Key parameters at a glance

A radius of 2.64 Earth radii
A mass of 7.46 Earth masses
Surface gravity around 1.07 g
An orbital period of 124.829 days
Semi-major axis 0.4679 AU
Equilibrium temperature 350 K (77 °C)
Distance from Earth 2,844.99 light-years
Earth Similarity Index 0.653
Travel time at Voyager 1 speed 50,171,401 years

Kepler-1548 b Planet Profile

Physical Specs

Radius

2.64 R⊕

Radius (Jupiter)

0.236 R♃

Mass

7.46 M⊕

Mass (Jupiter)

0.024 M♃

Density

2.23 g/cm³

Surface Gravity

1.07 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.653

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

#958of 1978

top 48.4%

This planet

2.64R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-421 b 2.64 R⊕ Kepler-635 b 2.64 R⊕ Kepler-571 b 2.64 R⊕

Metric	Earth	Kepler-1548 b	Jupiter
Radius (R⊕)	1.00	2.64	11.21
Mass (M⊕)	1.00	7.46	317.83
Density (g/cm³)	5.51	2.23	1.33
Surface Gravity (g)	1.00	1.07	2.53
Insolation (S⊕)	1.00	1.93	0.037

Star Catalogue Identifiers

TIC

TIC 158487028

Gaia DR2

Gaia DR2 2130318420364920192

Gaia DR3

Gaia DR3 2130318420364920192

System

Kepler-1548

Percentile among Sub-Neptune cohort

Radius 2.640 R⊕ · percentile 51 / cohort 1978

Mass 7.460 M⊕ · percentile 47 / cohort 1978

Orbital period 124.83 d · percentile 96 / cohort 1946

Distance 872.28 pc · percentile 71 / cohort 1975

ESI 0.653 · percentile 88 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

124.829 days

Semi-major axis

0.4679 AU

Eccentricity

0.000

Inclination

89.96 °

Year Length

A year here lasts approximately 124.83 Earth days (34.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4679 AU.

Transit Fingerprint

Depth

0.065 %

Duration

6.334 h

Impact parameter b

0.164

Rp / R★

0.024925

Transit midpoint (BJD)

2,455,041.7846

Photometric dip

Transit produces a flux drop of 648 ppm lasting ≈ 6.33 h.

Extended Orbital Architecture

Planet / star radius ratio

0.024925

Semi-major axis / stellar radius

149.900

Impact parameter (b)

0.164

Transit mid-time (BJD)

2,455,041.7846

Angular separation (arcsec)

0.53600

Eq. Temperature

350K

(77 °C)

Insolation (S⊕)

1.93

Earth = 1.00

Earth Similarity (ESI)

0.653

0 = alien, 1 = Earth-identical

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

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-1548

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,706 K — cooler than the Sun (5,778 K)

Estimated Age

4.37 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.970 R☉

Stellar Mass

0.990 M☉

Metallicity [Fe/H]

0.05

Extended Stellar Properties

Surface gravity (log g)

4.460 dex

Stellar density

4.088 g/cm³

Metallicity ratio

[Fe/H]

Distance

872.28 parsec

Light-years 2,844.99 ly

V-band magnitude

15.32 mag

Voyager-speed travel 50,171,401 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.118 mas

Total Proper Motion

20.066 mas/yr

PM Right Ascension

-9.23 mas/yr

PM Declination

-17.82 mas/yr

Galactic Cartesian (pc)

x = 0.208 · y = -0.662 · z = 0.720

Equatorial (J2000)

RA 287.47118° · Dec 46.08057°

Galactic ℓ, b

76.882° · 16.190°

Ecliptic λ, β

303.009° · 67.528°

HTM-20 index

-1735950582