Key parameters at a glance
- A radius of 3.29 Earth radii
- A mass of 10.90 Earth masses
- Surface gravity around 1.01 g
- An orbital period of 42.427 days
- Semi-major axis 0.2262 AU
- Equilibrium temperature 496 K (223 °C)
- Distance from Earth 2,800.93 light-years
- Earth Similarity Index 0.448
- Travel time at Voyager 1 speed 49,394,396 years
1 sibling around Kepler-1090
Kepler-1090 c 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-1090 c this | Sub-Neptune | 3.29 | 10.90 | 42.427 | 496 | 2021 |
| Kepler-1090 b | Sub-Neptune | 2.25 | 5.69 | 198.680 | 297 | 2016 |
Kepler-1090 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#286of 1978
top 14.4%
This planet
3.29R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1090 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.29 | 11.21 |
| Mass (M⊕) | 1.00 | 10.90 | 317.83 |
| Density (g/cm³) | 5.51 | 1.68 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.01 | 2.53 |
| Insolation (S⊕) | 1.00 | 13.80 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 271885110
Gaia DR2
Gaia DR2 2079650828617180288
Gaia DR3
Gaia DR3 2079650828617180288
System
Kepler-1090
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 42.43 Earth days (11.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2262 AU.
Transit Fingerprint
Depth
0.066 %
Duration
6.133 h
Impact parameter b
0.962
Rp / R★
0.028450
Transit midpoint (BJD)
2,454,989.1893
Photometric dip
Transit produces a flux drop of 659 ppm lasting ≈ 6.13 h.
Extended Orbital Architecture
Planet / star radius ratio
0.028450
Semi-major axis / stellar radius
28.300
Impact parameter (b)
0.962
Transit mid-time (BJD)
2,454,989.1893
Angular separation (arcsec)
0.26300
Eq. Temperature
496K
(223 °C)
Insolation (S⊕)
13.80
Earth = 1.00
Earth Similarity (ESI)
0.448
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
Valizadegan et al. 2022Instrument
Kepler CCD Array
Publication
2022-02
Observation locale
Space
Discovery cohort
Planets confirmed in 2021 at Kepler (12 shown).
Host System: Kepler-1090
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,330 K — cooler than the Sun (5,778 K)
Estimated Age
12.59 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.013 R☉
Stellar Mass
0.869 M☉
Metallicity [Fe/H]
0.18
Extended Stellar Properties
Surface gravity (log g)
4.366 dex
Stellar density
0.090 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.137 mas
Total Proper Motion
4.013 mas/yr
PM Right Ascension
3.59 mas/yr
PM Declination
1.79 mas/yr
Galactic Cartesian (pc)
x = 0.309 · y = -0.643 · z = 0.701
Equatorial (J2000)
RA 295.66290° · Dec 44.52582°
Galactic ℓ, b
77.970° · 10.320°
Ecliptic λ, β
314.821° · 64.025°
HTM-20 index
-1130536882
Similar Worlds
Kepler-724 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.29 R⊕ · 2,782.5 ly
TOI-1794 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.30 R⊕ · 508.1 ly
K2-201 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.29 R⊕ · 645.6 ly
Kepler-464 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.30 R⊕ · 2,177.4 ly
Kepler-1467 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.30 R⊕ · 2,781.7 ly
Kepler-610 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 3.30 R⊕ · 2,758.7 ly