Key parameters at a glance
- A radius of 3.38 Earth radii
- A mass of 11.40 Earth masses
- Surface gravity around 1.00 g
- An orbital period of 28.511 days
- Semi-major axis 0.1670 AU
- Equilibrium temperature 423 K (150 °C)
- Distance from Earth 988.11 light-years
- Earth Similarity Index 0.508
- Travel time at Voyager 1 speed 17,425,247 years
- Almost certainly tidally locked to its host star given the close orbit
Context from the literature
The list of exoplanets detected by the Kepler space telescope contains bodies with a wide variety of properties, with significant ranges in orbital distances, masses, radii, composition, habitability, and host star type. As of June 16 2023, the Kepler space telescope and its follow-up observations have detected 2,778 planets, including hot Jupiters, super-Earths, circumbinary planets, and planets located in the circumstellar habitable zones of their host stars. Kepler has detected over 3,601 unconfirmed planet candidates and 2,165 eclipsing binary stars.
Excerpted from Wikipedia · full article
Kepler-533 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#230of 1978
top 11.6%
This planet
3.38R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-533 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.38 | 11.21 |
| Mass (M⊕) | 1.00 | 11.40 | 317.83 |
| Density (g/cm³) | 5.51 | 1.62 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.00 | 2.53 |
| Insolation (S⊕) | 1.00 | 8.77 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 26962715
Gaia DR2
Gaia DR2 2128970419109836160
Gaia DR3
Gaia DR3 2128970419109836160
System
Kepler-533
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 28.51 Earth days (7.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1670 AU.
Transit Fingerprint
Depth
0.190 %
Duration
4.578 h
Impact parameter b
0.650
Rp / R★
0.043176
Transit midpoint (BJD)
2,455,020.3635
Photometric dip
Transit produces a flux drop of 1,897 ppm lasting ≈ 4.58 h.
Extended Orbital Architecture
Planet / star radius ratio
0.043176
Semi-major axis / stellar radius
40.000
Impact parameter (b)
0.650
Transit mid-time (BJD)
2,455,020.3635
Angular separation (arcsec)
0.55100
Eq. Temperature
423K
(150 °C)
Insolation (S⊕)
8.77
Earth = 1.00
Earth Similarity (ESI)
0.508
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.
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-533
Spectral Class
K-type orange
Effective Temperature
4,758 K — cooler than the Sun (5,778 K)
Estimated Age
3.24 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.720 R☉
Stellar Mass
0.780 M☉
Metallicity [Fe/H]
0.01
Extended Stellar Properties
Surface gravity (log g)
4.610 dex
Stellar density
2.090 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.272 mas
Total Proper Motion
31.000 mas/yr
PM Right Ascension
-7.30 mas/yr
PM Declination
-30.13 mas/yr
Galactic Cartesian (pc)
x = 0.264 · y = -0.603 · z = 0.753
Equatorial (J2000)
RA 293.68569° · Dec 48.82499°
Galactic ℓ, b
81.252° · 13.483°
Ecliptic λ, β
316.182° · 68.499°
HTM-20 index
-794658032
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