Key parameters at a glance
- A radius of 2.34 Earth radii
- A mass of 6.08 Earth masses
- Surface gravity around 1.11 g
- An orbital period of 24.279 days
- Semi-major axis 0.1456 AU
- Equilibrium temperature 432 K (159 °C)
- Distance from Earth 884.79 light-years
- Earth Similarity Index 0.577
- Travel time at Voyager 1 speed 15,603,204 years
- Almost certainly tidally locked to its host star given the close orbit
KOI-7913 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1429of 1978
top 72.2%
This planet
2.34R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | KOI-7913 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.34 | 11.21 |
| Mass (M⊕) | 1.00 | 6.08 | 317.83 |
| Density (g/cm³) | 5.51 | 2.61 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.11 | 2.53 |
| Insolation (S⊕) | 1.00 | 8.27 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 158320130
Gaia DR2
Gaia DR2 2106235301785454208
Gaia DR3
Gaia DR3 2106235301785454208
System
KOI-7913
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 24.28 Earth days (6.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1456 AU.
Transit Fingerprint
Depth
0.071 %
Duration
4.390 h
Impact parameter b
0.312
Rp / R★
0.027000
Transit midpoint (BJD)
2,454,987.5121
Photometric dip
Transit produces a flux drop of 714 ppm lasting ≈ 4.39 h.
Extended Orbital Architecture
Planet / star radius ratio
0.027000
Semi-major axis / stellar radius
40.920
Impact parameter (b)
0.312
Transit mid-time (BJD)
2,454,987.5121
Angular separation (arcsec)
0.53700
Eq. Temperature
432K
(159 °C)
Insolation (S⊕)
8.27
Earth = 1.00
Earth Similarity (ESI)
0.577
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
Bouma et al. 2022Instrument
Kepler CCD Array
Publication
2022-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2022 at Kepler (6 shown).
Host System: KOI-7913 A
Spectral Class
K-type orange
Effective Temperature
4,324 K — cooler than the Sun (5,778 K)
Estimated Age
0.04 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.788 R☉
Stellar Mass
0.760 M☉
Metallicity [Fe/H]
-0.06
Extended Stellar Properties
Surface gravity (log g)
4.523 dex
Stellar density
2.200 g/cm³
Systemic radial velocity
-17.80 km/s
Rotational v·sin i
13.30 km/s
Rotation period
3.39 days
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.657 mas
Total Proper Motion
2.683 mas/yr
PM Right Ascension
2.49 mas/yr
PM Declination
0.99 mas/yr
Galactic Cartesian (pc)
x = 0.203 · y = -0.675 · z = 0.709
Equatorial (J2000)
RA 286.74853° · Dec 45.15872°
Galactic ℓ, b
75.793° · 16.305°
Ecliptic λ, β
301.050° · 66.801°
HTM-20 index
-1931841691
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