Key parameters at a glance

A radius of 1.53 Earth radii
A mass of 2.96 Earth masses
Surface gravity around 1.26 g
An orbital period of 11.495 days
Semi-major axis 0.1038 AU
Equilibrium temperature 1,105 K (832 °C)
Distance from Earth 1,674.57 light-years
Earth Similarity Index 0.266
Travel time at Voyager 1 speed 29,531,035 years

Kepler-1988 b Planet Profile

Physical Specs

Radius

1.53 R⊕

Radius (Jupiter)

0.137 R♃

Mass

2.96 M⊕

Mass (Jupiter)

0.009 M♃

Density

4.54 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.266

HZ Position Inner

Controversial No

Discovery

Year 2023

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#687of 1176

top 58.3%

This planet

1.53R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-228 b 1.53 R⊕ Kepler-147 b 1.53 R⊕ Kepler-296 e 1.53 R⊕

Metric	Earth	Kepler-1988 b	Jupiter
Radius (R⊕)	1.00	1.53	11.21
Mass (M⊕)	1.00	2.96	317.83
Density (g/cm³)	5.51	4.54	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	351.79	0.037

Star Catalogue Identifiers

TIC

TIC 268160366

Gaia DR2

Gaia DR2 2078996821055736960

System

Kepler-1988

Percentile among Super-Earth cohort

Radius 1.530 R⊕ · percentile 40 / cohort 1176

Mass 2.960 M⊕ · percentile 37 / cohort 1176

Orbital period 11.50 d · percentile 68 / cohort 1164

Distance 513.43 pc · percentile 48 / cohort 1171

ESI 0.266 · percentile 28 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

11.495 days

Semi-major axis

0.1038 AU

Eccentricity

0.000

Inclination

79.67 °

Year Length

A year here lasts approximately 11.50 Earth days (3.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1038 AU.

Transit Fingerprint

Depth

0.005 %

Duration

7.602 h

Impact parameter b

0.911

Rp / R★

0.007853

Transit midpoint (BJD)

2,454,974.2751

Photometric dip

Transit produces a flux drop of 51 ppm lasting ≈ 7.60 h.

Extended Orbital Architecture

Planet / star radius ratio

0.007853

Semi-major axis / stellar radius

5.080

Impact parameter (b)

0.911

Transit mid-time (BJD)

2,454,974.2751

Angular separation (arcsec)

0.20200

Eq. Temperature

1,105K

(832 °C)

Insolation (S⊕)

351.79

Earth = 1.00

Earth Similarity (ESI)

0.266

0 = alien, 1 = Earth-identical

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

Discovery Paper

Primary reference

Valizadegan et al. 2023

Instrument

Kepler CCD Array

Publication

2023-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2023 at Kepler (12 shown).

Kepler-1126 c · Super-Earth Kepler-2000 c · Super-Earth Kepler-1052 c · Sub-Neptune Kepler-311 d · Sub-Neptune Kepler-1996 c · Sub-Neptune Kepler-1162 c · Super-Earth Kepler-1996 b · Sub-Neptune Kepler-1610 c · Sub-Neptune Kepler-1801 c · Sub-Neptune Kepler-1995 b · Neptune-like Kepler-1992 b · Rocky Terrestrial Kepler-1986 b · Super-Earth

Host System: Kepler-1988

Spectral Class

F-type yellow-white

Effective Temperature

6,033 K — hotter than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

1.788 R☉

Stellar Mass

1.127 M☉

Metallicity [Fe/H]

-0.10

Extended Stellar Properties

Surface gravity (log g)

3.985 dex

Stellar density

0.019 g/cm³

Metallicity ratio

[Fe/H]

Distance

513.43 parsec

Light-years 1,674.57 ly

V-band magnitude

12.13 mag

Voyager-speed travel 29,531,035 yr