Key parameters at a glance
- A radius of 2.65 Earth radii
- A mass of 7.52 Earth masses
- Surface gravity around 1.07 g
- An orbital period of 51.067 days
- Semi-major axis 0.2749 AU
- Equilibrium temperature 499 K (226 °C)
- Distance from Earth 3,084.70 light-years
- Earth Similarity Index 0.486
- Travel time at Voyager 1 speed 54,398,715 years
2 siblings around Kepler-616
Kepler-616 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-616 b | Sub-Neptune | 2.43 | 6.48 | 9.998 | 860 | 2016 |
| Kepler-616 d this | Sub-Neptune | 2.65 | 7.52 | 51.067 | 499 | 2021 |
| Kepler-616 c | Sub-Neptune | 3.41 | 11.50 | 90.411 | 413 | 2016 |
Kepler-616 d Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#944of 1978
top 47.7%
This planet
2.65R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-616 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.65 | 11.21 |
| Mass (M⊕) | 1.00 | 7.52 | 317.83 |
| Density (g/cm³) | 5.51 | 2.21 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.07 | 2.53 |
| Insolation (S⊕) | 1.00 | 14.69 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 271355361
Gaia DR2
Gaia DR2 2080484842545877120
Gaia DR3
Gaia DR3 2080484842545877120
System
Kepler-616
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 51.07 Earth days (14.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2749 AU.
Transit Fingerprint
Depth
0.069 %
Duration
4.407 h
Impact parameter b
0.465
Rp / R★
0.024575
Transit midpoint (BJD)
2,454,980.6121
Photometric dip
Transit produces a flux drop of 692 ppm lasting ≈ 4.41 h.
Extended Orbital Architecture
Planet / star radius ratio
0.024575
Semi-major axis / stellar radius
36.000
Impact parameter (b)
0.465
Transit mid-time (BJD)
2,454,980.6121
Angular separation (arcsec)
0.29100
Eq. Temperature
499K
(226 °C)
Insolation (S⊕)
14.69
Earth = 1.00
Earth Similarity (ESI)
0.486
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
Valizadegan et al. 2022Instrument
Kepler CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Kepler (12 shown).
Host System: Kepler-616
Spectral Class
F-type yellow-white
Effective Temperature
6,004 K — hotter than the Sun (5,778 K)
Estimated Age
0.40 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.977 R☉
Stellar Mass
1.061 M☉
Metallicity [Fe/H]
-0.02
Extended Stellar Properties
Surface gravity (log g)
4.484 dex
Stellar density
3.778 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 15 bands
Astrometric Data
Parallax
1.029 mas
Total Proper Motion
9.478 mas/yr
PM Right Ascension
-1.70 mas/yr
PM Declination
-9.32 mas/yr
Galactic Cartesian (pc)
x = 0.289 · y = -0.620 · z = 0.729
Equatorial (J2000)
RA 294.98914° · Dec 46.83831°
Galactic ℓ, b
79.834° · 11.811°
Ecliptic λ, β
316.032° · 66.329°
HTM-20 index
-1132860512
Similar Worlds
Kepler-1931 b
Sub-Neptune · F-type yellow-white
Radius 2.65 R⊕ · 2,022.5 ly
Kepler-145 b
Sub-Neptune · F-type yellow-white
Radius 2.65 R⊕ · 1,848.8 ly
Kepler-1941 b
Sub-Neptune · F-type yellow-white
Radius 2.65 R⊕ · 4,874.0 ly
Kepler-346 b
Sub-Neptune · F-type yellow-white
Radius 2.66 R⊕ · 3,209.7 ly
Kepler-127 c
Sub-Neptune · F-type yellow-white
Radius 2.66 R⊕ · 1,150.7 ly
Kepler-1551 b
Sub-Neptune · F-type yellow-white
Radius 2.66 R⊕ · 4,774.0 ly