Key parameters at a glance
- A radius of 1.65 Earth radii
- A mass of 3.36 Earth masses
- Surface gravity around 1.23 g
- An orbital period of 9.024 days
- Semi-major axis 0.0870 AU
- Equilibrium temperature 939 K (666 °C)
- Distance from Earth 2,759.18 light-years
- Earth Similarity Index 0.310
- Travel time at Voyager 1 speed 48,658,170 years
1 sibling around Kepler-400
Kepler-400 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-400 b this | Super-Earth | 1.65 | 3.36 | 9.024 | 939 | 2014 |
| Kepler-400 c | Super-Earth | 1.49 | 2.83 | 17.341 | 755 | 2014 |
Kepler-400 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#485of 1176
top 41.2%
This planet
1.65R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-400 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.65 | 11.21 |
| Mass (M⊕) | 1.00 | 3.36 | 317.83 |
| Density (g/cm³) | 5.51 | 4.11 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.23 | 2.53 |
| Insolation (S⊕) | 1.00 | 183.39 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 122707140
Gaia DR2
Gaia DR2 2101510008826160256
System
Kepler-400
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 9.02 Earth days (2.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0870 AU.
Transit Fingerprint
Depth
0.021 %
Duration
3.128 h
Impact parameter b
0.010
Rp / R★
0.013472
Transit midpoint (BJD)
2,454,966.5385
Photometric dip
Transit produces a flux drop of 215 ppm lasting ≈ 3.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.013472
Semi-major axis / stellar radius
23.210
Impact parameter (b)
0.010
Transit mid-time (BJD)
2,454,966.5385
Angular separation (arcsec)
0.10300
Eq. Temperature
939K
(666 °C)
Insolation (S⊕)
183.39
Earth = 1.00
Earth Similarity (ESI)
0.310
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-400
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,886 K — hotter than the Sun (5,778 K)
Estimated Age
3.63 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.145 R☉
Stellar Mass
1.080 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.350 dex
Stellar density
2.386 g/cm³
Metallicity ratio
[M/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Total Proper Motion
4.907 mas/yr
PM Right Ascension
-3.93 mas/yr
PM Declination
-2.94 mas/yr
Galactic Cartesian (pc)
x = 0.272 · y = -0.710 · z = 0.649
Equatorial (J2000)
RA 290.94447° · Dec 40.48005°
Galactic ℓ, b
72.692° · 11.584°
Ecliptic λ, β
304.638° · 61.424°
HTM-20 index
1353305647
Similar Worlds
Kepler-1530 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.65 R⊕ · 1,597.8 ly
Kepler-1368 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.65 R⊕ · 5,335.3 ly
Kepler-1330 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.65 R⊕ · 5,611.4 ly
Kepler-611 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.65 R⊕ · 4,551.7 ly
Kepler-1488 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.65 R⊕ · 2,954.4 ly
TOI-1799 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.64 R⊕ · 202.6 ly