Key parameters at a glance
- A radius of 3.77 Earth radii
- A mass of 13.70 Earth masses
- Surface gravity around 0.96 g
- An orbital period of 96.101 days
- Semi-major axis 0.4020 AU
- Equilibrium temperature 409 K (136 °C)
- Distance from Earth 3,785.46 light-years
- Earth Similarity Index 0.498
- Travel time at Voyager 1 speed 66,756,661 years
1 sibling around Kepler-315
Kepler-315 b shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-315 b this | Sub-Neptune | 3.77 | 13.70 | 96.101 | 409 | 2014 |
| Kepler-315 c | Neptune-like | 4.15 | 16.10 | 265.469 | 291 | 2014 |
Kepler-315 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#63of 1978
top 3.1%
This planet
3.77R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-315 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.77 | 11.21 |
| Mass (M⊕) | 1.00 | 13.70 | 317.83 |
| Density (g/cm³) | 5.51 | 1.40 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.96 | 2.53 |
| Insolation (S⊕) | 1.00 | 6.67 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 273694712
Gaia DR2
Gaia DR2 2078635910668511872
Gaia DR3
Gaia DR3 2078635910668511872
System
Kepler-315
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 96.10 Earth days (26.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4020 AU.
Transit Fingerprint
Depth
0.098 %
Duration
8.360 h
Impact parameter b
0.740
Rp / R★
0.034430
Transit midpoint (BJD)
2,455,020.7323
Photometric dip
Transit produces a flux drop of 982 ppm lasting ≈ 8.36 h.
Extended Orbital Architecture
Planet / star radius ratio
0.034430
Semi-major axis / stellar radius
26.890
Impact parameter (b)
0.740
Transit mid-time (BJD)
2,455,020.7323
Angular separation (arcsec)
0.34600
Eq. Temperature
409K
(136 °C)
Insolation (S⊕)
6.67
Earth = 1.00
Earth Similarity (ESI)
0.498
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-315
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,796 K — hotter than the Sun (5,778 K)
Estimated Age
12.30 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.037 R☉
Stellar Mass
0.831 M☉
Metallicity [Fe/H]
-0.27
Extended Stellar Properties
Surface gravity (log g)
4.377 dex
Stellar density
0.040 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.834 mas
Total Proper Motion
7.838 mas/yr
PM Right Ascension
1.17 mas/yr
PM Declination
-7.75 mas/yr
Galactic Cartesian (pc)
x = 0.342 · y = -0.642 · z = 0.687
Equatorial (J2000)
RA 298.02310° · Dec 43.36348°
Galactic ℓ, b
77.772° · 8.270°
Ecliptic λ, β
317.251° · 62.282°
HTM-20 index
1921825570
Similar Worlds
HD 141004 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.77 R⊕ · 38.5 ly
Kepler-1744 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.77 R⊕ · 3,560.4 ly
Kepler-160 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.76 R⊕ · 3,056.1 ly
Kepler-803 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.79 R⊕ · 2,086.7 ly
Kepler-715 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.75 R⊕ · 4,329.5 ly
HD 191939 g
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.74 R⊕ · 174.8 ly