Key parameters at a glance
- A radius of 1.37 Earth radii
- A mass of 2.45 Earth masses
- Surface gravity around 1.31 g
- An orbital period of 3.517 days
- Semi-major axis 0.0378 AU
- Equilibrium temperature 704 K (431 °C)
- Distance from Earth 828.00 light-years
- Earth Similarity Index 0.442
- Travel time at Voyager 1 speed 14,601,822 years
- Almost certainly tidally locked to its host star given the close orbit
Kepler-901 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#966of 1176
top 82.1%
This planet
1.37R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-901 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.37 | 11.21 |
| Mass (M⊕) | 1.00 | 2.45 | 317.83 |
| Density (g/cm³) | 5.51 | 5.24 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.31 | 2.53 |
| Insolation (S⊕) | 1.00 | 68.72 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 122712179
Gaia DR2
Gaia DR2 2101525749889208576
Gaia DR3
Gaia DR3 2101525749889208576
System
Kepler-901
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.52 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0378 AU.
Transit Fingerprint
Depth
0.056 %
Duration
1.485 h
Impact parameter b
0.027
Rp / R★
0.021645
Transit midpoint (BJD)
2,454,968.5466
Photometric dip
Transit produces a flux drop of 561 ppm lasting ≈ 1.48 h.
Extended Orbital Architecture
Planet / star radius ratio
0.021645
Semi-major axis / stellar radius
18.494
Impact parameter (b)
0.027
Transit mid-time (BJD)
2,454,968.5466
Angular separation (arcsec)
0.14900
Eq. Temperature
704K
(431 °C)
Insolation (S⊕)
68.72
Earth = 1.00
Earth Similarity (ESI)
0.442
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
Morton et al. 2016Instrument
Kepler CCD Array
Publication
2016-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at Kepler (12 shown).
Host System: Kepler-901
Spectral Class
K-type orange
Effective Temperature
4,184 K — cooler than the Sun (5,778 K)
Estimated Age
3.80 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.570 R☉
Stellar Mass
0.590 M☉
Metallicity [Fe/H]
-0.30
Extended Stellar Properties
Surface gravity (log g)
4.700 dex
Stellar density
9.672 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.910 mas
Total Proper Motion
41.089 mas/yr
PM Right Ascension
-22.46 mas/yr
PM Declination
34.41 mas/yr
Galactic Cartesian (pc)
x = 0.273 · y = -0.705 · z = 0.655
Equatorial (J2000)
RA 291.15281° · Dec 40.88768°
Galactic ℓ, b
73.137° · 11.620°
Ecliptic λ, β
305.212° · 61.766°
HTM-20 index
1621031459
Similar Worlds
Kepler-240 b
Super-Earth · K-type orange
Radius 1.37 R⊕ · 2,436.1 ly
K2-368 c
Super-Earth · K-type orange
Radius 1.36 R⊕ · 673.9 ly
Kepler-1315 b
Super-Earth · K-type orange
Radius 1.38 R⊕ · 1,568.4 ly
Kepler-1120 b
Super-Earth · K-type orange
Radius 1.38 R⊕ · 2,006.6 ly
K2-270 b
Super-Earth · K-type orange
Radius 1.38 R⊕ · 914.9 ly
Kepler-1246 b
Super-Earth · K-type orange
Radius 1.36 R⊕ · 1,423.7 ly