Key parameters at a glance

A radius of 11.25 Earth radii
A mass of 203.00 Earth masses
Surface gravity around 1.60 g
An orbital period of 331.603 days
Semi-major axis 0.9706 AU
Equilibrium temperature 294 K (21 °C)
Distance from Earth 2,766.63 light-years
Earth Similarity Index 0.459
Travel time at Voyager 1 speed 48,789,541 years

Context from the literature

Kepler-90h is an exoplanet orbiting within the habitable zone of the early G-type main sequence star Kepler-90, the outermost of eight such planets discovered by NASA's Kepler spacecraft. It is located about 2,840 light-years, from Earth in the constellation Draco. The exoplanet was found by using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured.

Excerpted from Wikipedia · full article

7 siblings around KOI-351

KOI-351 h shares its host star with 7 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
KOI-351 b	Super-Earth	1.31	2.27	7.008	1,062	2013
KOI-351 c	Rocky Terrestrial	1.19	1.81	8.719	987	2013
Kepler-90 i	Super-Earth	1.32	2.30	14.449	709	2017
KOI-351 d	Sub-Neptune	2.87	8.60	59.737	520	2013
KOI-351 e	Sub-Neptune	2.66	7.56	91.939	450	2013
KOI-351 f	Sub-Neptune	2.88	8.65	124.914	407	2013
KOI-351 g	Neptune-like	7.72	15.00	210.735	342	2013
KOI-351 h this	Gas Giant	11.25	203.00	331.603	294	2013

KOI-351 h Planet Profile

Physical Specs

Radius

11.25 R⊕

Radius (Jupiter)

1.004 R♃

Mass

203.00 M⊕

Mass (Jupiter)

0.639 M♃

Density

0.91 g/cm³

Surface Gravity

1.60 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.459

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

#1624of 1771

top 91.6%

This planet

11.25R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TOI-2537 b 11.25 R⊕ TIC 172900988 b 11.25 R⊕ TOI-2449 b 11.24 R⊕

Metric	Earth	KOI-351 h	Jupiter
Radius (R⊕)	1.00	11.25	11.21
Mass (M⊕)	1.00	203.00	317.83
Density (g/cm³)	5.51	0.91	1.33
Surface Gravity (g)	1.00	1.60	2.53
Insolation (S⊕)	1.00	1.85	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	203.000 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	235.750 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 267667295

Gaia DR2

Gaia DR2 2132193431285570304

Gaia DR3

Gaia DR3 2132193431285570304

System

KOI-351

Percentile among Gas Giant cohort

Radius 11.252 R⊕ · percentile 8 / cohort 1771

Mass 203.000 M⊕ · percentile 20 / cohort 1747

Orbital period 331.60 d · percentile 62 / cohort 1533

Distance 848.25 pc · percentile 84 / cohort 1759

ESI 0.459 · percentile 99 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

331.603 days

Semi-major axis

0.9706 AU

Eccentricity

0.028

Inclination

89.93 °

Year Length

A year here lasts approximately 331.60 Earth days (90.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.9706 AU.

Transit Fingerprint

Depth

0.832 %

Duration

14.404 h

Impact parameter b

0.549

Rp / R★

0.083115

Transit midpoint (BJD)

2,454,973.5006

Photometric dip

Transit produces a flux drop of 8,322 ppm lasting ≈ 14.40 h.

Extended Orbital Architecture

Planet / star radius ratio

0.083115

Semi-major axis / stellar radius

190.456

Impact parameter (b)

0.549

RV semi-amplitude (K)

20.341 m/s

Transit mid-time (BJD)

2,454,973.5006

Long. of periastron (ω)

119.00°

Angular separation (arcsec)

1.14000

Eq. Temperature

294K

(21 °C)

Insolation (S⊕)

1.85

Earth = 1.00

Earth Similarity (ESI)

0.459

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.

Detection Signatures

Transit photometry

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

Radial velocity

Stellar wobble has been measured spectroscopically.

Transit timing variations

Gravitational interactions from neighbours have been detected.

Discovery Paper

Primary reference

Cabrera et al. 2014

Instrument

Kepler CCD Array

Publication

2014-01

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 d · Sub-Neptune Kepler-114 c · Super-Earth Kepler-396 b · Sub-Neptune

Host System: KOI-351

Spectral Class

F-type yellow-white

Effective Temperature

6,031 K — hotter than the Sun (5,778 K)

Estimated Age

0.53 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.185 R☉

Stellar Mass

1.242 M☉

Metallicity [Fe/H]

0.08

Extended Stellar Properties

Surface gravity (log g)

4.270 dex

Stellar density

1.189 g/cm³

Rotational v·sin i

4.60 km/s

Metallicity ratio

[M/H]

Distance

848.25 parsec

Light-years 2,766.63 ly

V-band magnitude

13.88 mag

Voyager-speed travel 48,789,541 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.150 mas

Total Proper Motion

5.432 mas/yr

PM Right Ascension

-4.38 mas/yr

PM Declination

-3.21 mas/yr

Galactic Cartesian (pc)

x = 0.163 · y = -0.631 · z = 0.758

Equatorial (J2000)

RA 284.43346° · Dec 49.30512°

Galactic ℓ, b

79.269° · 19.256°

Ecliptic λ, β

300.329° · 71.228°

HTM-20 index

-419849693

Wikipedia → Image: Wikimedia Commons · Celestia GNU screenshot by Piquito Veloz · CC BY-SA 4.0