Key parameters at a glance
- A radius of 1.32 Earth radii
- A mass of 2.30 Earth masses
- Surface gravity around 1.32 g
- An orbital period of 6.217 days
- Semi-major axis 0.0712 AU
- Equilibrium temperature 1,098 K (825 °C)
- Distance from Earth 5,021.60 light-years
- Earth Similarity Index 0.280
- Travel time at Voyager 1 speed 88,555,834 years
2 siblings around Kepler-603
Kepler-603 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| Kepler-603 d this | Super-Earth | 1.32 | 2.30 | 6.217 | 1,098 | 2016 |
| Kepler-603 b | Sub-Neptune | 2.65 | 7.51 | 21.054 | 731 | 2016 |
| Kepler-603 c | Neptune-like | 6.50 | 34.50 | 127.908 | 401 | 2016 |
Kepler-603 d Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#1049of 1176
top 89.1%
This planet
1.32R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | Kepler-603 d | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.32 | 11.21 |
| Mass (M⊕) | 1.00 | 2.30 | 317.83 |
| Density (g/cm³) | 5.51 | 5.50 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.32 | 2.53 |
| Insolation (S⊕) | 1.00 | 497.40 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 270948636
Gaia DR2
Gaia DR2 2077556465126659456
Gaia DR3
Gaia DR3 2077556465126659456
System
Kepler-603
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 6.22 Earth days (1.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0712 AU.
Transit Fingerprint
Depth
0.021 %
Duration
3.701 h
Impact parameter b
0.940
Rp / R★
0.012285
Transit midpoint (BJD)
2,454,964.7216
Photometric dip
Transit produces a flux drop of 211 ppm lasting ≈ 3.70 h.
Extended Orbital Architecture
Planet / star radius ratio
0.012285
Semi-major axis / stellar radius
4.570
Impact parameter (b)
0.940
Transit mid-time (BJD)
2,454,964.7216
Angular separation (arcsec)
0.04620
Eq. Temperature
1,098K
(825 °C)
Insolation (S⊕)
497.40
Earth = 1.00
Earth Similarity (ESI)
0.280
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-603
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,808 K — hotter than the Sun (5,778 K)
Estimated Age
4.37 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.010 R☉
Stellar Mass
1.010 M☉
Metallicity [Fe/H]
0.03
Extended Stellar Properties
Surface gravity (log g)
4.430 dex
Stellar density
0.350 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
0.623 mas
Total Proper Motion
4.115 mas/yr
PM Right Ascension
-2.83 mas/yr
PM Declination
-2.99 mas/yr
Galactic Cartesian (pc)
x = 0.304 · y = -0.674 · z = 0.673
Equatorial (J2000)
RA 294.28097° · Dec 42.29093°
Galactic ℓ, b
75.485° · 10.164°
Ecliptic λ, β
310.910° · 62.324°
HTM-20 index
-809231594
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Kepler-1179 b
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