Key parameters at a glance
- A radius of 16.82 Earth radii
- A mass of 260.94 Earth masses
- Surface gravity around 0.92 g
- An orbital period of 3.105 days
- Semi-major axis 0.0450 AU
- Equilibrium temperature 1,634 K (1361 °C)
- Distance from Earth 1,608.99 light-years
- Earth Similarity Index 0.063
- Travel time at Voyager 1 speed 28,374,586 years
HATS-65 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#115of 1771
top 6.4%
This planet
16.82R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HATS-65 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 16.82 | 11.21 |
| Mass (M⊕) | 1.00 | 260.94 | 317.83 |
| Density (g/cm³) | 5.51 | 0.30 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.92 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,178.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 260.938 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 169504920
Gaia DR2
Gaia DR2 6766134630213144704
Gaia DR3
Gaia DR3 6766134630213144704
System
HATS-65
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.11 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0450 AU.
Transit Fingerprint
Depth
1.304 %
Duration
2.885 h
Impact parameter b
0.667
Rp / R★
0.118100
Transit midpoint (BJD)
2,457,520.9613
Photometric dip
Transit produces a flux drop of 13,036 ppm lasting ≈ 2.88 h.
Extended Orbital Architecture
Planet / star radius ratio
0.118100
Semi-major axis / stellar radius
7.380
Impact parameter (b)
0.667
RV semi-amplitude (K)
97.700 m/s
Transit mid-time (BJD)
2,457,520.9613
Angular separation (arcsec)
0.09120
Eq. Temperature
1,634K
(1361 °C)
Insolation (S⊕)
1,178.00
Earth = 1.00
Earth Similarity (ESI)
0.063
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. 2019Instrument
Apogee 4K CCD Sensor
Publication
2019-02
Observation locale
Ground
Discovery cohort
Planets confirmed in 2018 at HATSouth (12 shown).
Host System: HATS-65
Spectral Class
F-type yellow-white
Effective Temperature
6,277 K — hotter than the Sun (5,778 K)
Estimated Age
1.78 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.310 R☉
Stellar Mass
1.257 M☉
Metallicity [Fe/H]
0.20
Extended Stellar Properties
Surface gravity (log g)
4.303 dex
Stellar density
0.788 g/cm³
Systemic radial velocity
-12.32 km/s
Rotational v·sin i
7.83 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
2.000 mas
Total Proper Motion
3.498 mas/yr
PM Right Ascension
-3.49 mas/yr
PM Declination
-0.16 mas/yr
Galactic Cartesian (pc)
x = 0.348 · y = -0.822 · z = -0.450
Equatorial (J2000)
RA 292.93978° · Dec -26.74020°
Galactic ℓ, b
12.408° · -20.138°
Ecliptic λ, β
290.445° · -4.915°
HTM-20 index
-646542663
Similar Worlds
HATS-27 b
Gas Giant · F-type yellow-white
Radius 16.81 R⊕ · 2,664.7 ly
WASP-168 b
Gas Giant · F-type yellow-white
Radius 16.81 R⊕ · 991.3 ly
TOI-4329 b
Gas Giant · F-type yellow-white
Radius 16.81 R⊕ · 2,339.0 ly
WASP-136 b
Gas Giant · F-type yellow-white
Radius 16.81 R⊕ · 898.8 ly
WASP-176 b
Gas Giant · F-type yellow-white
Radius 16.87 R⊕ · 1,853.9 ly
HAT-P-56 b
Gas Giant · F-type yellow-white
Radius 16.93 R⊕ · 1,045.8 ly