Key parameters at a glance
- A radius of 1.58 Earth radii
- A mass of 3.12 Earth masses
- Surface gravity around 1.25 g
- An orbital period of 31.592 days
- Semi-major axis 0.2211 AU
- Equilibrium temperature 688 K (415 °C)
- Distance from Earth 4,252.16 light-years
- Earth Similarity Index 0.433
- Travel time at Voyager 1 speed 74,986,855 years
1 sibling around Kepler-784
Kepler-784 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-784 c | Super-Earth | 1.55 | 3.02 | 17.157 | 844 | 2023 |
| Kepler-784 b this | Super-Earth | 1.58 | 3.12 | 31.592 | 688 | 2016 |
Kepler-784 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#603of 1176
top 51.2%
This planet
1.58R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-784 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.58 | 11.21 |
| Mass (M⊕) | 1.00 | 3.12 | 317.83 |
| Density (g/cm³) | 5.51 | 4.35 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.25 | 2.53 |
| Insolation (S⊕) | 1.00 | 194.39 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 272078218
Gaia DR2
Gaia DR2 2080605823183999616
Gaia DR3
Gaia DR3 2080605823183999616
System
Kepler-784
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 31.59 Earth days (8.6% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.2211 AU.
Transit Fingerprint
Depth
0.015 %
Duration
13.840 h
Impact parameter b
0.283
Rp / R★
0.011467
Transit midpoint (BJD)
2,454,975.9664
Photometric dip
Transit produces a flux drop of 145 ppm lasting ≈ 13.84 h.
Extended Orbital Architecture
Planet / star radius ratio
0.011467
Semi-major axis / stellar radius
19.200
Impact parameter (b)
0.283
Transit mid-time (BJD)
2,454,975.9664
Angular separation (arcsec)
0.17000
Eq. Temperature
688K
(415 °C)
Insolation (S⊕)
194.39
Earth = 1.00
Earth Similarity (ESI)
0.433
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-784
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,674 K — cooler than the Sun (5,778 K)
Estimated Age
9.12 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.320 R☉
Stellar Mass
1.000 M☉
Metallicity [Fe/H]
0.07
Extended Stellar Properties
Surface gravity (log g)
4.190 dex
Stellar density
0.060 g/cm³
Systemic radial velocity
-0.56 km/s
Rotational v·sin i
4.80 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.738 mas
Total Proper Motion
2.817 mas/yr
PM Right Ascension
2.61 mas/yr
PM Declination
-1.06 mas/yr
Galactic Cartesian (pc)
x = 0.296 · y = -0.608 · z = 0.737
Equatorial (J2000)
RA 295.92067° · Dec 47.44862°
Galactic ℓ, b
80.685° · 11.531°
Ecliptic λ, β
318.121° · 66.609°
HTM-20 index
-2078971621
Similar Worlds
Kepler-1523 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.58 R⊕ · 2,823.2 ly
Kepler-111 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.58 R⊕ · 2,143.6 ly
K2-65 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.58 R⊕ · 235.5 ly
K2-396 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.58 R⊕ · 896.5 ly
Kepler-1001 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.58 R⊕ · 3,029.9 ly
Kepler-1865 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.58 R⊕ · 3,008.0 ly