Key parameters at a glance
- A radius of 2.87 Earth radii
- A mass of 8.60 Earth masses
- Surface gravity around 1.04 g
- An orbital period of 11.806 days
- Semi-major axis 0.1216 AU
- Equilibrium temperature 1,407 K (1134 °C)
- Distance from Earth 1,961.25 light-years
- Earth Similarity Index 0.162
- Travel time at Voyager 1 speed 34,586,718 years
1 sibling around Kepler-880
Kepler-880 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-880 b | Sub-Neptune | 2.66 | 7.56 | 7.715 | 1,622 | 2016 |
| Kepler-880 c this | Sub-Neptune | 2.87 | 8.60 | 11.806 | 1,407 | 2023 |
Kepler-880 c Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#659of 1978
top 33.3%
This planet
2.87R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-880 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.87 | 11.21 |
| Mass (M⊕) | 1.00 | 8.60 | 317.83 |
| Density (g/cm³) | 5.51 | 2.00 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.04 | 2.53 |
| Insolation (S⊕) | 1.00 | 926.72 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 351803495
Gaia DR2
Gaia DR2 2105274977158196480
Gaia DR3
Gaia DR3 2105274977158196480
System
Kepler-880
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 11.81 Earth days (3.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1216 AU.
Transit Fingerprint
Depth
0.009 %
Duration
4.472 h
Impact parameter b
0.905
Rp / R★
0.010108
Transit midpoint (BJD)
2,454,971.2641
Photometric dip
Transit produces a flux drop of 88 ppm lasting ≈ 4.47 h.
Extended Orbital Architecture
Planet / star radius ratio
0.010108
Semi-major axis / stellar radius
9.080
Impact parameter (b)
0.905
Transit mid-time (BJD)
2,454,971.2641
Angular separation (arcsec)
0.20200
Eq. Temperature
1,407K
(1134 °C)
Insolation (S⊕)
926.72
Earth = 1.00
Earth Similarity (ESI)
0.162
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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. 2023Instrument
Kepler CCD Array
Publication
2023-05
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Kepler (12 shown).
Host System: Kepler-880
Spectral Class
F-type yellow-white
Effective Temperature
6,900 K — hotter than the Sun (5,778 K)
Estimated Age
1.41 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.599 R☉
Stellar Mass
1.714 M☉
Metallicity [Fe/H]
0.00
Extended Stellar Properties
Surface gravity (log g)
3.843 dex
Stellar density
0.102 g/cm³
Systemic radial velocity
-29.44 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.634 mas
Total Proper Motion
9.104 mas/yr
PM Right Ascension
2.94 mas/yr
PM Declination
8.62 mas/yr
Galactic Cartesian (pc)
x = 0.150 · y = -0.708 · z = 0.691
Equatorial (J2000)
RA 281.97123° · Dec 43.67278°
Galactic ℓ, b
73.053° · 18.957°
Ecliptic λ, β
291.828° · 66.207°
HTM-20 index
-601720783
Similar Worlds
KOI-351 d
Sub-Neptune · F-type yellow-white
Radius 2.87 R⊕ · 2,766.6 ly
TOI-1052 b
Sub-Neptune · F-type yellow-white
Radius 2.87 R⊕ · 423.4 ly
Kepler-276 b
Sub-Neptune · F-type yellow-white
Radius 2.87 R⊕ · 3,734.0 ly
KOI-351 f
Sub-Neptune · F-type yellow-white
Radius 2.88 R⊕ · 2,766.6 ly
Kepler-1723 b
Sub-Neptune · F-type yellow-white
Radius 2.88 R⊕ · 2,646.0 ly
Kepler-1666 b
Sub-Neptune · F-type yellow-white
Radius 2.88 R⊕ · 4,498.9 ly