Key parameters at a glance
- A radius of 2.66 Earth radii
- A mass of 7.56 Earth masses
- Surface gravity around 1.07 g
- An orbital period of 7.715 days
- Semi-major axis 0.0915 AU
- Equilibrium temperature 1,622 K (1349 °C)
- Distance from Earth 1,961.25 light-years
- Earth Similarity Index 0.141
- Travel time at Voyager 1 speed 34,586,718 years
1 sibling around Kepler-880
Kepler-880 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-880 b this | Sub-Neptune | 2.66 | 7.56 | 7.715 | 1,622 | 2016 |
| Kepler-880 c | Sub-Neptune | 2.87 | 8.60 | 11.806 | 1,407 | 2023 |
Kepler-880 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#928of 1978
top 46.9%
This planet
2.66R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-880 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.66 | 11.21 |
| Mass (M⊕) | 1.00 | 7.56 | 317.83 |
| Density (g/cm³) | 5.51 | 2.21 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.07 | 2.53 |
| Insolation (S⊕) | 1.00 | 586.17 | 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 7.71 Earth days (2.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0915 AU.
Transit Fingerprint
Depth
0.021 %
Duration
4.296 h
Impact parameter b
0.609
Rp / R★
0.013570
Transit midpoint (BJD)
2,454,966.5548
Photometric dip
Transit produces a flux drop of 215 ppm lasting ≈ 4.30 h.
Extended Orbital Architecture
Planet / star radius ratio
0.013570
Semi-major axis / stellar radius
13.917
Impact parameter (b)
0.609
Transit mid-time (BJD)
2,454,966.5548
Angular separation (arcsec)
0.15200
Eq. Temperature
1,622K
(1349 °C)
Insolation (S⊕)
586.17
Earth = 1.00
Earth Similarity (ESI)
0.141
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
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-880
Spectral Class
F-type yellow-white
Effective Temperature
6,761 K — hotter than the Sun (5,778 K)
Estimated Age
1.66 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.740 R☉
Stellar Mass
1.460 M☉
Metallicity [Fe/H]
0.03
Extended Stellar Properties
Surface gravity (log g)
4.120 dex
Stellar density
0.565 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
Kepler-346 b
Sub-Neptune · F-type yellow-white
Radius 2.66 R⊕ · 3,209.7 ly
Kepler-127 c
Sub-Neptune · F-type yellow-white
Radius 2.66 R⊕ · 1,150.7 ly
Kepler-1551 b
Sub-Neptune · F-type yellow-white
Radius 2.66 R⊕ · 4,774.0 ly
KOI-351 e
Sub-Neptune · F-type yellow-white
Radius 2.66 R⊕ · 2,766.6 ly
TOI-3353.01
Sub-Neptune · F-type yellow-white
Radius 2.67 R⊕ · 256.9 ly
Kepler-1931 b
Sub-Neptune · F-type yellow-white
Radius 2.65 R⊕ · 2,022.5 ly