Key parameters at a glance
- A radius of 13.53 Earth radii
- A mass of 305.12 Earth masses
- Surface gravity around 1.67 g
- An orbital period of 3.057 days
- Semi-major axis 0.0403 AU
- Equilibrium temperature 1,398 K (1125 °C)
- Distance from Earth 2,032.71 light-years
- Earth Similarity Index 0.093
- Travel time at Voyager 1 speed 35,846,813 years
HATS-63 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#668of 1771
top 37.7%
This planet
13.53R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HATS-63 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.53 | 11.21 |
| Mass (M⊕) | 1.00 | 305.12 | 317.83 |
| Density (g/cm³) | 5.51 | 0.67 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.67 | 2.53 |
| Insolation (S⊕) | 1.00 | 634.10 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 305.117 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 178879588
Gaia DR2
Gaia DR2 4891362198412001408
Gaia DR3
Gaia DR3 4891362198412001408
System
HATS-63
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.06 Earth days (0.8% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0403 AU.
Transit Fingerprint
Depth
1.252 %
Duration
2.448 h
Impact parameter b
0.724
Rp / R★
0.115900
Transit midpoint (BJD)
2,457,659.9376
Photometric dip
Transit produces a flux drop of 12,518 ppm lasting ≈ 2.45 h.
Extended Orbital Architecture
Planet / star radius ratio
0.115900
Semi-major axis / stellar radius
8.090
Impact parameter (b)
0.724
RV semi-amplitude (K)
140.000 m/s
Transit mid-time (BJD)
2,457,659.9376
Angular separation (arcsec)
0.06460
Eq. Temperature
1,398K
(1125 °C)
Insolation (S⊕)
634.10
Earth = 1.00
Earth Similarity (ESI)
0.093
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-63
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,627 K — cooler than the Sun (5,778 K)
Estimated Age
10.30 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.070 R☉
Stellar Mass
0.931 M☉
Metallicity [Fe/H]
0.08
Extended Stellar Properties
Surface gravity (log g)
4.349 dex
Stellar density
1.071 g/cm³
Systemic radial velocity
-4.17 km/s
Rotational v·sin i
1.77 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
1.576 mas
Total Proper Motion
17.775 mas/yr
PM Right Ascension
5.78 mas/yr
PM Declination
16.81 mas/yr
Galactic Cartesian (pc)
x = 0.338 · y = 0.814 · z = -0.473
Equatorial (J2000)
RA 67.41858° · Dec -28.19721°
Galactic ℓ, b
227.567° · -42.089°
Ecliptic λ, β
58.789° · -49.219°
HTM-20 index
1693077318
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