Key parameters at a glance
- A radius of 1.33 Earth radii
- A mass of 2.33 Earth masses
- Surface gravity around 1.32 g
- An orbital period of 104.352 days
- Semi-major axis 0.4297 AU
- Equilibrium temperature 355 K (82 °C)
- Distance from Earth 1,497.95 light-years
- Earth Similarity Index 0.816
- Travel time at Voyager 1 speed 26,416,284 years
Kepler-1185 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1022of 1176
top 86.8%
This planet
1.33R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1185 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.33 | 11.21 |
| Mass (M⊕) | 1.00 | 2.33 | 317.83 |
| Density (g/cm³) | 5.51 | 5.44 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.32 | 2.53 |
| Insolation (S⊕) | 1.00 | 9.31 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 121121775
Gaia DR2
Gaia DR2 2100408508633587712
Gaia DR3
Gaia DR3 2100408508633587712
System
Kepler-1185
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 104.35 Earth days (28.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4297 AU.
Transit Fingerprint
Depth
0.024 %
Duration
3.586 h
Impact parameter b
0.048
Rp / R★
0.013952
Transit midpoint (BJD)
2,455,023.1023
Photometric dip
Transit produces a flux drop of 244 ppm lasting ≈ 3.59 h.
Extended Orbital Architecture
Planet / star radius ratio
0.013952
Semi-major axis / stellar radius
225.200
Impact parameter (b)
0.048
Transit mid-time (BJD)
2,455,023.1023
Angular separation (arcsec)
0.93600
Eq. Temperature
355K
(82 °C)
Insolation (S⊕)
9.31
Earth = 1.00
Earth Similarity (ESI)
0.816
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
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. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-1185
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,622 K — cooler than the Sun (5,778 K)
Estimated Age
1.55 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.870 R☉
Stellar Mass
0.960 M☉
Metallicity [Fe/H]
-0.04
Extended Stellar Properties
Surface gravity (log g)
4.540 dex
Stellar density
0.623 g/cm³
Systemic radial velocity
2.56 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
2.149 mas
Total Proper Motion
14.696 mas/yr
PM Right Ascension
3.05 mas/yr
PM Declination
-14.38 mas/yr
Galactic Cartesian (pc)
x = 0.229 · y = -0.739 · z = 0.634
Equatorial (J2000)
RA 287.24118° · Dec 39.33270°
Galactic ℓ, b
70.398° · 13.675°
Ecliptic λ, β
298.303° · 61.089°
HTM-20 index
-551177988
Similar Worlds
Kepler-1028 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.33 R⊕ · 1,982.8 ly
HD 134606 e
Super-Earth · G-type yellow (Sun-like)
Radius 1.33 R⊕ · 87.4 ly
Kepler-1498 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.33 R⊕ · 2,413.6 ly
Kepler-1253 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.33 R⊕ · 1,678.2 ly
Kepler-1587 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.33 R⊕ · 3,347.9 ly
Kepler-286 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.33 R⊕ · 4,001.4 ly