Key parameters at a glance

A radius of 2.45 Earth radii
A mass of 6.57 Earth masses
Surface gravity around 1.09 g
An orbital period of 24.174 days
Semi-major axis 0.1589 AU
Equilibrium temperature 595 K (322 °C)
Distance from Earth 2,820.27 light-years
Earth Similarity Index 0.427
Travel time at Voyager 1 speed 49,735,418 years

Kepler-1176 b Planet Profile

Physical Specs

Radius

2.45 R⊕

Radius (Jupiter)

0.219 R♃

Mass

6.57 M⊕

Mass (Jupiter)

0.021 M♃

Density

2.45 g/cm³

Surface Gravity

1.09 g (Earth)

Classification

Planet Type

Sub-Neptune

ESI Score 0.427

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

#1260of 1978

top 63.7%

This planet

2.45R⊕

Sub-Neptune median

2.71R⊕

Nearest-size peers

TOI-2274 b 2.45 R⊕ Kepler-243 b 2.45 R⊕ Kepler-570 b 2.45 R⊕

Metric	Earth	Kepler-1176 b	Jupiter
Radius (R⊕)	1.00	2.45	11.21
Mass (M⊕)	1.00	6.57	317.83
Density (g/cm³)	5.51	2.45	1.33
Surface Gravity (g)	1.00	1.09	2.53
Insolation (S⊕)	1.00	26.09	0.037

Star Catalogue Identifiers

TIC

TIC 273582656

Gaia DR2

Gaia DR2 2079323758268003968

Gaia DR3

Gaia DR3 2079323758268003968

System

Kepler-1176

Percentile among Sub-Neptune cohort

Radius 2.450 R⊕ · percentile 36 / cohort 1978

Mass 6.570 M⊕ · percentile 34 / cohort 1978

Orbital period 24.17 d · percentile 68 / cohort 1946

Distance 864.70 pc · percentile 70 / cohort 1975

ESI 0.427 · percentile 58 / cohort 1978

Orbit & Habitability

Orbital Dynamics

Period

24.174 days

Semi-major axis

0.1589 AU

Eccentricity

0.000

Inclination

89.76 °

Year Length

A year here lasts approximately 24.17 Earth days (6.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1589 AU.

Transit Fingerprint

Depth

0.053 %

Duration

3.057 h

Impact parameter b

0.251

Rp / R★

0.021862

Transit midpoint (BJD)

2,454,968.6244

Photometric dip

Transit produces a flux drop of 533 ppm lasting ≈ 3.06 h.

Extended Orbital Architecture

Planet / star radius ratio

0.021862

Semi-major axis / stellar radius

60.200

Impact parameter (b)

0.251

Transit mid-time (BJD)

2,454,968.6244

Angular separation (arcsec)

0.18400

Eq. Temperature

595K

(322 °C)

Insolation (S⊕)

26.09

Earth = 1.00

Earth Similarity (ESI)

0.427

0 = alien, 1 = Earth-identical

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

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-1176

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,844 K — hotter than the Sun (5,778 K)

Estimated Age

3.80 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.020 R☉

Stellar Mass

1.010 M☉

Metallicity [Fe/H]

-0.01

Extended Stellar Properties

Surface gravity (log g)

4.420 dex

Stellar density

6.926 g/cm³

Metallicity ratio

[Fe/H]

Distance

864.70 parsec

Light-years 2,820.27 ly

V-band magnitude

15.27 mag

Voyager-speed travel 49,735,418 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

1.129 mas

Total Proper Motion

10.461 mas/yr

PM Right Ascension

-2.49 mas/yr

PM Declination

10.16 mas/yr

Galactic Cartesian (pc)

x = 0.330 · y = -0.622 · z = 0.710

Equatorial (J2000)

RA 297.91972° · Dec 45.27420°

Galactic ℓ, b

79.416° · 9.279°

Ecliptic λ, β

318.853° · 64.052°

HTM-20 index

1116511505