Key parameters at a glance
- A radius of 3.37 Earth radii
- A mass of 11.30 Earth masses
- Surface gravity around 0.99 g
- An orbital period of 27.083 days
- Semi-major axis 0.1810 AU
- Equilibrium temperature 703 K (430 °C)
- Distance from Earth 2,640.13 light-years
- Earth Similarity Index 0.320
- Travel time at Voyager 1 speed 46,558,605 years
1 sibling around Kepler-143
Kepler-143 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-143 b | Sub-Neptune | 2.41 | 6.39 | 16.008 | 838 | 2014 |
| Kepler-143 c this | Sub-Neptune | 3.37 | 11.30 | 27.083 | 703 | 2014 |
Kepler-143 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#237of 1978
top 11.9%
This planet
3.37R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-143 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.37 | 11.21 |
| Mass (M⊕) | 1.00 | 11.30 | 317.83 |
| Density (g/cm³) | 5.51 | 1.62 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.99 | 2.53 |
| Insolation (S⊕) | 1.00 | 58.70 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 28364164
Gaia DR2
Gaia DR2 2087172999977491328
Gaia DR3
Gaia DR3 2087172999977491328
System
Kepler-143
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 27.08 Earth days (7.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1810 AU.
Transit Fingerprint
Depth
0.042 %
Duration
5.103 h
Impact parameter b
0.890
Rp / R★
0.019320
Transit midpoint (BJD)
2,455,024.8061
Photometric dip
Transit produces a flux drop of 423 ppm lasting ≈ 5.10 h.
Extended Orbital Architecture
Planet / star radius ratio
0.019320
Semi-major axis / stellar radius
18.900
Impact parameter (b)
0.890
Transit mid-time (BJD)
2,455,024.8061
Angular separation (arcsec)
0.22400
Eq. Temperature
703K
(430 °C)
Insolation (S⊕)
58.70
Earth = 1.00
Earth Similarity (ESI)
0.320
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
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-143
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,848 K — hotter than the Sun (5,778 K)
Estimated Age
9.33 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.359 R☉
Stellar Mass
0.982 M☉
Metallicity [Fe/H]
-0.01
Extended Stellar Properties
Surface gravity (log g)
4.202 dex
Stellar density
0.450 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.207 mas
Total Proper Motion
11.843 mas/yr
PM Right Ascension
-7.31 mas/yr
PM Declination
-9.32 mas/yr
Galactic Cartesian (pc)
x = 0.306 · y = -0.574 · z = 0.759
Equatorial (J2000)
RA 298.06765° · Dec 49.41254°
Galactic ℓ, b
83.138° · 11.209°
Ecliptic λ, β
323.724° · 67.685°
HTM-20 index
1581500704
Similar Worlds
HD 134606 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.37 R⊕ · 87.4 ly
Kepler-1676 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.38 R⊕ · —
K2-340 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.36 R⊕ · 2,407.5 ly
Kepler-310 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.38 R⊕ · 1,964.3 ly
Kepler-277 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.36 R⊕ · 3,185.4 ly
Kepler-1057 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.36 R⊕ · 3,919.8 ly