Key parameters at a glance
- A radius of 2.30 Earth radii
- A mass of 5.90 Earth masses
- Surface gravity around 1.12 g
- An orbital period of 8.679 days
- Semi-major axis 0.0805 AU
- Equilibrium temperature 905 K (632 °C)
- Distance from Earth 2,641.53 light-years
- Earth Similarity Index 0.287
- Travel time at Voyager 1 speed 46,583,338 years
2 siblings around Kepler-1073
Kepler-1073 b shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-1073 d | Super-Earth | 1.49 | 2.82 | 2.505 | 1,369 | 2021 |
| Kepler-1073 c | Super-Earth | 1.64 | 3.33 | 4.026 | 1,169 | 2016 |
| Kepler-1073 b this | Sub-Neptune | 2.30 | 5.90 | 8.679 | 905 | 2016 |
Kepler-1073 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1499of 1978
top 75.7%
This planet
2.30R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1073 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.30 | 11.21 |
| Mass (M⊕) | 1.00 | 5.90 | 317.83 |
| Density (g/cm³) | 5.51 | 2.66 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.12 | 2.53 |
| Insolation (S⊕) | 1.00 | 128.55 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 138568416
Gaia DR2
Gaia DR2 2052069201482198784
Gaia DR3
Gaia DR3 2052069201482198784
System
Kepler-1073
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 8.68 Earth days (2.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0805 AU.
Transit Fingerprint
Depth
0.054 %
Duration
3.482 h
Impact parameter b
0.700
Rp / R★
0.021428
Transit midpoint (BJD)
2,454,966.0376
Photometric dip
Transit produces a flux drop of 541 ppm lasting ≈ 3.48 h.
Extended Orbital Architecture
Planet / star radius ratio
0.021428
Semi-major axis / stellar radius
19.452
Impact parameter (b)
0.700
Transit mid-time (BJD)
2,454,966.0376
Angular separation (arcsec)
0.09940
Eq. Temperature
905K
(632 °C)
Insolation (S⊕)
128.55
Earth = 1.00
Earth Similarity (ESI)
0.287
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
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-1073
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,792 K — hotter than the Sun (5,778 K)
Estimated Age
3.72 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.000 R☉
Stellar Mass
1.000 M☉
Metallicity [Fe/H]
0.00
Extended Stellar Properties
Surface gravity (log g)
4.440 dex
Stellar density
1.849 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.206 mas
Total Proper Motion
12.119 mas/yr
PM Right Ascension
4.72 mas/yr
PM Declination
11.16 mas/yr
Galactic Cartesian (pc)
x = 0.321 · y = -0.717 · z = 0.619
Equatorial (J2000)
RA 294.15273° · Dec 38.23309°
Galactic ℓ, b
71.804° · 8.354°
Ecliptic λ, β
307.993° · 58.528°
HTM-20 index
1080867558
Similar Worlds
Kepler-1052 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 3,077.1 ly
K2-183 d
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 1,073.2 ly
Kepler-770 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 3,034.7 ly
EPIC 212624936 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 1,832.8 ly
K2-183 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 1,073.2 ly
K2-138 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.30 R⊕ · 660.7 ly