Key parameters at a glance

A radius of 11.99 Earth radii
An orbital period of 4.454 days
Semi-major axis 0.0495 AU
Equilibrium temperature 1,017 K (744 °C)
Distance from Earth 2,451.96 light-years
Earth Similarity Index 0.060
Travel time at Voyager 1 speed 43,240,357 years

Kepler-548 b Planet Profile

Physical Specs

Radius

11.99 R⊕

Radius (Jupiter)

1.070 R♃

Mass

— M⊕

Mass (Jupiter)

— M♃

Density

— g/cm³

Surface Gravity

— g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.060

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

#1517of 1771

top 85.6%

This planet

11.99R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

WASP-21 b 11.99 R⊕ NGTS-20 b 11.99 R⊕ TOI-2005 b 11.99 R⊕

Metric	Earth	Kepler-548 b	Jupiter
Radius (R⊕)	1.00	11.99	11.21
Mass (M⊕)	1.00	—	317.83
Density (g/cm³)	5.51	—	1.33
Surface Gravity (g)	1.00	—	2.53
Insolation (S⊕)	1.00	237.04	0.037

Star Catalogue Identifiers

TIC

TIC 269269546

Gaia DR2

Gaia DR2 2085193569812098944

Gaia DR3

Gaia DR3 2085193569812098944

System

Kepler-548

Percentile among Gas Giant cohort

Radius 11.990 R⊕ · percentile 14 / cohort 1771

Orbital period 4.45 d · percentile 33 / cohort 1533

Distance 751.78 pc · percentile 82 / cohort 1759

ESI 0.060 · percentile 9 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

4.454 days

Semi-major axis

0.0495 AU

Eccentricity

0.000

Inclination

88.16 °

Year Length

A year here lasts approximately 4.45 Earth days (1.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0495 AU.

Transit Fingerprint

Depth

1.604 %

Duration

2.320 h

Impact parameter b

0.489

Rp / R★

0.122209

Transit midpoint (BJD)

2,455,005.8202

Photometric dip

Transit produces a flux drop of 16,042 ppm lasting ≈ 2.32 h.

Extended Orbital Architecture

Planet / star radius ratio

0.122209

Semi-major axis / stellar radius

14.918

Impact parameter (b)

0.489

Transit mid-time (BJD)

2,455,005.8202

Angular separation (arcsec)

0.06580

Eq. Temperature

1,017K

(744 °C)

Insolation (S⊕)

237.04

Earth = 1.00

Earth Similarity (ESI)

0.060

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-548

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,535 K — cooler than the Sun (5,778 K)

Estimated Age

4.37 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.900 R☉

Stellar Mass

0.930 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.500 dex

Stellar density

3.166 g/cm³

Metallicity ratio

[Fe/H]

Distance

751.78 parsec

Light-years 2,451.96 ly

V-band magnitude

15.27 mag

Voyager-speed travel 43,240,357 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.302 mas

Total Proper Motion

15.103 mas/yr

PM Right Ascension

-0.43 mas/yr

PM Declination

-15.10 mas/yr

Galactic Cartesian (pc)

x = 0.350 · y = -0.608 · z = 0.713

Equatorial (J2000)

RA 299.90592° · Dec 45.43961°

Galactic ℓ, b

80.269° · 8.154°

Ecliptic λ, β

321.864° · 63.593°

HTM-20 index

-1139262339