Key parameters at a glance
- A radius of 2.80 Earth radii
- A mass of 7,310.05 Earth masses
- Surface gravity around 930.91 g
- An orbital period of 19.005 days
- Semi-major axis 0.5000 AU
- Equilibrium temperature 758 K (485 °C)
- Distance from Earth 4,467.91 light-years
- Earth Similarity Index 0.056
- Travel time at Voyager 1 speed 78,791,645 years
KOI-2513.01 Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#741of 1978
top 37.4%
This planet
2.80R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | KOI-2513.01 | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.80 | 11.21 |
| Mass (M⊕) | 1.00 | 7,310.05 | 317.83 |
| Density (g/cm³) | 5.51 | 2,000.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 930.91 | 2.53 |
| Insolation (S⊕) | 1.00 | 78.19 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 7,310.053 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 270618386
Gaia DR2
Gaia DR2 2128167225867000576
Gaia DR3
Gaia DR3 2128167225867000576
System
KOI-2513
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 19.01 Earth days (5.2% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.5000 AU.
Transit Fingerprint
Depth
0.054 %
Duration
1.843 h
Impact parameter b
1.895
Rp / R★
0.022000
Transit midpoint (BJD)
2,454,977.1520
Photometric dip
Transit produces a flux drop of 542 ppm lasting ≈ 1.84 h.
Extended Orbital Architecture
Planet / star radius ratio
0.022000
Semi-major axis / stellar radius
100.000
Impact parameter (b)
1.895
RV semi-amplitude (K)
2.000 m/s
Transit mid-time (BJD)
2,454,977.1520
Long. of periastron (ω)
-154.00°
Angular separation (arcsec)
0.36500
Eq. Temperature
758K
(485 °C)
Insolation (S⊕)
78.19
Earth = 1.00
Earth Similarity (ESI)
0.056
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.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Ca Ntilde As et al. 2023Instrument
Kepler CCD Array
Publication
2023-04
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Kepler (12 shown).
Host System: KOI-2513
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,900 K — hotter than the Sun (5,778 K)
Estimated Age
8.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.200 R☉
Stellar Mass
0.910 M☉
Metallicity [Fe/H]
-0.37
Extended Stellar Properties
Surface gravity (log g)
4.300 dex
Stellar density
0.800 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Total Proper Motion
6.362 mas/yr
PM Right Ascension
2.74 mas/yr
PM Declination
-5.74 mas/yr
Galactic Cartesian (pc)
x = 0.277 · y = -0.632 · z = 0.724
Equatorial (J2000)
RA 293.66888° · Dec 46.37923°
Galactic ℓ, b
78.996° · 12.412°
Ecliptic λ, β
313.506° · 66.280°
HTM-20 index
-1426571008
Similar Worlds
Kepler-1469 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.80 R⊕ · 3,781.1 ly
Kepler-276 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.80 R⊕ · 3,734.0 ly
Kepler-66 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.80 R⊕ · 3,923.5 ly
HD 21693 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.80 R⊕ · 108.5 ly
Kepler-694 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.80 R⊕ · 3,336.8 ly
Kepler-259 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.80 R⊕ · 3,268.5 ly