Key parameters at a glance
- A radius of 1.67 Earth radii
- A mass of 3.43 Earth masses
- Surface gravity around 1.23 g
- An orbital period of 10.446 days
- Semi-major axis 0.0940 AU
- Equilibrium temperature 812 K (539 °C)
- Distance from Earth 3,582.66 light-years
- Earth Similarity Index 0.360
- Travel time at Voyager 1 speed 63,180,216 years
1 sibling around Kepler-300
Kepler-300 b 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 |
|---|---|---|---|---|---|---|
| Kepler-300 b this | Super-Earth | 1.67 | 3.43 | 10.446 | 812 | 2014 |
| Kepler-300 c | Sub-Neptune | 2.25 | 5.69 | 40.715 | 516 | 2014 |
Kepler-300 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#452of 1176
top 38.4%
This planet
1.67R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-300 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.67 | 11.21 |
| Mass (M⊕) | 1.00 | 3.43 | 317.83 |
| Density (g/cm³) | 5.51 | 4.05 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.23 | 2.53 |
| Insolation (S⊕) | 1.00 | 265.19 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 27458633
Gaia DR2
Gaia DR2 2134730897967299968
Gaia DR3
Gaia DR3 2134730897967299968
System
Kepler-300
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 10.45 Earth days (2.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0940 AU.
Transit Fingerprint
Depth
0.035 %
Duration
2.190 h
Impact parameter b
0.330
Rp / R★
0.021140
Transit midpoint (BJD)
2,454,966.2780
Photometric dip
Transit produces a flux drop of 354 ppm lasting ≈ 2.19 h.
Extended Orbital Architecture
Planet / star radius ratio
0.021140
Semi-major axis / stellar radius
13.000
Impact parameter (b)
0.330
Transit mid-time (BJD)
2,454,966.2780
Angular separation (arcsec)
0.08560
Eq. Temperature
812K
(539 °C)
Insolation (S⊕)
265.19
Earth = 1.00
Earth Similarity (ESI)
0.360
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
Rowe et al. 2014Instrument
Kepler CCD Array
Publication
2014-03
Observation locale
Space
Discovery cohort
Planets confirmed in 2014 at Kepler (12 shown).
Host System: Kepler-300
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,986 K — hotter than the Sun (5,778 K)
Estimated Age
3.63 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.900 R☉
Stellar Mass
1.070 M☉
Metallicity [Fe/H]
0.04
Extended Stellar Properties
Surface gravity (log g)
4.532 dex
Stellar density
0.400 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.882 mas
Total Proper Motion
2.557 mas/yr
PM Right Ascension
1.96 mas/yr
PM Declination
-1.64 mas/yr
Galactic Cartesian (pc)
x = 0.283 · y = -0.598 · z = 0.750
Equatorial (J2000)
RA 295.28869° · Dec 48.59972°
Galactic ℓ, b
81.530° · 12.437°
Ecliptic λ, β
318.463° · 67.828°
HTM-20 index
1861404682
Similar Worlds
Kepler-288 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 3,894.8 ly
Kepler-322 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 1,306.2 ly
Kepler-1476 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 3,270.5 ly
Kepler-1252 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 2,116.7 ly
Kepler-24 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 3,773.0 ly
Kepler-1123 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.67 R⊕ · 2,297.2 ly