Key parameters at a glance
- A radius of 13.81 Earth radii
- A mass of 410.00 Earth masses
- Surface gravity around 2.15 g
- An orbital period of 3.586 days
- Semi-major axis 0.0507 AU
- Equilibrium temperature 1,741 K (1468 °C)
- Distance from Earth 1,969.84 light-years
- Earth Similarity Index 0.074
- Travel time at Voyager 1 speed 34,738,047 years
HATS-68 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#508of 1771
top 28.6%
This planet
13.81R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HATS-68 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.81 | 11.21 |
| Mass (M⊕) | 1.00 | 410.00 | 317.83 |
| Density (g/cm³) | 5.51 | 0.86 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.15 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,521.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 410.001 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 322307342
Gaia DR2
Gaia DR2 4904279261014267648
Gaia DR3
Gaia DR3 4904279261014267648
System
HATS-68
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.59 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0507 AU.
Transit Fingerprint
Depth
0.573 %
Duration
3.420 h
Impact parameter b
0.736
Rp / R★
0.072500
Transit midpoint (BJD)
2,457,410.4086
Photometric dip
Transit produces a flux drop of 5,729 ppm lasting ≈ 3.42 h.
Extended Orbital Architecture
Planet / star radius ratio
0.072500
Semi-major axis / stellar radius
6.232
Impact parameter (b)
0.736
RV semi-amplitude (K)
139.300 m/s
Transit mid-time (BJD)
2,457,410.4086
Angular separation (arcsec)
0.08400
Eq. Temperature
1,741K
(1468 °C)
Insolation (S⊕)
1,521.00
Earth = 1.00
Earth Similarity (ESI)
0.074
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-68
Spectral Class
F-type yellow-white
Effective Temperature
6,147 K — hotter than the Sun (5,778 K)
Estimated Age
3.02 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.748 R☉
Stellar Mass
1.351 M☉
Metallicity [Fe/H]
0.21
Extended Stellar Properties
Surface gravity (log g)
4.083 dex
Stellar density
0.356 g/cm³
Systemic radial velocity
11.89 km/s
Rotational v·sin i
7.42 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
1.627 mas
Total Proper Motion
23.768 mas/yr
PM Right Ascension
22.52 mas/yr
PM Declination
7.59 mas/yr
Galactic Cartesian (pc)
x = 0.499 · y = 0.134 · z = -0.856
Equatorial (J2000)
RA 15.00608° · Dec -58.90472°
Galactic ℓ, b
300.829° · -58.188°
Ecliptic λ, β
336.397° · -57.018°
HTM-20 index
1429809352
Similar Worlds
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HD 60532 b
Gas Giant · F-type yellow-white
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KOI-12 b
Gas Giant · F-type yellow-white
Radius 13.79 R⊕ · 1,302.7 ly
WASP-38 b
Gas Giant · F-type yellow-white
Radius 13.79 R⊕ · 444.4 ly
TOI-3160 A b
Gas Giant · F-type yellow-white
Radius 13.76 R⊕ · 1,851.5 ly
TOI-3464 b
Gas Giant · F-type yellow-white
Radius 13.76 R⊕ · 1,949.7 ly