Key parameters at a glance

A radius of 2.67 Earth radii
A mass of 7.61 Earth masses
Surface gravity around 1.07 g
An orbital period of 6.774 days
Semi-major axis 0.0741 AU
Equilibrium temperature 1,058 K (785 °C)
Distance from Earth 4,171.40 light-years
Earth Similarity Index 0.229
Travel time at Voyager 1 speed 73,562,719 years

Kepler-1044 b Planet Profile

Physical Specs

Radius

2.67 R⊕

Radius (Jupiter)

0.238 R♃

Mass

7.61 M⊕

Mass (Jupiter)

0.024 M♃

Density

2.20 g/cm³

Surface Gravity

1.07 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.229

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

#904of 1978

top 45.7%

This planet

2.67R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

Kepler-357 c 2.67 R⊕ Kepler-96 b 2.67 R⊕ K2-26 b 2.67 R⊕

Metric	Earth	Kepler-1044 b	Jupiter
Radius (R⊕)	1.00	2.67	11.21
Mass (M⊕)	1.00	7.61	317.83
Density (g/cm³)	5.51	2.20	1.33
Surface Gravity (g)	1.00	1.07	2.53
Insolation (S⊕)	1.00	218.50	0.037

Star Catalogue Identifiers

TIC

TIC 275488493

Gaia DR2

Gaia DR2 2128374483807368576

Gaia DR3

Gaia DR3 2128374483807368576

System

Kepler-1044

Percentile among Sub-Neptune cohort

Radius 2.670 R⊕ · percentile 53 / cohort 1978

Mass 7.610 M⊕ · percentile 49 / cohort 1978

Orbital period 6.77 d · percentile 21 / cohort 1946

Distance 1,278.96 pc · percentile 88 / cohort 1975

ESI 0.229 · percentile 12 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

6.774 days

Semi-major axis

0.0741 AU

Eccentricity

0.000

Inclination

89.92 °

Year Length

A year here lasts approximately 6.77 Earth days (1.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0741 AU.

Transit Fingerprint

Depth

0.052 %

Duration

2.620 h

Impact parameter b

0.946

Rp / R★

0.021960

Transit midpoint (BJD)

2,454,968.9551

Photometric dip

Transit produces a flux drop of 520 ppm lasting ≈ 2.62 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021960

Semi-major axis / stellar radius

6.480

Impact parameter (b)

0.946

Transit mid-time (BJD)

2,454,968.9551

Angular separation (arcsec)

0.05790

Eq. Temperature

1,058K

(785 °C)

Insolation (S⊕)

218.50

Earth = 1.00

Earth Similarity (ESI)

0.229

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-1044

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,985 K — hotter than the Sun (5,778 K)

Estimated Age

3.55 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.110 R☉

Stellar Mass

1.080 M☉

Metallicity [Fe/H]

0.04

Extended Stellar Properties

Surface gravity (log g)

4.380 dex

Stellar density

3.376 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,278.96 parsec

Light-years 4,171.40 ly

V-band magnitude

15.48 mag

Voyager-speed travel 73,562,719 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.753 mas

Total Proper Motion

9.816 mas/yr

PM Right Ascension

-4.45 mas/yr

PM Declination

-8.75 mas/yr

Galactic Cartesian (pc)

x = 0.270 · y = -0.631 · z = 0.727

Equatorial (J2000)

RA 293.14440° · Dec 46.66622°

Galactic ℓ, b

79.096° · 12.863°

Ecliptic λ, β

312.960° · 66.686°

HTM-20 index

-1468450920