Key parameters at a glance
- A radius of 3.31 Earth radii
- A mass of 11.00 Earth masses
- Surface gravity around 1.00 g
- An orbital period of 5.868 days
- Semi-major axis 0.0680 AU
- Equilibrium temperature 1,254 K (981 °C)
- Distance from Earth 2,855.56 light-years
- Earth Similarity Index 0.174
- Travel time at Voyager 1 speed 50,357,758 years
2 siblings around Kepler-207
Kepler-207 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-207 b | Super-Earth | 1.57 | 3.09 | 1.612 | 1,930 | 2014 |
| Kepler-207 c | Super-Earth | 1.50 | 2.86 | 3.072 | 1,556 | 2014 |
| Kepler-207 d this | Sub-Neptune | 3.31 | 11.00 | 5.868 | 1,254 | 2014 |
Kepler-207 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#272of 1978
top 13.7%
This planet
3.31R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-207 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.31 | 11.21 |
| Mass (M⊕) | 1.00 | 11.00 | 317.83 |
| Density (g/cm³) | 5.51 | 1.67 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.00 | 2.53 |
| Insolation (S⊕) | 1.00 | 732.60 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 159217436
Gaia DR2
Gaia DR2 2101898759208960640
Gaia DR3
Gaia DR3 2101898759208960640
System
Kepler-207
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.87 Earth days (1.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0680 AU.
Transit Fingerprint
Depth
0.044 %
Duration
3.970 h
Impact parameter b
0.270
Rp / R★
0.021200
Transit midpoint (BJD)
2,455,003.3224
Photometric dip
Transit produces a flux drop of 436 ppm lasting ≈ 3.97 h.
Extended Orbital Architecture
Planet / star radius ratio
0.021200
Semi-major axis / stellar radius
11.521
Impact parameter (b)
0.270
Transit mid-time (BJD)
2,455,003.3224
Angular separation (arcsec)
0.07770
Eq. Temperature
1,254K
(981 °C)
Insolation (S⊕)
732.60
Earth = 1.00
Earth Similarity (ESI)
0.174
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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-207
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,920 K — hotter than the Sun (5,778 K)
Estimated Age
3.63 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.588 R☉
Stellar Mass
1.313 M☉
Metallicity [Fe/H]
0.29
Extended Stellar Properties
Surface gravity (log g)
4.129 dex
Stellar density
0.280 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.113 mas
Total Proper Motion
2.762 mas/yr
PM Right Ascension
-0.10 mas/yr
PM Declination
2.76 mas/yr
Galactic Cartesian (pc)
x = 0.254 · y = -0.696 · z = 0.671
Equatorial (J2000)
RA 290.03052° · Dec 42.16606°
Galactic ℓ, b
73.947° · 12.929°
Ecliptic λ, β
304.317° · 63.238°
HTM-20 index
445333241
Similar Worlds
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Sub-Neptune · G-type yellow (Sun-like)
Radius 3.30 R⊕ · 2,763.6 ly
Kepler-464 b
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Kepler-739 b
Sub-Neptune · G-type yellow (Sun-like)
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Kepler-1467 b
Sub-Neptune · G-type yellow (Sun-like)
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Kepler-610 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.30 R⊕ · 2,758.7 ly
TOI-1794 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.30 R⊕ · 508.1 ly