Key parameters at a glance

A radius of 4.77 Earth radii
A mass of 20.40 Earth masses
Surface gravity around 0.90 g
An orbital period of 160.130 days
Semi-major axis 0.6276 AU
Equilibrium temperature 450 K (177 °C)
Distance from Earth 6,008.22 light-years
Earth Similarity Index 0.415
Travel time at Voyager 1 speed 105,954,910 years

Kepler-1527 b Planet Profile

Physical Specs

Radius

4.77 R⊕

Radius (Jupiter)

0.426 R♃

Mass

20.40 M⊕

Mass (Jupiter)

0.064 M♃

Density

1.03 g/cm³

Surface Gravity

0.90 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.415

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

#415of 574

top 72.1%

This planet

4.77R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

Kepler-502 b 4.77 R⊕ HD 153557 b 4.77 R⊕ HD 144899 b 4.77 R⊕

Metric	Earth	Kepler-1527 b	Jupiter
Radius (R⊕)	1.00	4.77	11.21
Mass (M⊕)	1.00	20.40	317.83
Density (g/cm³)	5.51	1.03	1.33
Surface Gravity (g)	1.00	0.90	2.53
Insolation (S⊕)	1.00	7.81	0.037

Star Catalogue Identifiers

TIC

TIC 273132601

Gaia DR2

Gaia DR2 2080247996570836736

Gaia DR3

Gaia DR3 2080247996570836736

System

Kepler-1527

Percentile among Neptune-like cohort

Radius 4.770 R⊕ · percentile 27 / cohort 574

Mass 20.400 M⊕ · percentile 31 / cohort 574

Orbital period 160.13 d · percentile 87 / cohort 524

Distance 1,842.13 pc · percentile 88 / cohort 572

ESI 0.415 · percentile 75 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period

160.130 days

Semi-major axis

0.6276 AU

Eccentricity

0.000

Inclination

89.24 °

Year Length

A year here lasts approximately 160.13 Earth days (43.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.6276 AU.

Transit Fingerprint

Depth

0.118 %

Duration

13.176 h

Impact parameter b

0.634

Rp / R★

0.032553

Transit midpoint (BJD)

2,455,036.4804

Photometric dip

Transit produces a flux drop of 1,183 ppm lasting ≈ 13.18 h.

Extended Orbital Architecture

Planet / star radius ratio

0.032553

Semi-major axis / stellar radius

59.300

Impact parameter (b)

0.634

Transit mid-time (BJD)

2,455,036.4804

Angular separation (arcsec)

0.34100

Eq. Temperature

450K

(177 °C)

Insolation (S⊕)

7.81

Earth = 1.00

Earth Similarity (ESI)

0.415

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.

Detection Signatures

Transit photometry

A transit dip has been observed from at least one telescope.

Transit timing variations

Gravitational interactions from neighbours have been detected.

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-1527

Spectral Class

F-type yellow-white

Effective Temperature

6,224 K — hotter than the Sun (5,778 K)

Estimated Age

2.82 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.320 R☉

Stellar Mass

1.210 M☉

Metallicity [Fe/H]

0.07

Extended Stellar Properties

Surface gravity (log g)

4.270 dex

Stellar density

0.319 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,842.13 parsec

Light-years 6,008.22 ly

V-band magnitude

15.16 mag

Voyager-speed travel 105,954,910 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.515 mas

Total Proper Motion

4.339 mas/yr

PM Right Ascension

2.66 mas/yr

PM Declination

-3.42 mas/yr

Galactic Cartesian (pc)

x = 0.319 · y = -0.616 · z = 0.720

Equatorial (J2000)

RA 297.41445° · Dec 46.06081°

Galactic ℓ, b

79.938° · 9.971°

Ecliptic λ, β

318.895° · 64.914°

HTM-20 index

-2145839840