Key parameters at a glance

A radius of 1.60 Earth radii
A mass of 235.98 Earth masses
Surface gravity around 92.18 g
An orbital period of 2.577 days
Semi-major axis 0.0310 AU
Equilibrium temperature 717 K (444 °C)
Distance from Earth 1,015.07 light-years
Earth Similarity Index 0.255
Travel time at Voyager 1 speed 17,900,745 years
Almost certainly tidally locked to its host star given the close orbit

3 siblings around Kepler-49

Kepler-49 d shares its host star with 3 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
Kepler-49 d this	Super-Earth	1.60	235.98	2.577	717	2014
Kepler-49 b	Sub-Neptune	2.58	9.77	7.200	509	2012
Kepler-49 c	Sub-Neptune	2.44	8.38	10.910	443	2012
Kepler-49 e	Super-Earth	1.56	1.04	18.596	371	2014

Kepler-49 d Planet Profile

Physical Specs

Radius

1.60 R⊕

Radius (Jupiter)

0.143 R♃

Mass

235.98 M⊕

Mass (Jupiter)

0.742 M♃

Density

20.00 g/cm³

Surface Gravity

92.18 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.255

HZ Position Inner

Controversial No

Discovery

Year 2014

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#570of 1176

top 48.4%

This planet

1.60R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

EPIC 220554210 c 1.60 R⊕ Kepler-394 b 1.60 R⊕ Kepler-114 c 1.60 R⊕

Metric	Earth	Kepler-49 d	Jupiter
Radius (R⊕)	1.00	1.60	11.21
Mass (M⊕)	1.00	235.98	317.83
Density (g/cm³)	5.51	20.00	1.33
Surface Gravity (g)	1.00	92.18	2.53
Insolation (S⊕)	1.00	64.39	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	235.982 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 137555411

Gaia DR2

Gaia DR2 2053523271244105216

Gaia DR3

Gaia DR3 2053523271244105216

System

Kepler-49

Percentile among Super-Earth cohort

Radius 1.600 R⊕ · percentile 50 / cohort 1176

Mass 235.982 M⊕ · percentile 99 / cohort 1176

Orbital period 2.58 d · percentile 17 / cohort 1164

Distance 311.22 pc · percentile 33 / cohort 1171

ESI 0.255 · percentile 24 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

2.577 days

Semi-major axis

0.0310 AU

Eccentricity

0.000

Inclination

89.14 °

Year Length

A year here lasts approximately 2.58 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0310 AU.

Transit Fingerprint

Depth

0.085 %

Duration

1.597 h

Impact parameter b

0.060

Rp / R★

0.026700

Transit midpoint (BJD)

2,455,005.1293

Photometric dip

Transit produces a flux drop of 853 ppm lasting ≈ 1.60 h.

Extended Orbital Architecture

Planet / star radius ratio

0.026700

Semi-major axis / stellar radius

12.787

Impact parameter (b)

0.060

Transit mid-time (BJD)

2,455,005.1293

Angular separation (arcsec)

0.09960

Eq. Temperature

717K

(444 °C)

Insolation (S⊕)

64.39

Earth = 1.00

Earth Similarity (ESI)

0.255

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.

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

Rowe et al. 2014

Instrument

Kepler CCD Array

Publication

2014-03

Observation locale

Space

Discovery cohort

Planets confirmed in 2014 at Kepler (12 shown).

Kepler-186 e · Super-Earth Kepler-395 c · Super-Earth Kepler-220 e · Super-Earth Kepler-249 d · Super-Earth Kepler-296 f · Super-Earth Kepler-367 c · Rocky Terrestrial Kepler-296 e · Super-Earth Kepler-155 c · Sub-Neptune Kepler-138 d · Super-Earth Kepler-333 c · Rocky Terrestrial Kepler-331 d · Super-Earth Kepler-267 d · Sub-Neptune

Host System: Kepler-49

Spectral Class

M-type red dwarf

Effective Temperature

4,252 K — cooler than the Sun (5,778 K)

Estimated Age

2.88 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.559 R☉

Stellar Mass

0.549 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.727 dex

Stellar density

0.384 g/cm³

Metallicity ratio

[Fe/H]

Distance

311.22 parsec

Light-years 1,015.07 ly

V-band magnitude

15.66 mag

Voyager-speed travel 17,900,745 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.185 mas

Total Proper Motion

8.734 mas/yr

PM Right Ascension

-7.61 mas/yr

PM Declination

4.28 mas/yr

Galactic Cartesian (pc)

x = 0.288 · y = -0.703 · z = 0.651

Equatorial (J2000)

RA 292.29452° · Dec 40.59181°

Galactic ℓ, b

73.257° · 10.714°

Ecliptic λ, β

306.745° · 61.217°

HTM-20 index

1873653475