Key parameters at a glance

A radius of 1.71 Earth radii
A mass of 10.50 Earth masses
Surface gravity around 3.59 g
An orbital period of 3.743 days
Semi-major axis 0.0512 AU
Equilibrium temperature 1,486 K (1213 °C)
Distance from Earth 1,555.93 light-years
Earth Similarity Index 0.165
Travel time at Voyager 1 speed 27,438,890 years

3 siblings around KOI-94

KOI-94 b shares its host star with 3 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
KOI-94 b this	Super-Earth	1.71	10.50	3.743	1,486	2013
KOI-94 c	Neptune-like	4.32	15.60	10.424	1,012	2013
KOI-94 d	Gas Giant	11.27	106.00	22.343	806	2013
KOI-94 e	Neptune-like	6.56	35.00	54.320	584	2013

KOI-94 b Planet Profile

Physical Specs

Radius

1.71 R⊕

Radius (Jupiter)

0.153 R♃

Mass

10.50 M⊕

Mass (Jupiter)

0.033 M♃

Density

10.10 g/cm³

Surface Gravity

3.59 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.165

HZ Position Inner

Controversial No

Discovery

Year 2013

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#385of 1176

top 32.7%

This planet

1.71R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-1167 b 1.71 R⊕ Kepler-414 b 1.71 R⊕ TOI-260 b 1.71 R⊕

Metric	Earth	KOI-94 b	Jupiter
Radius (R⊕)	1.00	1.71	11.21
Mass (M⊕)	1.00	10.50	317.83
Density (g/cm³)	5.51	10.10	1.33
Surface Gravity (g)	1.00	3.59	2.53
Insolation (S⊕)	1.00	1,053.18	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	10.500 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	5.757 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 273231214

Gaia DR2

Gaia DR2 2076970047474270208

Gaia DR3

Gaia DR3 2076970047474270208

System

KOI-94

Percentile among Super-Earth cohort

Radius 1.710 R⊕ · percentile 66 / cohort 1176

Mass 10.500 M⊕ · percentile 97 / cohort 1176

Orbital period 3.74 d · percentile 29 / cohort 1164

Distance 477.05 pc · percentile 45 / cohort 1171

ESI 0.165 · percentile 6 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

3.743 days

Semi-major axis

0.0512 AU

Eccentricity

0.250

Inclination

89.30 °

Year Length

A year here lasts approximately 3.74 Earth days (1.0% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0512 AU.

Transit Fingerprint

Depth

0.013 %

Duration

3.689 h

Impact parameter b

0.088

Rp / R★

0.010310

Transit midpoint (BJD)

2,454,964.6175

Photometric dip

Transit produces a flux drop of 126 ppm lasting ≈ 3.69 h.

Extended Orbital Architecture

Planet / star radius ratio

0.010310

Semi-major axis / stellar radius

7.250

Impact parameter (b)

0.088

RV semi-amplitude (K)

3.300 m/s

Transit mid-time (BJD)

2,454,964.6175

Angular separation (arcsec)

0.10700

Eq. Temperature

1,486K

(1213 °C)

Insolation (S⊕)

1,053.18

Earth = 1.00

Earth Similarity (ESI)

0.165

0 = alien, 1 = Earth-identical

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

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Radial velocity

Stellar wobble has been measured spectroscopically.

Discovery Paper

Primary reference

Weiss et al. 2013

Instrument

Kepler CCD Array

Publication

2013-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2013 at Kepler (12 shown).

Kepler-69 c · Super-Earth Kepler-61 b · Sub-Neptune Kepler-62 e · Super-Earth KOI-351 f · Sub-Neptune Kepler-62 f · Super-Earth KOI-351 e · Sub-Neptune Kepler-1704 b · Gas Giant Kepler-37 d · Sub-Neptune Kepler-282 e · Sub-Neptune KOI-351 h · Gas Giant KOI-351 d · Sub-Neptune Kepler-114 c · Super-Earth

Host System: KOI-94

Spectral Class

F-type yellow-white

Effective Temperature

6,182 K — hotter than the Sun (5,778 K)

Estimated Age

3.16 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.520 R☉

Stellar Mass

1.277 M☉

Metallicity [Fe/H]

0.02

Extended Stellar Properties

Surface gravity (log g)

4.181 dex

Stellar density

0.771 g/cm³

Rotational v·sin i

7.30 km/s

Metallicity ratio

[Fe/H]

Distance

477.05 parsec

Light-years 1,555.93 ly

V-band magnitude

12.31 mag

Voyager-speed travel 27,438,890 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

2.068 mas

Total Proper Motion

2.394 mas/yr

PM Right Ascension

1.97 mas/yr

PM Declination

1.36 mas/yr

Galactic Cartesian (pc)

x = 0.342 · y = -0.661 · z = 0.668

Equatorial (J2000)

RA 297.33307° · Dec 41.89112°

Galactic ℓ, b

76.226° · 7.983°

Ecliptic λ, β

315.053° · 61.124°

HTM-20 index

-847074365