Confirmed Exoplanet Discovered 2018

HATS-62 b

A gas giant orbiting the g-type yellow (sun-like) HATS-62, located approximately 1,706.0 light-years from Earth.

Key parameters at a glance

  • A radius of 11.83 Earth radii
  • A mass of 56.89 Earth masses
  • Surface gravity around 0.41 g
  • An orbital period of 3.277 days
  • Semi-major axis 0.0416 AU
  • Equilibrium temperature 1,237 K (964 °C)
  • Distance from Earth 1,706.01 light-years
  • Earth Similarity Index 0.069
  • Travel time at Voyager 1 speed 30,085,562 years

HATS-62 b Planet Profile

Physical Specs

Radius
11.83 R⊕
Radius (Jupiter)
1.055 R♃
Mass
56.89 M⊕
Mass (Jupiter)
0.179 M♃
Density
0.08 g/cm³
Surface Gravity
0.41 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.069
HZ Position Inner
Controversial No

Discovery

Year 2018
Method Transit
Facility HATSouth
Telescope 0.18 m Takahashi Epsilon Astrograph

Size rank in cohort

Rank by radius

#1555of 1771

top 87.7%

This planet

11.83R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth HATS-62 b Jupiter
Radius (R⊕)1.0011.8311.21
Mass (M⊕)1.0056.89317.83
Density (g/cm³)5.510.081.33
Surface Gravity (g)1.000.412.53
Insolation (S⊕)1.00387.400.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 56.892 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 336732544

Gaia DR2

Gaia DR2 6806639397331208320

Gaia DR3

Gaia DR3 6806639397331208320

System

HATS-62

Percentile among Gas Giant cohort

Radius 11.826 R⊕ · percentile 12 / cohort 1771
Mass 56.892 M⊕ · percentile 0 / cohort 1747
Orbital period 3.28 d · percentile 20 / cohort 1533
Distance 523.07 pc · percentile 76 / cohort 1759
ESI 0.069 · percentile 13 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
3.277 days
Semi-major axis
0.0416 AU
Eccentricity
0.298
Inclination
87.92 °

Year Length

A year here lasts approximately 3.28 Earth days (0.9% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.0416 AU.

Transit Fingerprint

Depth

1.557 %

Duration

2.765 h

Impact parameter b

0.348

Rp / R★

0.115900

Transit midpoint (BJD)

2,455,808.0516

Photometric dip

Transit produces a flux drop of 15,566 ppm lasting ≈ 2.77 h.

Extended Orbital Architecture

Planet / star radius ratio

0.115900

Semi-major axis / stellar radius

9.590

Impact parameter (b)

0.348

RV semi-amplitude (K)

10.200 m/s

Transit mid-time (BJD)

2,455,808.0516

Angular separation (arcsec)

0.07960

Eq. Temperature

1,237K

(964 °C)

Insolation (S⊕)

387.40

Earth = 1.00

Earth Similarity (ESI)

0.069

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

Hartman et al. 2019

Instrument

Apogee 4K CCD Sensor

Publication

2019-02

Observation locale

Ground

Host System: HATS-62

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,416 K — cooler than the Sun (5,778 K)

Estimated Age

9.55 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

0.933 R☉

Stellar Mass

0.896 M☉

Metallicity [Fe/H]

0.13

Extended Stellar Properties

Surface gravity (log g)

4.451 dex

Stellar density

1.556 g/cm³

Systemic radial velocity

-10.49 km/s

Rotational v·sin i

0.50 km/s

Metallicity ratio

[Fe/H]

Distance
523.07 parsec
Light-years 1,706.01 ly
V-band magnitude
14.17 mag
Voyager-speed travel 30,085,562 yr

Multi-band Host Photometry — 14 bands

8.914.914.86B14.17V13.83Gaia13.31TESS14.42Sloan g13.78Sloan r13.59Sloan i12.57J12.20H12.11K12.10W112.15W212.55W38.89W4

Astrometric Data

Parallax

1.884 mas

Total Proper Motion

8.089 mas/yr

PM Right Ascension

0.49 mas/yr

PM Declination

-8.07 mas/yr

Galactic Cartesian (pc)

x = 0.615 · y = -0.672 · z = -0.412

Equatorial (J2000)

RA 312.44931° · Dec -24.30351°

Galactic ℓ, b

21.443° · -36.029°

Ecliptic λ, β

308.231° · -6.322°

HTM-20 index

1056203733

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