Key parameters at a glance

A radius of 10.86 Earth radii
A mass of 167.18 Earth masses
Surface gravity around 1.42 g
An orbital period of 3.313 days
Semi-major axis 0.0449 AU
Equilibrium temperature 1,407 K (1134 °C)
Distance from Earth 1,744.57 light-years
Earth Similarity Index 0.099
Travel time at Voyager 1 speed 30,765,536 years

HATS-10 b Planet Profile

Physical Specs

Radius

10.86 R⊕

Radius (Jupiter)

0.969 R♃

Mass

167.18 M⊕

Mass (Jupiter)

0.526 M♃

Density

0.70 g/cm³

Surface Gravity

1.42 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.099

HZ Position Inner

Controversial No

Discovery

Year 2015

Method Transit

Facility HATSouth

Telescope 0.18 m Takahashi Epsilon Astrograph

Size rank in cohort

Rank by radius

#1682of 1771

top 94.9%

This planet

10.86R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

CoRoT-10 b 10.87 R⊕ TOI-3837 b 10.87 R⊕ TOI-2368 b 10.84 R⊕

Metric	Earth	HATS-10 b	Jupiter
Radius (R⊕)	1.00	10.86	11.21
Mass (M⊕)	1.00	167.18	317.83
Density (g/cm³)	5.51	0.70	1.33
Surface Gravity (g)	1.00	1.42	2.53
Insolation (S⊕)	1.00	836.86	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	167.179 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 126325985

Gaia DR2

Gaia DR2 6771939433131924096

Gaia DR3

Gaia DR3 6771939433131924096

System

HATS-10

Percentile among Gas Giant cohort

Radius 10.862 R⊕ · percentile 5 / cohort 1771

Mass 167.179 M⊕ · percentile 14 / cohort 1747

Orbital period 3.31 d · percentile 20 / cohort 1533

Distance 534.89 pc · percentile 76 / cohort 1759

ESI 0.099 · percentile 26 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.313 days

Semi-major axis

0.0449 AU

Eccentricity

0.501

Inclination

87.79 °

Year Length

A year here lasts approximately 3.31 Earth days (0.9% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.0449 AU.

Transit Fingerprint

Depth

0.947 %

Duration

3.007 h

Impact parameter b

0.340

Rp / R★

0.090300

Transit midpoint (BJD)

2,456,457.8819

Photometric dip

Transit produces a flux drop of 9,473 ppm lasting ≈ 3.01 h.

Extended Orbital Architecture

Planet / star radius ratio

0.090300

Semi-major axis / stellar radius

8.730

Impact parameter (b)

0.340

RV semi-amplitude (K)

67.000 m/s

Transit mid-time (BJD)

2,456,457.8819

Angular separation (arcsec)

0.08400

Eq. Temperature

1,407K

(1134 °C)

Insolation (S⊕)

836.86

Earth = 1.00

Earth Similarity (ESI)

0.099

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

Brahm et al. 2015

Instrument

Apogee 4K CCD Sensor

Publication

2015-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2015 at HATSouth (6 shown).

HATS-6 b · Gas Giant HATS-7 b · Neptune-like HATS-14 b · Gas Giant HATS-13 b · Gas Giant HATS-8 b · Neptune-like HATS-9 b · Gas Giant

Host System: HATS-10

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,880 K — hotter than the Sun (5,778 K)

Estimated Age

3.30 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.105 R☉

Stellar Mass

1.101 M☉

Metallicity [Fe/H]

0.15

Extended Stellar Properties

Surface gravity (log g)

4.392 dex

Stellar density

1.150 g/cm³

Systemic radial velocity

-28.09 km/s

Rotational v·sin i

5.68 km/s

Metallicity ratio

[Fe/H]

Distance

534.89 parsec

Light-years 1,744.57 ly

V-band magnitude

13.20 mag

Voyager-speed travel 30,765,536 yr

Multi-band Host Photometry — 14 bands

Astrometric Data

Parallax

1.841 mas

Total Proper Motion

5.887 mas/yr

PM Right Ascension

5.35 mas/yr

PM Declination

-2.45 mas/yr

Galactic Cartesian (pc)

x = 0.381 · y = -0.844 · z = -0.378

Equatorial (J2000)

RA 294.30684° · Dec -22.20449°

Galactic ℓ, b

17.379° · -19.625°

Ecliptic λ, β

292.399° · -0.636°

HTM-20 index

-245575420