Key parameters at a glance
- A radius of 2.57 Earth radii
- A mass of 7.13 Earth masses
- Surface gravity around 1.08 g
- An orbital period of 33.386 days
- Semi-major axis 0.2012 AU
- Equilibrium temperature 580 K (307 °C)
- Distance from Earth 2,617.96 light-years
- Earth Similarity Index 0.429
- Travel time at Voyager 1 speed 46,167,773 years
1 sibling around Kepler-879
Kepler-879 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-879 c | Rocky Terrestrial | 0.40 | 0.04 | 0.647 | — | 2024 |
| Kepler-879 b this | Sub-Neptune | 2.57 | 7.13 | 33.386 | 580 | 2016 |
Kepler-879 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1074of 1978
top 54.2%
This planet
2.57R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-879 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.57 | 11.21 |
| Mass (M⊕) | 1.00 | 7.13 | 317.83 |
| Density (g/cm³) | 5.51 | 2.31 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.08 | 2.53 |
| Insolation (S⊕) | 1.00 | 29.13 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27639443
Gaia DR2
Gaia DR2 2135398473324811392
Gaia DR3
Gaia DR3 2135398473324811392
System
Kepler-879
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 33.39 Earth days (9.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2012 AU.
Transit Fingerprint
Depth
0.055 %
Duration
5.051 h
Impact parameter b
0.562
Rp / R★
0.022755
Transit midpoint (BJD)
2,454,981.9280
Photometric dip
Transit produces a flux drop of 553 ppm lasting ≈ 5.05 h.
Extended Orbital Architecture
Planet / star radius ratio
0.022755
Semi-major axis / stellar radius
39.800
Impact parameter (b)
0.562
Transit mid-time (BJD)
2,454,981.9280
Angular separation (arcsec)
0.25100
Eq. Temperature
580K
(307 °C)
Insolation (S⊕)
29.13
Earth = 1.00
Earth Similarity (ESI)
0.429
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-879
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,792 K — hotter than the Sun (5,778 K)
Estimated Age
4.27 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.020 R☉
Stellar Mass
1.020 M☉
Metallicity [Fe/H]
0.05
Extended Stellar Properties
Surface gravity (log g)
4.420 dex
Stellar density
1.374 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.217 mas
Total Proper Motion
9.174 mas/yr
PM Right Ascension
-3.64 mas/yr
PM Declination
-8.42 mas/yr
Galactic Cartesian (pc)
x = 0.274 · y = -0.568 · z = 0.776
Equatorial (J2000)
RA 295.80655° · Dec 50.90975°
Galactic ℓ, b
83.796° · 13.190°
Ecliptic λ, β
322.306° · 69.703°
HTM-20 index
-204279710
Similar Worlds
Kepler-1549 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.57 R⊕ · 2,619.2 ly
Kepler-549 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.57 R⊕ · 2,071.6 ly
Kepler-1991 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.57 R⊕ · 2,791.3 ly
Kepler-313 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.57 R⊕ · 3,520.5 ly
K2-248 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.57 R⊕ · 1,325.0 ly
Kepler-203 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.57 R⊕ · 2,293.9 ly