth

0.209 %

Duration

4.676 h

Impact parameter b

0.018

Rp / R★

0.042238

Transit midpoint (BJD)

2,455,002.5733

Photometric dip

Transit produces a flux drop of 2,090 ppm lasting ≈ 4.68 h.

Extended Orbital Architecture

Planet / star radius ratio

0.042238

Semi-major axis / stellar radius

10.407

Impact parameter (b)

0.018

Transit mid-time (BJD)

2,455,002.5733

Angular separation (arcsec)

0.05040

Eq. Temperature

784K

(511 °C)

Insolation (S⊕)

89.25

Earth = 1.00

Earth Similarity (ESI)

0.280

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-734

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,326 K — cooler than the Sun (5,778 K)

Estimated Age

2.34 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.780 R☉

Stellar Mass

0.850 M☉

Metallicity [Fe/H]

-0.17

Extended Stellar Properties

Surface gravity (log g)

4.590 dex

Stellar density

0.572 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,157.21 parsec

Light-years 3,774.31 ly

V-band magnitude

14.47 mag

Voyager-speed travel 66,559,950 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.836 mas

Total Proper Motion

4.363 mas/yr

PM Right Ascension

-4.11 mas/yr

PM Declination

1.45 mas/yr

Galactic Cartesian (pc)

x = 0.316 · y = -0.618 · z = 0.720

Equatorial (J2000)

RA 297.04561° · Dec 46.02739°

Galactic ℓ, b

79.782° · 10.179°

Ecliptic λ, β

318.316° · 64.994°

HTM-20 index

-2138131027