Key parameters at a glance

A radius of 1.90 Earth radii
A mass of 4.27 Earth masses
Surface gravity around 1.18 g
An orbital period of 3.007 days
Semi-major axis 0.0388 AU
Equilibrium temperature 1,122 K (849 °C)
Distance from Earth 8,094.25 light-years
Earth Similarity Index 0.244
Travel time at Voyager 1 speed 142,742,021 years

Kepler-1078 b Planet Profile

Physical Specs

Radius

1.90 R⊕

Radius (Jupiter)

0.170 R♃

Mass

4.27 M⊕

Mass (Jupiter)

0.013 M♃

Density

3.42 g/cm³

Surface Gravity

1.18 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.244

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

#125of 1176

top 10.5%

This planet

1.90R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-158 c 1.90 R⊕ Kepler-349 b 1.90 R⊕ Kepler-196 b 1.90 R⊕

Metric	Earth	Kepler-1078 b	Jupiter
Radius (R⊕)	1.00	1.90	11.21
Mass (M⊕)	1.00	4.27	317.83
Density (g/cm³)	5.51	3.42	1.33
Surface Gravity (g)	1.00	1.18	2.53
Insolation (S⊕)	1.00	373.99	0.037

Star Catalogue Identifiers

TIC

TIC 275494550

Gaia DR2

Gaia DR2 2077837390345483904

Gaia DR3

Gaia DR3 2077837390345483904

System

Kepler-1078

Percentile among Super-Earth cohort

Radius 1.900 R⊕ · percentile 88 / cohort 1176

Mass 4.270 M⊕ · percentile 81 / cohort 1176

Orbital period 3.01 d · percentile 21 / cohort 1164

Distance 2,481.71 pc · percentile 99 / cohort 1171

ESI 0.244 · percentile 22 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.007 days

Semi-major axis

0.0388 AU

Eccentricity

0.000

Inclination

70.40 °

Year Length

A year here lasts approximately 3.01 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0388 AU.

Transit Fingerprint

Depth

0.029 %

Duration

4.336 h

Impact parameter b

0.769

Rp / R★

0.018860

Transit midpoint (BJD)

2,454,964.9027

Photometric dip

Transit produces a flux drop of 286 ppm lasting ≈ 4.34 h.

Extended Orbital Architecture

Planet / star radius ratio

0.018860

Semi-major axis / stellar radius

3.760

Impact parameter (b)

0.769

Transit mid-time (BJD)

2,454,964.9027

Angular separation (arcsec)

0.01560

Eq. Temperature

1,122K

(849 °C)

Insolation (S⊕)

373.99

Earth = 1.00

Earth Similarity (ESI)

0.244

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-1078

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,612 K — cooler than the Sun (5,778 K)

Estimated Age

4.37 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.920 R☉

Stellar Mass

0.940 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.490 dex

Stellar density

0.040 g/cm³

Metallicity ratio

[Fe/H]

Distance

2,481.71 parsec

Light-years 8,094.25 ly

V-band magnitude

15.70 mag

Voyager-speed travel 142,742,021 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.374 mas

Total Proper Motion

0.471 mas/yr

PM Right Ascension

-0.25 mas/yr

PM Declination

-0.40 mas/yr

Galactic Cartesian (pc)

x = 0.288 · y = -0.672 · z = 0.683

Equatorial (J2000)

RA 293.20057° · Dec 43.05004°

Galactic ℓ, b

75.803° · 11.217°

Ecliptic λ, β

309.864° · 63.314°

HTM-20 index

-109907992