Key parameters at a glance
- A radius of 2.81 Earth radii
- A mass of 19.10 Earth masses
- Surface gravity around 2.42 g
- An orbital period of 47.904 days
- Semi-major axis 0.2720 AU
- Equilibrium temperature 598 K (325 °C)
- Distance from Earth 2,567.08 light-years
- Earth Similarity Index 0.442
- Travel time at Voyager 1 speed 45,270,383 years
2 siblings around Kepler-219
Kepler-219 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-219 b | Sub-Neptune | 2.95 | 9.01 | 4.586 | 1,307 | 2014 |
| Kepler-219 c | Sub-Neptune | 3.58 | 12.50 | 22.715 | 766 | 2014 |
| Kepler-219 d this | Sub-Neptune | 2.81 | 19.10 | 47.904 | 598 | 2014 |
Kepler-219 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#732of 1978
top 37.0%
This planet
2.81R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-219 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.81 | 11.21 |
| Mass (M⊕) | 1.00 | 19.10 | 317.83 |
| Density (g/cm³) | 5.51 | 4.73 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.42 | 2.53 |
| Insolation (S⊕) | 1.00 | 20.01 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 19.100 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 158838045
Gaia DR2
Gaia DR2 2127771917075703424
Gaia DR3
Gaia DR3 2127771917075703424
System
Kepler-219
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 47.90 Earth days (13.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2720 AU.
Transit Fingerprint
Depth
0.038 %
Duration
5.719 h
Impact parameter b
0.060
Rp / R★
0.017606
Transit midpoint (BJD)
2,454,974.9826
Photometric dip
Transit produces a flux drop of 377 ppm lasting ≈ 5.72 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017606
Semi-major axis / stellar radius
63.600
Impact parameter (b)
0.060
Transit mid-time (BJD)
2,454,974.9826
Angular separation (arcsec)
0.34600
Eq. Temperature
598K
(325 °C)
Insolation (S⊕)
20.01
Earth = 1.00
Earth Similarity (ESI)
0.442
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-219
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,786 K — hotter than the Sun (5,778 K)
Estimated Age
4.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.491 R☉
Stellar Mass
1.164 M☉
Metallicity [Fe/H]
0.36
Extended Stellar Properties
Surface gravity (log g)
4.157 dex
Stellar density
0.750 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.242 mas
Total Proper Motion
3.151 mas/yr
PM Right Ascension
-1.34 mas/yr
PM Declination
2.85 mas/yr
Galactic Cartesian (pc)
x = 0.220 · y = -0.649 · z = 0.729
Equatorial (J2000)
RA 288.73895° · Dec 46.76259°
Galactic ℓ, b
77.888° · 15.649°
Ecliptic λ, β
305.773° · 67.888°
HTM-20 index
1856032945
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