Key parameters at a glance
- A radius of 3.46 Earth radii
- A mass of 11.80 Earth masses
- Surface gravity around 0.99 g
- An orbital period of 308.547 days
- Semi-major axis 0.9342 AU
- Equilibrium temperature 330 K (57 °C)
- Distance from Earth 3,153.28 light-years
- Earth Similarity Index 0.612
- Travel time at Voyager 1 speed 55,608,080 years
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-1533 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#193of 1978
top 9.7%
This planet
3.46R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | Kepler-1533 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 3.46 | 11.21 |
| Mass (M⊕) | 1.00 | 11.80 | 317.83 |
| Density (g/cm³) | 5.51 | 1.57 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.99 | 2.53 |
| Insolation (S⊕) | 1.00 | 4.79 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 271970605
Gaia DR2
Gaia DR2 2079749956462030720
Gaia DR3
Gaia DR3 2079749956462030720
System
Kepler-1533
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 308.55 Earth days (84.5% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.9342 AU.
Transit Fingerprint
Depth
0.059 %
Duration
18.464 h
Impact parameter b
0.022
Rp / R★
0.020857
Transit midpoint (BJD)
2,455,129.0682
Photometric dip
Transit produces a flux drop of 587 ppm lasting ≈ 18.46 h.
Extended Orbital Architecture
Planet / star radius ratio
0.020857
Semi-major axis / stellar radius
130.198
Impact parameter (b)
0.022
Transit mid-time (BJD)
2,455,129.0682
Angular separation (arcsec)
0.96600
Eq. Temperature
330K
(57 °C)
Insolation (S⊕)
4.79
Earth = 1.00
Earth Similarity (ESI)
0.612
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — liquid water is physically possible with adequate atmospheric pressure.
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-1533
Spectral Class
F-type yellow-white
Effective Temperature
6,431 K — hotter than the Sun (5,778 K)
Estimated Age
2.19 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.510 R☉
Stellar Mass
1.310 M☉
Metallicity [Fe/H]
0.03
Extended Stellar Properties
Surface gravity (log g)
4.200 dex
Stellar density
0.240 g/cm³
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
1.006 mas
Total Proper Motion
15.026 mas/yr
PM Right Ascension
-2.59 mas/yr
PM Declination
-14.80 mas/yr
Galactic Cartesian (pc)
x = 0.311 · y = -0.639 · z = 0.704
Equatorial (J2000)
RA 295.97556° · Dec 44.71337°
Galactic ℓ, b
78.245° · 10.212°
Ecliptic λ, β
315.458° · 64.109°
HTM-20 index
-1978022169
Similar Worlds
Kepler-596 b
Sub-Neptune · F-type yellow-white
Radius 3.46 R⊕ · 3,339.3 ly
Kepler-79 b
Sub-Neptune · F-type yellow-white
Radius 3.47 R⊕ · 3,329.1 ly
Kepler-79 e
Sub-Neptune · F-type yellow-white
Radius 3.49 R⊕ · 3,329.1 ly
Kepler-182 c
Sub-Neptune · F-type yellow-white
Radius 3.43 R⊕ · 5,052.4 ly
Kepler-116 b
Sub-Neptune · F-type yellow-white
Radius 3.42 R⊕ · 3,115.3 ly
Kepler-1773 b
Sub-Neptune · F-type yellow-white
Radius 3.50 R⊕ · 2,222.0 ly