Key parameters at a glance
- A radius of 19.62 Earth radii
- A mass of 206.59 Earth masses
- Surface gravity around 0.54 g
- An orbital period of 3.302 days
- Semi-major axis 0.0474 AU
- Equilibrium temperature 1,918 K (1645 °C)
- Distance from Earth 2,810.95 light-years
- Earth Similarity Index 0.044
- Travel time at Voyager 1 speed 49,571,147 years
HATS-26 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#35of 1771
top 1.9%
This planet
19.62R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | HATS-26 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 19.62 | 11.21 |
| Mass (M⊕) | 1.00 | 206.59 | 317.83 |
| Density (g/cm³) | 5.51 | 0.15 | 1.33 |
| Surface Gravity (g) | 1.00 | 0.54 | 2.53 |
| Insolation (S⊕) | 1.00 | 2,236.57 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 206.590 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 315002523
Gaia DR2
Gaia DR2 5656896924435896832
Gaia DR3
Gaia DR3 5656896924435896832
System
HATS-26
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.30 Earth days (0.9% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0474 AU.
Transit Fingerprint
Depth
0.803 %
Duration
5.215 h
Impact parameter b
0.330
Rp / R★
0.087900
Transit midpoint (BJD)
2,456,867.4232
Photometric dip
Transit produces a flux drop of 8,028 ppm lasting ≈ 5.22 h.
Extended Orbital Architecture
Planet / star radius ratio
0.087900
Semi-major axis / stellar radius
5.010
Impact parameter (b)
0.330
RV semi-amplitude (K)
73.300 m/s
Transit mid-time (BJD)
2,456,867.4232
Angular separation (arcsec)
0.05490
Eq. Temperature
1,918K
(1645 °C)
Insolation (S⊕)
2,236.57
Earth = 1.00
Earth Similarity (ESI)
0.044
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-26
Spectral Class
F-type yellow-white
Effective Temperature
6,071 K — hotter than the Sun (5,778 K)
Estimated Age
4.04 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
2.040 R☉
Stellar Mass
1.299 M☉
Metallicity [Fe/H]
-0.02
Extended Stellar Properties
Surface gravity (log g)
3.936 dex
Stellar density
0.218 g/cm³
Systemic radial velocity
-12.52 km/s
Rotational v·sin i
7.48 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 14 bands
Astrometric Data
Parallax
1.132 mas
Total Proper Motion
4.650 mas/yr
PM Right Ascension
-2.21 mas/yr
PM Declination
-4.09 mas/yr
Galactic Cartesian (pc)
x = -0.719 · y = 0.505 · z = -0.478
Equatorial (J2000)
RA 144.92686° · Dec -28.58560°
Galactic ℓ, b
259.729° · 17.784°
Ecliptic λ, β
159.222° · -39.769°
HTM-20 index
-1474875919
Similar Worlds
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Gas Giant · F-type yellow-white
Radius 19.53 R⊕ · 880.3 ly
KELT-15 b
Gas Giant · F-type yellow-white
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KELT-12 b
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Radius 19.95 R⊕ · 1,200.4 ly
TOI-640 b
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HAT-P-64 b
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Qatar-7 b
Gas Giant · F-type yellow-white
Radius 19.06 R⊕ · 2,302.6 ly