Key parameters at a glance
- A radius of 14.12 Earth radii
- A mass of 194.83 Earth masses
- Surface gravity around 0.98 g
- An orbital period of 4.299 days
- Semi-major axis 0.0516 AU
- Equilibrium temperature 1,277 K (1004 °C)
- Distance from Earth 1,536.71 light-years
- Earth Similarity Index 0.093
- Travel time at Voyager 1 speed 27,099,881 years
HATS-25 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#367of 1771
top 20.7%
This planet
14.12R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HATS-25 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 14.12 | 11.21 |
| Mass (M⊕) | 1.00 | 194.83 | 317.83 |
| Density (g/cm³) | 5.51 | 0.38 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.98 | 2.53 |
| Insolation (S⊕) | 1.00 | 454.87 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 194.830 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 437333618
Gaia DR2
Gaia DR2 6287125101007614080
Gaia DR3
Gaia DR3 6287125101007614080
System
HATS-25
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 4.30 Earth days (1.2% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0516 AU.
Transit Fingerprint
Depth
1.528 %
Duration
3.204 h
Impact parameter b
0.538
Rp / R★
0.117100
Transit midpoint (BJD)
2,456,870.3687
Photometric dip
Transit produces a flux drop of 15,276 ppm lasting ≈ 3.20 h.
Extended Orbital Architecture
Planet / star radius ratio
0.117100
Semi-major axis / stellar radius
10.030
Impact parameter (b)
0.538
RV semi-amplitude (K)
76.800 m/s
Transit mid-time (BJD)
2,456,870.3687
Angular separation (arcsec)
0.11000
Eq. Temperature
1,277K
(1004 °C)
Insolation (S⊕)
454.87
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
Espinoza et al. 2016Instrument
Apogee 4K CCD Sensor
Publication
2016-10
Observation locale
Ground
Discovery cohort
Planets confirmed in 2016 at HATSouth (12 shown).
Host System: HATS-25
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,715 K — cooler than the Sun (5,778 K)
Estimated Age
7.50 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.107 R☉
Stellar Mass
0.994 M☉
Metallicity [Fe/H]
0.02
Extended Stellar Properties
Surface gravity (log g)
4.347 dex
Stellar density
1.030 g/cm³
Systemic radial velocity
31.66 km/s
Rotational v·sin i
3.88 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
2.095 mas
Total Proper Motion
23.724 mas/yr
PM Right Ascension
-19.48 mas/yr
PM Declination
-13.54 mas/yr
Galactic Cartesian (pc)
x = -0.809 · y = -0.428 · z = -0.403
Equatorial (J2000)
RA 207.90767° · Dec -23.78124°
Galactic ℓ, b
320.252° · 37.058°
Ecliptic λ, β
214.380° · -11.514°
HTM-20 index
259805177
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