Key parameters at a glance
- A radius of 1.90 Earth radii
- A mass of 9.00 Earth masses
- Surface gravity around 2.49 g
- An orbital period of 13.609 days
- Semi-major axis 0.1123 AU
- Equilibrium temperature 755 K (482 °C)
- Distance from Earth 3,690.91 light-years
- Earth Similarity Index 0.368
- Travel time at Voyager 1 speed 65,089,225 years
1 sibling around KOI-1599
KOI-1599.02 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 |
|---|---|---|---|---|---|---|
| KOI-1599.02 this | Super-Earth | 1.90 | 9.00 | 13.609 | 755 | 2019 |
| KOI-1599.01 | Super-Earth | 1.90 | 4.60 | 20.442 | 660 | 2019 |
KOI-1599.02 Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#125of 1176
top 10.5%
This planet
1.90R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | KOI-1599.02 | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.90 | 11.21 |
| Mass (M⊕) | 1.00 | 9.00 | 317.83 |
| Density (g/cm³) | 5.51 | 7.21 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.49 | 2.53 |
| Insolation (S⊕) | 1.00 | 76.81 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 9.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 170647523
Gaia DR2
Gaia DR2 2073779161653824640
Gaia DR3
Gaia DR3 2073779161653824640
System
KOI-1599
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 13.61 Earth days (3.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1123 AU.
Transit Fingerprint
Depth
0.038 %
Duration
5.175 h
Impact parameter b
0.840
Rp / R★
0.018100
Transit midpoint (BJD)
2,454,960.3200
Photometric dip
Transit produces a flux drop of 376 ppm lasting ≈ 5.18 h.
Extended Orbital Architecture
Planet / star radius ratio
0.018100
Semi-major axis / stellar radius
24.890
Impact parameter (b)
0.840
Transit mid-time (BJD)
2,454,960.3200
Long. of periastron (ω)
49.95°
Angular separation (arcsec)
0.09920
Eq. Temperature
755K
(482 °C)
Insolation (S⊕)
76.81
Earth = 1.00
Earth Similarity (ESI)
0.368
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Transit timing variations
Gravitational interactions from neighbours have been detected.
Discovery Paper
Primary reference
Panichi et al. 2019Instrument
Kepler CCD Array
Publication
2019-06
Observation locale
Space
Discovery cohort
Planets confirmed in 2019 at Kepler (2 shown).
Host System: KOI-1599
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,833 K — hotter than the Sun (5,778 K)
Estimated Age
4.70 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.972 R☉
Stellar Mass
1.020 M☉
Metallicity [Fe/H]
0.06
Extended Stellar Properties
Surface gravity (log g)
4.472 dex
Stellar density
0.017 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.855 mas
Total Proper Motion
2.377 mas/yr
PM Right Ascension
-0.79 mas/yr
PM Declination
2.24 mas/yr
Galactic Cartesian (pc)
x = 0.361 · y = -0.668 · z = 0.651
Equatorial (J2000)
RA 298.37384° · Dec 40.61845°
Galactic ℓ, b
75.507° · 6.670°
Ecliptic λ, β
315.551° · 59.651°
HTM-20 index
-633531986
Similar Worlds
Kepler-60 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.90 R⊕ · 3,343.4 ly
Kepler-1177 b
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Kepler-1078 b
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