Key parameters at a glance
- A radius of 4.21 Earth radii
- A mass of 16.50 Earth masses
- Surface gravity around 0.93 g
- An orbital period of 88.407 days
- Semi-major axis 0.3920 AU
- Equilibrium temperature 410 K (137 °C)
- Distance from Earth 844.40 light-years
- Earth Similarity Index 0.474
- Travel time at Voyager 1 speed 14,890,906 years
1 sibling around Kepler-953
Kepler-953 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-953 c | Rocky Terrestrial | 1.19 | 1.81 | 9.110 | 873 | 2016 |
| Kepler-953 b this | Neptune-like | 4.21 | 16.50 | 88.407 | 410 | 2016 |
Kepler-953 b Planet Profile
Physical Specs
Classification
Planet Type
Neptune-like
Discovery
Size rank in cohort
Rank by radius
#514of 574
top 89.4%
This planet
4.21R⊕
Neptune-like median
6.39R⊕
Nearest-size peers
| Metric | Earth | Kepler-953 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 4.21 | 11.21 |
| Mass (M⊕) | 1.00 | 16.50 | 317.83 |
| Density (g/cm³) | 5.51 | 1.22 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.93 | 2.53 |
| Insolation (S⊕) | 1.00 | 5.84 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158933249
Gaia DR2
Gaia DR2 2127132821641254272
Gaia DR3
Gaia DR3 2127132821641254272
System
Kepler-953
Percentile among Neptune-like cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 88.41 Earth days (24.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.3920 AU.
Transit Fingerprint
Depth
0.172 %
Duration
12.307 h
Impact parameter b
0.567
Rp / R★
0.039201
Transit midpoint (BJD)
2,455,009.2756
Photometric dip
Transit produces a flux drop of 1,724 ppm lasting ≈ 12.31 h.
Extended Orbital Architecture
Planet / star radius ratio
0.039201
Semi-major axis / stellar radius
41.400
Impact parameter (b)
0.567
Transit mid-time (BJD)
2,455,009.2756
Angular separation (arcsec)
1.51000
Eq. Temperature
410K
(137 °C)
Insolation (S⊕)
5.84
Earth = 1.00
Earth Similarity (ESI)
0.474
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
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-953
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,416 K — cooler than the Sun (5,778 K)
Estimated Age
8.71 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.990 R☉
Stellar Mass
0.950 M☉
Metallicity [Fe/H]
0.26
Extended Stellar Properties
Surface gravity (log g)
4.420 dex
Stellar density
0.264 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.890 mas
Total Proper Motion
23.660 mas/yr
PM Right Ascension
-9.42 mas/yr
PM Declination
21.70 mas/yr
Galactic Cartesian (pc)
x = 0.231 · y = -0.673 · z = 0.702
Equatorial (J2000)
RA 288.97163° · Dec 44.62465°
Galactic ℓ, b
75.924° · 14.647°
Ecliptic λ, β
304.382° · 65.814°
HTM-20 index
1204974875
Similar Worlds
Kepler-149 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.21 R⊕ · 1,862.5 ly
Kepler-511 c
Neptune-like · G-type yellow (Sun-like)
Radius 4.21 R⊕ · 2,126.5 ly
Kepler-549 d
Neptune-like · G-type yellow (Sun-like)
Radius 4.20 R⊕ · 2,071.6 ly
Kepler-610 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.19 R⊕ · 2,758.7 ly
Kepler-11 e
Neptune-like · G-type yellow (Sun-like)
Radius 4.19 R⊕ · 2,108.1 ly
K2-198 b
Neptune-like · G-type yellow (Sun-like)
Radius 4.19 R⊕ · 360.6 ly