Key parameters at a glance
- A radius of 13.39 Earth radii
- A mass of 1,080.62 Earth masses
- Surface gravity around 6.02 g
- An orbital period of 7.818 days
- Semi-major axis 0.0791 AU
- Equilibrium temperature 1,226 K (953 °C)
- Distance from Earth 2,217.08 light-years
- Earth Similarity Index 0.130
- Travel time at Voyager 1 speed 39,098,226 years
HATS-61 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#782of 1771
top 44.1%
This planet
13.39R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HATS-61 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.39 | 11.21 |
| Mass (M⊕) | 1.00 | 1,080.62 | 317.83 |
| Density (g/cm³) | 5.51 | 2.47 | 1.33 |
| Surface Gravity (g) | 1.00 | 6.02 | 2.53 |
| Insolation (S⊕) | 1.00 | 374.20 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 1,080.622 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 44745133
Gaia DR2
Gaia DR2 4890849134501995392
Gaia DR3
Gaia DR3 4890849134501995392
System
HATS-61
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 7.82 Earth days (2.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0791 AU.
Transit Fingerprint
Depth
0.365 %
Duration
5.530 h
Impact parameter b
0.508
Rp / R★
0.073800
Transit midpoint (BJD)
2,457,673.0611
Photometric dip
Transit produces a flux drop of 3,650 ppm lasting ≈ 5.53 h.
Extended Orbital Architecture
Planet / star radius ratio
0.073800
Semi-major axis / stellar radius
10.230
Impact parameter (b)
0.508
RV semi-amplitude (K)
330.000 m/s
Transit mid-time (BJD)
2,457,673.0611
Angular separation (arcsec)
0.11600
Eq. Temperature
1,226K
(953 °C)
Insolation (S⊕)
374.20
Earth = 1.00
Earth Similarity (ESI)
0.130
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-61
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,542 K — cooler than the Sun (5,778 K)
Estimated Age
8.90 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.664 R☉
Stellar Mass
1.076 M☉
Metallicity [Fe/H]
0.25
Extended Stellar Properties
Surface gravity (log g)
4.028 dex
Stellar density
0.330 g/cm³
Systemic radial velocity
54.08 km/s
Rotational v·sin i
3.52 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
1.442 mas
Total Proper Motion
10.669 mas/yr
PM Right Ascension
4.00 mas/yr
PM Declination
9.89 mas/yr
Galactic Cartesian (pc)
x = 0.429 · y = 0.795 · z = -0.428
Equatorial (J2000)
RA 61.65780° · Dec -25.34967°
Galactic ℓ, b
222.089° · -46.471°
Ecliptic λ, β
52.512° · -45.170°
HTM-20 index
1022021174
Similar Worlds
HD 159243 c
Gas Giant · G-type yellow (Sun-like)
Radius 13.40 R⊕ · 239.1 ly
HD 12648 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.40 R⊕ · 594.2 ly
HD 65216 c
Gas Giant · G-type yellow (Sun-like)
Radius 13.40 R⊕ · 114.5 ly
TOI-2981 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.40 R⊕ · 1,721.4 ly
HD 4313 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.40 R⊕ · 444.6 ly
HD 68988 b
Gas Giant · G-type yellow (Sun-like)
Radius 13.40 R⊕ · 198.4 ly