Key parameters at a glance

A radius of 1.19 Earth radii
A mass of 1.81 Earth masses
Surface gravity around 1.28 g
An orbital period of 44.201 days
Semi-major axis 0.2323 AU
Equilibrium temperature 409 K (136 °C)
Distance from Earth 1,010.66 light-years
Earth Similarity Index 0.735
Travel time at Voyager 1 speed 17,822,923 years
Almost certainly tidally locked to its host star given the close orbit

Kepler-1499 b Planet Profile

Physical Specs

Radius

1.19 R⊕

Radius (Jupiter)

0.106 R♃

Mass

1.81 M⊕

Mass (Jupiter)

0.006 M♃

Density

5.90 g/cm³

Surface Gravity

1.28 g (Earth)

Classification

Planet Type

Rocky Terrestrial

ESI Score 0.735

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

#101of 570

top 17.5%

This planet

1.19R⊕

Rocky Terrestrial median

1.01R⊕

Nearest-size peers

KOI-351 c 1.19 R⊕ Kepler-953 c 1.19 R⊕ Kepler-310 b 1.19 R⊕

Metric	Earth	Kepler-1499 b	Jupiter
Radius (R⊕)	1.00	1.19	11.21
Mass (M⊕)	1.00	1.81	317.83
Density (g/cm³)	5.51	5.90	1.33
Surface Gravity (g)	1.00	1.28	2.53
Insolation (S⊕)	1.00	7.37	0.037

Star Catalogue Identifiers

TIC

TIC 120105569

Gaia DR2

Gaia DR2 2103741437614605312

Gaia DR3

Gaia DR3 2103741437614605312

System

Kepler-1499

Percentile among Rocky Terrestrial cohort

Radius 1.190 R⊕ · percentile 80 / cohort 570

Mass 1.810 M⊕ · percentile 74 / cohort 570

Orbital period 44.20 d · percentile 98 / cohort 567

Distance 309.87 pc · percentile 42 / cohort 566

ESI 0.735 · percentile 84 / cohort 570

Orbit & Habitability

Orbital Dynamics

Period

44.201 days

Semi-major axis

0.2323 AU

Eccentricity

0.000

Inclination

89.69 °

Year Length

A year here lasts approximately 44.20 Earth days (12.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2323 AU.

Transit Fingerprint

Depth

0.024 %

Duration

4.678 h

Impact parameter b

0.348

Rp / R★

0.014443

Transit midpoint (BJD)

2,454,996.2248

Photometric dip

Transit produces a flux drop of 236 ppm lasting ≈ 4.68 h.

Extended Orbital Architecture

Planet / star radius ratio

0.014443

Semi-major axis / stellar radius

54.300

Impact parameter (b)

0.348

Transit mid-time (BJD)

2,454,996.2248

Angular separation (arcsec)

0.75000

Eq. Temperature

409K

(136 °C)

Insolation (S⊕)

7.37

Earth = 1.00

Earth Similarity (ESI)

0.735

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

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-1499

Spectral Class

K-type orange

Effective Temperature

5,097 K — cooler than the Sun (5,778 K)

Estimated Age

4.68 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.780 R☉

Stellar Mass

0.820 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.580 dex

Stellar density

1.780 g/cm³

Metallicity ratio

[Fe/H]

Distance

309.87 parsec

Light-years 1,010.66 ly

V-band magnitude

13.68 mag

Voyager-speed travel 17,822,923 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.198 mas

Total Proper Motion

25.438 mas/yr

PM Right Ascension

6.46 mas/yr

PM Declination

24.60 mas/yr

Galactic Cartesian (pc)

x = 0.181 · y = -0.725 · z = 0.665

Equatorial (J2000)

RA 283.98635° · Dec 41.65051°

Galactic ℓ, b

71.616° · 16.856°

Ecliptic λ, β

294.248° · 63.917°

HTM-20 index

1459667539