Key parameters at a glance
- A radius of 1.50 Earth radii
- A mass of 2.86 Earth masses
- Surface gravity around 1.27 g
- An orbital period of 3.702 days
- Semi-major axis 0.0449 AU
- Equilibrium temperature 1,050 K (777 °C)
- Distance from Earth 2,221.40 light-years
- Earth Similarity Index 0.283
- Travel time at Voyager 1 speed 39,174,437 years
1 sibling around Kepler-598
Kepler-598 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-598 b this | Super-Earth | 1.50 | 2.86 | 3.702 | 1,050 | 2016 |
| Kepler-598 c | Sub-Neptune | 3.02 | 9.40 | 86.495 | 367 | 2020 |
Kepler-598 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#748of 1176
top 63.5%
This planet
1.50R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-598 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.50 | 11.21 |
| Mass (M⊕) | 1.00 | 2.86 | 317.83 |
| Density (g/cm³) | 5.51 | 4.66 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.27 | 2.53 |
| Insolation (S⊕) | 1.00 | 265.41 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 137969066
Gaia DR2
Gaia DR2 2053546910744629504
Gaia DR3
Gaia DR3 2053546910744629504
System
Kepler-598
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.70 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0449 AU.
Transit Fingerprint
Depth
0.030 %
Duration
2.626 h
Impact parameter b
0.257
Rp / R★
0.015645
Transit midpoint (BJD)
2,455,005.4504
Photometric dip
Transit produces a flux drop of 299 ppm lasting ≈ 2.63 h.
Extended Orbital Architecture
Planet / star radius ratio
0.015645
Semi-major axis / stellar radius
11.210
Impact parameter (b)
0.257
Transit mid-time (BJD)
2,455,005.4504
Angular separation (arcsec)
0.06590
Eq. Temperature
1,050K
(777 °C)
Insolation (S⊕)
265.41
Earth = 1.00
Earth Similarity (ESI)
0.283
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-598
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,307 K — cooler than the Sun (5,778 K)
Estimated Age
7.59 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.860 R☉
Stellar Mass
0.870 M☉
Metallicity [Fe/H]
0.02
Extended Stellar Properties
Surface gravity (log g)
4.510 dex
Stellar density
1.500 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.440 mas
Total Proper Motion
7.235 mas/yr
PM Right Ascension
3.57 mas/yr
PM Declination
6.29 mas/yr
Galactic Cartesian (pc)
x = 0.297 · y = -0.695 · z = 0.655
Equatorial (J2000)
RA 293.12345° · Dec 40.93480°
Galactic ℓ, b
73.857° · 10.309°
Ecliptic λ, β
308.211° · 61.342°
HTM-20 index
1938677140
Similar Worlds
Kepler-207 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 2,855.6 ly
Kepler-154 e
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 2,985.0 ly
Kepler-246 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 2,042.0 ly
Kepler-273 b
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 2,328.6 ly
Kepler-154 f
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 2,985.0 ly
K2-223 c
Super-Earth · G-type yellow (Sun-like)
Radius 1.50 R⊕ · 647.8 ly