Key parameters at a glance
- A radius of 13.79 Earth radii
- A mass of 378.85 Earth masses
- Surface gravity around 1.99 g
- An orbital period of 2.550 days
- Semi-major axis 0.0373 AU
- Equilibrium temperature 1,429 K (1156 °C)
- Distance from Earth 810.37 light-years
- Earth Similarity Index 0.093
- Travel time at Voyager 1 speed 14,290,825 years
HATS-33 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#540of 1771
top 30.4%
This planet
13.79R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HATS-33 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.79 | 11.21 |
| Mass (M⊕) | 1.00 | 378.85 | 317.83 |
| Density (g/cm³) | 5.51 | 0.79 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.99 | 2.53 |
| Insolation (S⊕) | 1.00 | 757.13 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 378.853 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 360742636
Gaia DR2
Gaia DR2 6640975950310072960
Gaia DR3
Gaia DR3 6640975950310072960
System
HATS-33
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.55 Earth days (0.7% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0373 AU.
Transit Fingerprint
Depth
1.492 %
Duration
2.676 h
Impact parameter b
0.330
Rp / R★
0.123700
Transit midpoint (BJD)
2,456,497.2318
Photometric dip
Transit produces a flux drop of 14,921 ppm lasting ≈ 2.68 h.
Extended Orbital Architecture
Planet / star radius ratio
0.123700
Semi-major axis / stellar radius
7.830
Impact parameter (b)
0.330
RV semi-amplitude (K)
170.100 m/s
Transit mid-time (BJD)
2,456,497.2318
Angular separation (arcsec)
0.15000
Eq. Temperature
1,429K
(1156 °C)
Insolation (S⊕)
757.13
Earth = 1.00
Earth Similarity (ESI)
0.093
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
De Val Borro et al. 2016Instrument
Apogee 4K CCD Sensor
Publication
2016-12
Observation locale
Ground
Discovery cohort
Planets confirmed in 2016 at HATSouth (12 shown).
Host System: HATS-33
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,659 K — cooler than the Sun (5,778 K)
Estimated Age
3.00 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.022 R☉
Stellar Mass
1.062 M☉
Metallicity [Fe/H]
0.29
Extended Stellar Properties
Surface gravity (log g)
4.445 dex
Stellar density
1.400 g/cm³
Systemic radial velocity
11.08 km/s
Rotational v·sin i
3.87 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
3.996 mas
Total Proper Motion
38.490 mas/yr
PM Right Ascension
5.38 mas/yr
PM Declination
-38.11 mas/yr
Galactic Cartesian (pc)
x = 0.237 · y = -0.517 · z = -0.822
Equatorial (J2000)
RA 294.63369° · Dec -55.33027°
Galactic ℓ, b
342.287° · -28.576°
Ecliptic λ, β
286.475° · -33.291°
HTM-20 index
-200671610
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Radius 13.79 R⊕ · 1,659.8 ly
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HD 102956 b
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