Key parameters at a glance
- A radius of 14.44 Earth radii
- A mass of 429.07 Earth masses
- Surface gravity around 2.06 g
- An orbital period of 3.122 days
- Semi-major axis 0.0453 AU
- Equilibrium temperature 1,862 K (1589 °C)
- Distance from Earth 1,681.20 light-years
- Earth Similarity Index 0.067
- Travel time at Voyager 1 speed 29,647,911 years
HAT-P-50 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#287of 1771
top 16.1%
This planet
14.44R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HAT-P-50 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.44 | 11.21 |
| Mass (M⊕) | 1.00 | 429.07 | 317.83 |
| Density (g/cm³) | 5.51 | 0.78 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.06 | 2.53 |
| Insolation (S⊕) | 1.00 | 2,108.44 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 429.071 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 17746821
Gaia DR2
Gaia DR2 3151961363348862720
Gaia DR3
Gaia DR3 3151961363348862720
System
HAT-P-50
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.12 Earth days (0.9% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0453 AU.
Transit Fingerprint
Depth
0.630 %
Duration
3.674 h
Impact parameter b
0.629
Rp / R★
0.078200
Transit midpoint (BJD)
2,456,285.9099
Photometric dip
Transit produces a flux drop of 6,305 ppm lasting ≈ 3.67 h.
Extended Orbital Architecture
Planet / star radius ratio
0.078200
Semi-major axis / stellar radius
5.680
Impact parameter (b)
0.629
RV semi-amplitude (K)
161.300 m/s
Transit mid-time (BJD)
2,456,285.9099
Angular separation (arcsec)
0.08790
Eq. Temperature
1,862K
(1589 °C)
Insolation (S⊕)
2,108.44
Earth = 1.00
Earth Similarity (ESI)
0.067
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. 2015Instrument
Multiple Instruments
Publication
2015-12
Observation locale
Ground
Discovery cohort
Planets confirmed in 2015 at HATNet (7 shown).
Host System: HAT-P-50
Spectral Class
F-type yellow-white
Effective Temperature
6,280 K — hotter than the Sun (5,778 K)
Estimated Age
3.37 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.698 R☉
Stellar Mass
1.273 M☉
Metallicity [Fe/H]
-0.18
Extended Stellar Properties
Surface gravity (log g)
4.072 dex
Stellar density
0.357 g/cm³
Systemic radial velocity
6.25 km/s
Rotational v·sin i
8.90 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
1.913 mas
Total Proper Motion
13.871 mas/yr
PM Right Ascension
6.74 mas/yr
PM Declination
-12.13 mas/yr
Galactic Cartesian (pc)
x = -0.460 · y = 0.863 · z = 0.210
Equatorial (J2000)
RA 118.06344° · Dec 12.13935°
Galactic ℓ, b
208.674° · 18.910°
Ecliptic λ, β
117.720° · -8.640°
HTM-20 index
-1845061830
Similar Worlds
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HATS-45 b
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