Key parameters at a glance

A radius of 15.48 Earth radii
A mass of 340.38 Earth masses
Surface gravity around 1.42 g
An orbital period of 3.548 days
Semi-major axis 0.0485 AU
Equilibrium temperature 1,648 K (1375 °C)
Distance from Earth 1,341.19 light-years
Earth Similarity Index 0.071
Travel time at Voyager 1 speed 23,651,873 years

HATS-3 b Planet Profile

Physical Specs

Radius

15.48 R⊕

Radius (Jupiter)

1.381 R♃

Mass

340.38 M⊕

Mass (Jupiter)

1.071 M♃

Density

0.51 g/cm³

Surface Gravity

1.42 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.071

HZ Position Inner

Controversial No

Discovery

Year 2013

Method Transit

Facility HATSouth

Telescope 0.18 m Takahashi Epsilon Astrograph

Size rank in cohort

Rank by radius

#199of 1771

top 11.2%

This planet

15.48R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

WASP-194 b 15.48 R⊕ HATS-52 b 15.49 R⊕ WASP-159 b 15.47 R⊕

Metric	Earth	HATS-3 b	Jupiter
Radius (R⊕)	1.00	15.48	11.21
Mass (M⊕)	1.00	340.38	317.83
Density (g/cm³)	5.51	0.51	1.33
Surface Gravity (g)	1.00	1.42	2.53
Insolation (S⊕)	1.00	1,212.00	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	340.382 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 336732616

Gaia DR2

Gaia DR2 6805886373600546176

Gaia DR3

Gaia DR3 6805886373600546176

System

HATS-3

Percentile among Gas Giant cohort

Radius 15.480 R⊕ · percentile 89 / cohort 1771

Mass 340.382 M⊕ · percentile 37 / cohort 1747

Orbital period 3.55 d · percentile 23 / cohort 1533

Distance 411.21 pc · percentile 70 / cohort 1759

ESI 0.071 · percentile 13 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3.548 days

Semi-major axis

0.0485 AU

Eccentricity

0.000

Inclination

86.20 °

Year Length

A year here lasts approximately 3.55 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0485 AU.

Transit Fingerprint

Depth

1.000 %

Duration

3.586 h

Impact parameter b

0.497

Rp / R★

0.101100

Transit midpoint (BJD)

2,456,155.9673

Photometric dip

Transit produces a flux drop of 10,000 ppm lasting ≈ 3.59 h.

Extended Orbital Architecture

Planet / star radius ratio

0.101100

Semi-major axis / stellar radius

7.420

Impact parameter (b)

0.497

RV semi-amplitude (K)

125.700 m/s

Transit mid-time (BJD)

2,456,155.9673

Long. of periastron (ω)

155.00°

Sky-projected obliquity (λ)

3.00°

Angular separation (arcsec)

0.11800

Eq. Temperature

1,648K

(1375 °C)

Insolation (S⊕)

1,212.00

Earth = 1.00

Earth Similarity (ESI)

0.071

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

Bayliss et al. 2013

Instrument

Apogee 4K CCD Sensor

Publication

2013-11

Observation locale

Ground

Host System: HATS-3

Spectral Class

F-type yellow-white

Effective Temperature

6,351 K — hotter than the Sun (5,778 K)

Estimated Age

3.20 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.404 R☉

Stellar Mass

1.209 M☉

Metallicity [Fe/H]

-0.16

Extended Stellar Properties

Surface gravity (log g)

4.220 dex

Stellar density

0.620 g/cm³

Rotational v·sin i

9.12 km/s

Metallicity ratio

[Fe/H]

Distance

411.21 parsec

Light-years 1,341.19 ly

V-band magnitude

12.43 mag

Voyager-speed travel 23,651,873 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

2.404 mas

Total Proper Motion

18.780 mas/yr

PM Right Ascension

10.43 mas/yr

PM Declination

15.62 mas/yr

Galactic Cartesian (pc)

x = 0.615 · y = -0.672 · z = -0.414

Equatorial (J2000)

RA 312.45749° · Dec -24.42869°

Galactic ℓ, b

21.297° · -36.072°

Ecliptic λ, β

308.204° · -6.444°

HTM-20 index

916266568