Key parameters at a glance
- A radius of 22.19 Earth radii
- A mass of 216.12 Earth masses
- Surface gravity around 0.44 g
- An orbital period of 2.150 days
- Semi-major axis 0.0340 AU
- Equilibrium temperature 1,836 K (1563 °C)
- Distance from Earth 943.26 light-years
- Earth Similarity Index 0.042
- Travel time at Voyager 1 speed 16,634,380 years
HAT-P-32 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#14of 1771
top 0.7%
This planet
22.19R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HAT-P-32 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 22.19 | 11.21 |
| Mass (M⊕) | 1.00 | 216.12 | 317.83 |
| Density (g/cm³) | 5.51 | 0.11 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.44 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,841.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 216.124 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 216.124 M⊕ | Lower bound from radial-velocity fitting. |
| Computed mass | 216.159 M⊕ | Model-computed mass (e.g. from mass-radius relation). |
Star Catalogue Identifiers
TIC
TIC 292152376
Gaia DR2
Gaia DR2 356348286886230272
Gaia DR3
Gaia DR3 356348286886230272
System
HAT-P-32
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.15 Earth days (0.6% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0340 AU.
Transit Fingerprint
Depth
2.216 %
Duration
3.120 h
Impact parameter b
0.083
Rp / R★
0.148860
Transit midpoint (BJD)
2,455,867.4027
Photometric dip
Transit produces a flux drop of 22,160 ppm lasting ≈ 3.12 h.
Extended Orbital Architecture
Planet / star radius ratio
0.148860
Semi-major axis / stellar radius
5.344
Impact parameter (b)
0.083
RV semi-amplitude (K)
99.000 m/s
Transit mid-time (BJD)
2,455,867.4027
Long. of periastron (ω)
50.00°
Sky-projected obliquity (λ)
85.00°
Angular separation (arcsec)
0.11700
Eq. Temperature
1,836K
(1563 °C)
Insolation (S⊕)
1,841.00
Earth = 1.00
Earth Similarity (ESI)
0.042
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
Hartman et al. 2011Instrument
2K CCD Sensor
Publication
2011-11
Observation locale
Ground
Discovery cohort
Planets confirmed in 2011 at HATNet (10 shown).
Host System: HAT-P-32
Spectral Class
F-type yellow-white
Effective Temperature
6,001 K — hotter than the Sun (5,778 K)
Estimated Age
2.70 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.367 R☉
Stellar Mass
1.132 M☉
Metallicity [Fe/H]
-0.16
Extended Stellar Properties
Surface gravity (log g)
4.220 dex
Stellar density
0.625 g/cm³
Systemic radial velocity
-23.21 km/s
Rotational v·sin i
20.70 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
3.430 mas
Total Proper Motion
10.422 mas/yr
PM Right Ascension
-9.82 mas/yr
PM Declination
3.48 mas/yr
Galactic Cartesian (pc)
x = 0.588 · y = 0.354 · z = 0.728
Equatorial (J2000)
RA 31.04276° · Dec 46.68785°
Galactic ℓ, b
135.699° · -14.373°
Ecliptic λ, β
46.248° · 31.795°
HTM-20 index
428425058
Observation Record
Transmission spectra
8
Emission spectra
7
Archive notes
2
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