Key parameters at a glance
- A radius of 2.41 Earth radii
- A mass of 6.39 Earth masses
- Surface gravity around 1.10 g
- An orbital period of 16.008 days
- Semi-major axis 0.1270 AU
- Equilibrium temperature 838 K (565 °C)
- Distance from Earth 2,640.13 light-years
- Earth Similarity Index 0.306
- Travel time at Voyager 1 speed 46,558,605 years
1 sibling around Kepler-143
Kepler-143 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-143 b this | Sub-Neptune | 2.41 | 6.39 | 16.008 | 838 | 2014 |
| Kepler-143 c | Sub-Neptune | 3.37 | 11.30 | 27.083 | 703 | 2014 |
Kepler-143 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1312of 1978
top 66.3%
This planet
2.41R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-143 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.41 | 11.21 |
| Mass (M⊕) | 1.00 | 6.39 | 317.83 |
| Density (g/cm³) | 5.51 | 2.51 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.10 | 2.53 |
| Insolation (S⊕) | 1.00 | 118.33 | 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 16.01 Earth days (4.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1270 AU.
Transit Fingerprint
Depth
0.029 %
Duration
1.133 h
Impact parameter b
0.790
Rp / R★
0.016092
Transit midpoint (BJD)
2,454,975.6368
Photometric dip
Transit produces a flux drop of 287 ppm lasting ≈ 1.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.016092
Semi-major axis / stellar radius
106.800
Impact parameter (b)
0.790
Transit mid-time (BJD)
2,454,975.6368
Angular separation (arcsec)
0.15700
Eq. Temperature
838K
(565 °C)
Insolation (S⊕)
118.33
Earth = 1.00
Earth Similarity (ESI)
0.306
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
K2-224 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.41 R⊕ · 897.8 ly
Kepler-1182 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.41 R⊕ · 5,040.4 ly
K2-37 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.41 R⊕ · 586.9 ly
K2-84 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.41 R⊕ · 929.1 ly
Kepler-343 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.41 R⊕ · 3,024.1 ly
Kepler-131 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.41 R⊕ · 745.8 ly