Key parameters at a glance
- A radius of 1.70 Earth radii
- A mass of 3.53 Earth masses
- Surface gravity around 1.22 g
- An orbital period of 23.554 days
- Semi-major axis 0.2134 AU
- Equilibrium temperature 1,381 K (1108 °C)
- Distance from Earth 3,206.91 light-years
- Earth Similarity Index 0.200
- Travel time at Voyager 1 speed 56,553,900 years
Kepler-1115 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#401of 1176
top 34.0%
This planet
1.70R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1115 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.70 | 11.21 |
| Mass (M⊕) | 1.00 | 3.53 | 317.83 |
| Density (g/cm³) | 5.51 | 3.95 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.22 | 2.53 |
| Insolation (S⊕) | 1.00 | 516.10 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 138960099
Gaia DR2
Gaia DR2 2076483616656410496
Gaia DR3
Gaia DR3 2076483616656410496
System
Kepler-1115
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 23.55 Earth days (6.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2134 AU.
Transit Fingerprint
Depth
0.009 %
Duration
7.159 h
Impact parameter b
0.827
Rp / R★
0.008692
Transit midpoint (BJD)
2,454,977.2125
Photometric dip
Transit produces a flux drop of 86 ppm lasting ≈ 7.16 h.
Extended Orbital Architecture
Planet / star radius ratio
0.008692
Semi-major axis / stellar radius
25.360
Impact parameter (b)
0.827
Transit mid-time (BJD)
2,454,977.2125
Sky-projected obliquity (λ)
1.00°
True obliquity (ψ)
-4.00°
Angular separation (arcsec)
0.21700
Eq. Temperature
1,381K
(1108 °C)
Insolation (S⊕)
516.10
Earth = 1.00
Earth Similarity (ESI)
0.200
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. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-1115
Spectral Class
A-type white
Effective Temperature
8,480 K — hotter than the Sun (5,778 K)
Estimated Age
1.12 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.730 R☉
Stellar Mass
1.600 M☉
Metallicity [Fe/H]
-0.51
Extended Stellar Properties
Surface gravity (log g)
4.170 dex
Stellar density
0.531 g/cm³
Rotational v·sin i
200.00 km/s
Rotation period
0.58 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
0.989 mas
Total Proper Motion
0.431 mas/yr
PM Right Ascension
-0.37 mas/yr
PM Declination
0.22 mas/yr
Galactic Cartesian (pc)
x = 0.323 · y = -0.693 · z = 0.645
Equatorial (J2000)
RA 294.99177° · Dec 40.14440°
Galactic ℓ, b
73.818° · 8.685°
Ecliptic λ, β
310.415° · 60.125°
HTM-20 index
-1540408508