Key parameters at a glance
- A radius of 1.73 Earth radii
- A mass of 3.64 Earth masses
- Surface gravity around 1.22 g
- An orbital period of 108.593 days
- Semi-major axis 0.4125 AU
- Equilibrium temperature 374 K (101 °C)
- Distance from Earth 2,073.49 light-years
- Earth Similarity Index 0.722
- Travel time at Voyager 1 speed 36,566,014 years
1 sibling around Kepler-1126
Kepler-1126 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-1126 b this | Super-Earth | 1.73 | 3.64 | 108.593 | 374 | 2016 |
| Kepler-1126 c | Super-Earth | 1.45 | 2.70 | 199.669 | 305 | 2023 |
Kepler-1126 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#356of 1176
top 30.2%
This planet
1.73R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-1126 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.73 | 11.21 |
| Mass (M⊕) | 1.00 | 3.64 | 317.83 |
| Density (g/cm³) | 5.51 | 3.86 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.22 | 2.53 |
| Insolation (S⊕) | 1.00 | 4.55 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 352013661
Gaia DR2
Gaia DR2 2106496607595412480
Gaia DR3
Gaia DR3 2106496607595412480
System
Kepler-1126
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 108.59 Earth days (29.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.4125 AU.
Transit Fingerprint
Depth
0.035 %
Duration
7.988 h
Impact parameter b
0.007
Rp / R★
0.017187
Transit midpoint (BJD)
2,455,006.7510
Photometric dip
Transit produces a flux drop of 350 ppm lasting ≈ 7.99 h.
Extended Orbital Architecture
Planet / star radius ratio
0.017187
Semi-major axis / stellar radius
105.540
Impact parameter (b)
0.007
Transit mid-time (BJD)
2,455,006.7510
Angular separation (arcsec)
0.64900
Eq. Temperature
374K
(101 °C)
Insolation (S⊕)
4.55
Earth = 1.00
Earth Similarity (ESI)
0.722
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.
Transit timing variations
Gravitational interactions from neighbours have been detected.
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-1126
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,798 K — hotter than the Sun (5,778 K)
Estimated Age
5.50 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.930 R☉
Stellar Mass
0.920 M☉
Metallicity [Fe/H]
-0.26
Extended Stellar Properties
Surface gravity (log g)
4.460 dex
Stellar density
1.080 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.544 mas
Total Proper Motion
8.485 mas/yr
PM Right Ascension
-7.70 mas/yr
PM Declination
3.56 mas/yr
Galactic Cartesian (pc)
x = 0.189 · y = -0.673 · z = 0.716
Equatorial (J2000)
RA 285.69196° · Dec 45.68940°
Galactic ℓ, b
76.018° · 17.191°
Ecliptic λ, β
299.611° · 67.522°
HTM-20 index
-1235604406
Similar Worlds
Kepler-166 d
Super-Earth · G-type yellow (Sun-like)
Radius 1.73 R⊕ · 1,968.4 ly
Kepler-1522 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.73 R⊕ · 2,655.3 ly
Kepler-1468 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.73 R⊕ · 6,194.5 ly
Kepler-1153 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.73 R⊕ · 3,651.3 ly
Kepler-1478 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.73 R⊕ · 6,019.5 ly
Kepler-238 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.73 R⊕ · 5,866.7 ly