Key parameters at a glance
- A radius of 4.15 Earth radii
- A mass of 16.10 Earth masses
- Surface gravity around 0.93 g
- An orbital period of 265.469 days
- Semi-major axis 0.7910 AU
- Equilibrium temperature 291 K (18 °C)
- Distance from Earth 3,785.46 light-years
- Earth Similarity Index 0.619
- Travel time at Voyager 1 speed 66,756,661 years
1 sibling around Kepler-315
Kepler-315 c 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 | Sub-Neptune | 3.77 | 13.70 | 96.101 | 409 | 2014 |
| Kepler-315 c this | Neptune-like | 4.15 | 16.10 | 265.469 | 291 | 2014 |
Kepler-315 c Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#531of 574
top 92.3%
This planet
4.15R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-315 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 4.15 | 11.21 |
| Mass (M⊕) | 1.00 | 16.10 | 317.83 |
| Density (g/cm³) | 5.51 | 1.24 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.93 | 2.53 |
| Insolation (S⊕) | 1.00 | 1.72 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 273694712
Gaia DR2
Gaia DR2 2078635910668511872
Gaia DR3
Gaia DR3 2078635910668511872
System
Kepler-315
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 265.47 Earth days (72.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.7910 AU.
Transit Fingerprint
Depth
0.115 %
Duration
10.184 h
Impact parameter b
0.940
Rp / R★
0.038648
Transit midpoint (BJD)
2,454,984.0684
Photometric dip
Transit produces a flux drop of 1,148 ppm lasting ≈ 10.18 h.
Extended Orbital Architecture
Planet / star radius ratio
0.038648
Semi-major axis / stellar radius
79.800
Impact parameter (b)
0.940
Transit mid-time (BJD)
2,454,984.0684
Angular separation (arcsec)
0.68200
Eq. Temperature
291K
(18 °C)
Insolation (S⊕)
1.72
Earth = 1.00
Earth Similarity (ESI)
0.619
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
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
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Kepler-1799 b
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Radius 4.13 R⊕ · 7,353.8 ly