Key parameters at a glance
- A radius of 1.66 Earth radii
- A mass of 3.39 Earth masses
- Surface gravity around 1.23 g
- An orbital period of 3.596 days
- Semi-major axis 0.0473 AU
- Equilibrium temperature 1,327 K (1054 °C)
- Distance from Earth 4,341.95 light-years
- Earth Similarity Index 0.211
- Travel time at Voyager 1 speed 76,570,315 years
1 sibling around Kepler-1859
Kepler-1859 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-1859 b | Super-Earth | 1.58 | 3.13 | 2.730 | 1,455 | 2021 |
| Kepler-1859 c this | Super-Earth | 1.66 | 3.39 | 3.596 | 1,327 | 2023 |
Kepler-1859 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#469of 1176
top 39.8%
This planet
1.66R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1859 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.66 | 11.21 |
| Mass (M⊕) | 1.00 | 3.39 | 317.83 |
| Density (g/cm³) | 5.51 | 4.07 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.23 | 2.53 |
| Insolation (S⊕) | 1.00 | 732.82 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 270790094
Gaia DR2
Gaia DR2 2128198974266072192
Gaia DR3
Gaia DR3 2128198974266072192
System
Kepler-1859
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.60 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0473 AU.
Transit Fingerprint
Depth
0.015 %
Duration
2.661 h
Impact parameter b
0.781
Rp / R★
0.012319
Transit midpoint (BJD)
2,454,965.7721
Photometric dip
Transit produces a flux drop of 150 ppm lasting ≈ 2.66 h.
Extended Orbital Architecture
Planet / star radius ratio
0.012319
Semi-major axis / stellar radius
6.710
Impact parameter (b)
0.781
Transit mid-time (BJD)
2,454,965.7721
Angular separation (arcsec)
0.03550
Eq. Temperature
1,327K
(1054 °C)
Insolation (S⊕)
732.82
Earth = 1.00
Earth Similarity (ESI)
0.211
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Discovery Paper
Primary reference
Valizadegan et al. 2023Instrument
Kepler CCD Array
Publication
2023-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Kepler (12 shown).
Host System: Kepler-1859
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,887 K — hotter than the Sun (5,778 K)
Estimated Age
2.50 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.235 R☉
Stellar Mass
1.090 M☉
Metallicity [Fe/H]
0.16
Extended Stellar Properties
Surface gravity (log g)
4.292 dex
Stellar density
0.441 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.723 mas
Total Proper Motion
12.193 mas/yr
PM Right Ascension
-4.38 mas/yr
PM Declination
-11.38 mas/yr
Galactic Cartesian (pc)
x = 0.279 · y = -0.626 · z = 0.728
Equatorial (J2000)
RA 293.98868° · Dec 46.71800°
Galactic ℓ, b
79.406° · 12.367°
Ecliptic λ, β
314.348° · 66.502°
HTM-20 index
-1311771796
Similar Worlds
Kepler-1464 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.66 R⊕ · 3,756.4 ly
Kepler-1291 b
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Radius 1.66 R⊕ · 2,926.8 ly
Kepler-1342 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.66 R⊕ · 2,905.1 ly
Kepler-1497 b
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Radius 1.66 R⊕ · 3,659.5 ly
K2-294 b
Super-Earth · G-type yellow (Sun-like)
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Kepler-1838 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.66 R⊕ · 1,471.8 ly