Key parameters at a glance

A radius of 1.18 Earth radii
A mass of 1.76 Earth masses
Surface gravity around 1.26 g
An orbital period of 7.467 days
Semi-major axis 0.0806 AU
Equilibrium temperature 1,035 K (762 °C)
Distance from Earth 1,934.19 light-years
Earth Similarity Index 0.301
Travel time at Voyager 1 speed 34,109,437 years

Kepler-1248 b Planet Profile

Physical Specs

Radius

1.18 R⊕

Radius (Jupiter)

0.105 R♃

Mass

1.76 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.89 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.301

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

#117of 570

top 20.4%

This planet

1.18R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

Kepler-1430 b 1.18 R⊕ Kepler-1512 b 1.18 R⊕ Kepler-332 d 1.18 R⊕

Metric	Earth	Kepler-1248 b	Jupiter
Radius (R⊕)	1.00	1.18	11.21
Mass (M⊕)	1.00	1.76	317.83
Density (g/cm³)	5.51	5.89	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	271.25	0.037

Star Catalogue Identifiers

TIC

TIC 298897924

Gaia DR2

Gaia DR2 2133405707276892288

System

Kepler-1248

Percentile among Rocky Terrestrial cohort

Radius 1.180 R⊕ · percentile 77 / cohort 570

Mass 1.760 M⊕ · percentile 71 / cohort 570

Orbital period 7.47 d · percentile 69 / cohort 567

Distance 593.03 pc · percentile 72 / cohort 566

ESI 0.301 · percentile 38 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

7.467 days

Semi-major axis

0.0806 AU

Eccentricity

0.000

Inclination

87.99 °

Year Length

A year here lasts approximately 7.47 Earth days (2.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0806 AU.

Transit Fingerprint

Depth

0.008 %

Duration

3.713 h

Impact parameter b

0.891

Rp / R★

0.008618

Transit midpoint (BJD)

2,454,969.3854

Photometric dip

Transit produces a flux drop of 76 ppm lasting ≈ 3.71 h.

Extended Orbital Architecture

Planet / star radius ratio

0.008618

Semi-major axis / stellar radius

6.620

Impact parameter (b)

0.891

Transit mid-time (BJD)

2,454,969.3854

Angular separation (arcsec)

0.13600

Eq. Temperature

1,035K

(762 °C)

Insolation (S⊕)

271.25

Earth = 1.00

Earth Similarity (ESI)

0.301

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-1248

Spectral Class

F-type yellow-white

Effective Temperature

6,149 K — hotter than the Sun (5,778 K)

Estimated Age

1.51 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.210 R☉

Stellar Mass

1.210 M☉

Metallicity [Fe/H]

0.24

Extended Stellar Properties

Surface gravity (log g)

4.360 dex

Stellar density

0.908 g/cm³

Metallicity ratio

[Fe/H]

Distance

593.03 parsec

Light-years 1,934.19 ly

V-band magnitude

12.90 mag

Voyager-speed travel 34,109,437 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Total Proper Motion

11.448 mas/yr

PM Right Ascension

-4.41 mas/yr

PM Declination

-10.56 mas/yr

Galactic Cartesian (pc)

x = 0.194 · y = -0.594 · z = 0.781

Equatorial (J2000)

RA 288.05922° · Dec 51.35446°

Galactic ℓ, b

82.148° · 17.804°

Ecliptic λ, β

309.590° · 72.317°

HTM-20 index

124786380