Key parameters at a glance
- A radius of 14.31 Earth radii
- A mass of 587.41 Earth masses
- Surface gravity around 2.87 g
- An orbital period of 1.327 days
- Semi-major axis 0.0241 AU
- Equilibrium temperature 1,781 K (1508 °C)
- Distance from Earth 960.27 light-years
- Earth Similarity Index 0.076
- Travel time at Voyager 1 speed 16,934,276 years
HAT-P-36 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#300of 1771
top 16.9%
This planet
14.31R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HAT-P-36 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.31 | 11.21 |
| Mass (M⊕) | 1.00 | 587.41 | 317.83 |
| Density (g/cm³) | 5.51 | 1.18 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.87 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,821.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 587.413 M⊕ | Direct mass measurement (not derived). |
| Minimum mass (M sin i) | 609.916 M⊕ | Lower bound from radial-velocity fitting. |
| Computed mass | 612.071 M⊕ | Model-computed mass (e.g. from mass-radius relation). |
Star Catalogue Identifiers
TIC
TIC 373693175
Gaia DR2
Gaia DR2 1541532207133249920
Gaia DR3
Gaia DR3 1541532207133249920
System
HAT-P-36
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 1.33 Earth days (0.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0241 AU.
Transit Fingerprint
Depth
1.885 %
Duration
2.232 h
Impact parameter b
0.250
Rp / R★
0.119900
Transit midpoint (BJD)
2,457,885.3840
Photometric dip
Transit produces a flux drop of 18,850 ppm lasting ≈ 2.23 h.
Extended Orbital Architecture
Planet / star radius ratio
0.119900
Semi-major axis / stellar radius
4.950
Impact parameter (b)
0.250
RV semi-amplitude (K)
334.700 m/s
Transit mid-time (BJD)
2,457,885.3840
Long. of periastron (ω)
51.00°
Sky-projected obliquity (λ)
-14.00°
True obliquity (ψ)
63.00°
Angular separation (arcsec)
0.08190
Eq. Temperature
1,781K
(1508 °C)
Insolation (S⊕)
1,821.00
Earth = 1.00
Earth Similarity (ESI)
0.076
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
Bakos et al. 2012Instrument
2K CCD Sensor
Publication
2012-07
Observation locale
Ground
Discovery cohort
Planets confirmed in 2011 at HATNet (10 shown).
Host System: HAT-P-36
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,620 K — cooler than the Sun (5,778 K)
Estimated Age
6.60 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.041 R☉
Stellar Mass
1.030 M☉
Metallicity [Fe/H]
0.25
Extended Stellar Properties
Surface gravity (log g)
4.416 dex
Stellar density
1.089 g/cm³
Systemic radial velocity
-16.29 km/s
Rotational v·sin i
3.58 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 16 bands
Astrometric Data
Parallax
3.368 mas
Total Proper Motion
14.161 mas/yr
PM Right Ascension
-11.64 mas/yr
PM Declination
8.06 mas/yr
Galactic Cartesian (pc)
x = -0.701 · y = -0.102 · z = 0.706
Equatorial (J2000)
RA 188.26620° · Dec 44.91537°
Galactic ℓ, b
133.414° · 71.837°
Ecliptic λ, β
165.022° · 43.496°
HTM-20 index
-1601948942
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