Key parameters at a glance
- A radius of 10.59 Earth radii
- A mass of 183.39 Earth masses
- Surface gravity around 1.63 g
- An orbital period of 2.225 days
- Semi-major axis 0.0321 AU
- Equilibrium temperature 1,296 K (1023 °C)
- Distance from Earth 1,352.04 light-years
- Earth Similarity Index 0.098
- Travel time at Voyager 1 speed 23,843,176 years
- Almost certainly tidally locked to its host star given the close orbit
HATS-69 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1716of 1771
top 96.8%
This planet
10.59R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HATS-69 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 10.59 | 11.21 |
| Mass (M⊕) | 1.00 | 183.39 | 317.83 |
| Density (g/cm³) | 5.51 | 0.46 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.63 | 2.53 |
| Insolation (S⊕) | 1.00 | 466.60 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 183.388 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 467971286
Gaia DR2
Gaia DR2 6445881974332225536
Gaia DR3
Gaia DR3 6445881974332225536
System
HATS-69
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.23 Earth days (0.6% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0321 AU.
Transit Fingerprint
Depth
1.314 %
Duration
2.358 h
Impact parameter b
0.207
Rp / R★
0.110500
Transit midpoint (BJD)
2,457,755.3939
Photometric dip
Transit produces a flux drop of 13,145 ppm lasting ≈ 2.36 h.
Extended Orbital Architecture
Planet / star radius ratio
0.110500
Semi-major axis / stellar radius
7.859
Impact parameter (b)
0.207
RV semi-amplitude (K)
52.000 m/s
Transit mid-time (BJD)
2,457,755.3939
Angular separation (arcsec)
0.07750
Eq. Temperature
1,296K
(1023 °C)
Insolation (S⊕)
466.60
Earth = 1.00
Earth Similarity (ESI)
0.098
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched. Close-orbiting tidally-locked around a cool host.
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-69
Spectral Class
K-type orange
Effective Temperature
5,137 K — cooler than the Sun (5,778 K)
Estimated Age
8.00 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
0.879 R☉
Stellar Mass
0.892 M☉
Metallicity [Fe/H]
0.38
Extended Stellar Properties
Surface gravity (log g)
4.501 dex
Stellar density
1.854 g/cm³
Systemic radial velocity
4.09 km/s
Rotational v·sin i
2.55 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
2.384 mas
Total Proper Motion
19.890 mas/yr
PM Right Ascension
8.70 mas/yr
PM Declination
-17.89 mas/yr
Galactic Cartesian (pc)
x = 0.161 · y = -0.459 · z = -0.874
Equatorial (J2000)
RA 289.29743° · Dec -60.89176°
Galactic ℓ, b
335.641° · -26.547°
Ecliptic λ, β
281.807° · -38.241°
HTM-20 index
-640825053
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