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 8.222 days
- Semi-major axis 0.0683 AU
- Equilibrium temperature 558 K (285 °C)
- Distance from Earth 1,056.42 light-years
- Earth Similarity Index 0.445
- Travel time at Voyager 1 speed 18,629,896 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-580 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-580 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 | 24.06 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 237188565
Gaia DR2
Gaia DR2 2103578400656053632
Gaia DR3
Gaia DR3 2103578400656053632
System
Kepler-580
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.22 Earth days (2.3% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0683 AU.
Transit Fingerprint
Depth
0.147 %
Duration
2.705 h
Impact parameter b
0.246
Rp / R★
0.037300
Transit midpoint (BJD)
2,455,005.9560
Photometric dip
Transit produces a flux drop of 1,469 ppm lasting ≈ 2.70 h.
Extended Orbital Architecture
Planet / star radius ratio
0.037300
Semi-major axis / stellar radius
23.280
Impact parameter (b)
0.246
Transit mid-time (BJD)
2,455,005.9560
Angular separation (arcsec)
0.21100
Eq. Temperature
558K
(285 °C)
Insolation (S⊕)
24.06
Earth = 1.00
Earth Similarity (ESI)
0.445
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
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-580
Spectral Class
K-type orange
Effective Temperature
4,298 K — cooler than the Sun (5,778 K)
Estimated Age
3.47 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.640 R☉
Stellar Mass
0.670 M☉
Metallicity [Fe/H]
-0.06
Extended Stellar Properties
Surface gravity (log g)
4.660 dex
Stellar density
3.532 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
3.059 mas
Total Proper Motion
16.817 mas/yr
PM Right Ascension
-5.88 mas/yr
PM Declination
15.76 mas/yr
Galactic Cartesian (pc)
x = 0.177 · y = -0.739 · z = 0.650
Equatorial (J2000)
RA 283.49975° · Dec 40.55281°
Galactic ℓ, b
70.409° · 16.792°
Ecliptic λ, β
292.928° · 62.921°
HTM-20 index
-899582341
Similar Worlds
Kepler-532 b
Sub-Neptune · K-type orange
Radius 2.57 R⊕ · 1,020.2 ly
Kepler-241 c
Sub-Neptune · K-type orange
Radius 2.57 R⊕ · 1,669.9 ly
Kepler-660 b
Sub-Neptune · K-type orange
Radius 2.57 R⊕ · 1,854.0 ly
Kepler-245 b
Sub-Neptune · K-type orange
Radius 2.57 R⊕ · 2,809.9 ly
TOI-1174 b
Sub-Neptune · K-type orange
Radius 2.56 R⊕ · 308.7 ly
KOI-1833 d
Sub-Neptune · K-type orange
Radius 2.58 R⊕ · 946.9 ly