Key parameters at a glance

A radius of 1.12 Earth radii
A mass of 1.46 Earth masses
Surface gravity around 1.16 g
An orbital period of 2.761 days
Semi-major axis 0.0414 AU
Equilibrium temperature 2,017 K (1744 °C)
Distance from Earth 2,655.16 light-years
Earth Similarity Index 0.141
Travel time at Voyager 1 speed 46,823,819 years

Kepler-1288 b Planet Profile

Physical Specs

Radius

1.12 R⊕

Radius (Jupiter)

0.100 R♃

Mass

1.46 M⊕

Mass (Jupiter)

0.005 M♃

Density

5.71 g/cm³

Surface Gravity

1.16 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.141

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

#193of 570

top 33.7%

This planet

1.12R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1082 b 1.12 R⊕ Kepler-334 b 1.12 R⊕ Kepler-381 c 1.12 R⊕

Metric	Earth	Kepler-1288 b	Jupiter
Radius (R⊕)	1.00	1.12	11.21
Mass (M⊕)	1.00	1.46	317.83
Density (g/cm³)	5.51	5.71	1.33
Surface Gravity (g)	1.00	1.16	2.53
Insolation (S⊕)	1.00	1,342.50	0.037

Star Catalogue Identifiers

TIC

TIC 120577770

Gaia DR2

Gaia DR2 2103960721465412864

Gaia DR3

Gaia DR3 2103960721465412864

System

Kepler-1288

Percentile among Rocky Terrestrial cohort

Radius 1.120 R⊕ · percentile 64 / cohort 570

Mass 1.460 M⊕ · percentile 59 / cohort 570

Orbital period 2.76 d · percentile 31 / cohort 567

Distance 814.08 pc · percentile 86 / cohort 566

ESI 0.141 · percentile 4 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

2.761 days

Semi-major axis

0.0414 AU

Eccentricity

0.000

Inclination

87.58 °

Year Length

A year here lasts approximately 2.76 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0413 AU.

Transit Fingerprint

Depth

0.007 %

Duration

3.662 h

Impact parameter b

0.908

Rp / R★

0.007724

Transit midpoint (BJD)

2,454,964.6101

Photometric dip

Transit produces a flux drop of 68 ppm lasting ≈ 3.66 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007724

Semi-major axis / stellar radius

2.560

Impact parameter (b)

0.908

Transit mid-time (BJD)

2,454,964.6101

Angular separation (arcsec)

0.05080

Eq. Temperature

2,017K

(1744 °C)

Insolation (S⊕)

1,342.50

Earth = 1.00

Earth Similarity (ESI)

0.141

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-1288

Spectral Class

F-type yellow-white

Effective Temperature

6,132 K — hotter than the Sun (5,778 K)

Estimated Age

2.88 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.290 R☉

Stellar Mass

1.200 M☉

Metallicity [Fe/H]

0.14

Extended Stellar Properties

Surface gravity (log g)

4.290 dex

Stellar density

0.650 g/cm³

Metallicity ratio

[Fe/H]

Distance

814.08 parsec

Light-years 2,655.16 ly

V-band magnitude

13.20 mag

Voyager-speed travel 46,823,819 yr

Multi-band Host Photometry — 15 bands

Astrometric Data

Parallax

1.400 mas

Total Proper Motion

0.627 mas/yr

PM Right Ascension

0.29 mas/yr

PM Declination

0.56 mas/yr

Galactic Cartesian (pc)

x = 0.203 · y = -0.720 · z = 0.664

Equatorial (J2000)

RA 285.71350° · Dec 41.60588°

Galactic ℓ, b

72.079° · 15.643°

Ecliptic λ, β

297.065° · 63.576°

HTM-20 index

1990636055