Key parameters at a glance

A radius of 13.67 Earth radii
A mass of 5,085.25 Earth masses
Surface gravity around 27.19 g
An orbital period of 5,800,000.000 days
Semi-major axis 350.0000 AU
Equilibrium temperature 1,194 K (921 °C)
Distance from Earth 41.42 light-years
Earth Similarity Index 0.121
Travel time at Voyager 1 speed 730,474 years

brightness_6

Circumbinary planet

VHS J125601.92-125723.9 b orbits a binary-star pair rather than a single host — a minority architecture in the confirmed catalogue.

VHS J125601.92-125723.9 b Planet Profile

Physical Specs

Radius

13.67 R⊕

Radius (Jupiter)

1.220 R♃

Mass

5,085.25 M⊕

Mass (Jupiter)

16.000 M♃

Density

10.90 g/cm³

Surface Gravity

27.19 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.121

HZ Position Unknown

Controversial No

Discovery

Year 2015

Method Imaging

Facility Paranal Observatory

Telescope 4 m ESO Vista Telescope

Size rank in cohort

Rank by radius

#598of 1771

top 33.7%

This planet

13.67R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

WASP-116 b 13.67 R⊕ TOI-4201 b 13.67 R⊕ TOI-1994 b 13.67 R⊕

Metric	Earth	VHS J125601.92-125723.9 b	Jupiter
Radius (R⊕)	1.00	13.67	11.21
Mass (M⊕)	1.00	5,085.25	317.83
Density (g/cm³)	5.51	10.90	1.33
Surface Gravity (g)	1.00	27.19	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	5,085.255 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 2470992

Gaia DR2

Gaia DR2 3526198184723289472

Gaia DR3

Gaia DR3 3526198184723289472

System

VHS J125601.92-125723.9

Percentile among Gas Giant cohort

Radius 13.675 R⊕ · percentile 66 / cohort 1771

Mass 5,085.255 M⊕ · percentile 94 / cohort 1747

Orbital period 5,800,000.00 d · percentile 100 / cohort 1533

Distance 12.70 pc · percentile 1 / cohort 1759

ESI 0.121 · percentile 32 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

5,800,000.000 days

Semi-major axis

350.0000 AU

Eccentricity

0.680

Inclination

24.00 °

Year Length

A year here lasts about 15879.53 Earth years on a highly eccentric trajectory at a mean orbital distance of 350.0000 AU.

Eq. Temperature

1,194K

(921 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.121

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Detection Signatures

Astrometry

Positional wobble of the host star was measured.

Direct imaging

The planet has been imaged directly (rare).

Discovery Paper

Primary reference

Gauza et al. 2015

Instrument

VIRCAM CCD Array

Publication

2015-05

Observation locale

Ground

Host System: VHS J125601.92-125723.9

Spectral Class

M-type red dwarf

Effective Temperature

2,620 K — cooler than the Sun (5,778 K)

Estimated Age

0.14 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

—

Stellar Mass

0.070 M☉

Metallicity [Fe/H]

—

Distance

12.70 parsec

Light-years 41.42 ly

V-band magnitude

17.73 mag

Voyager-speed travel 730,474 yr

Multi-band Host Photometry — 10 bands

Astrometric Data

Parallax

78.800 mas

Total Proper Motion

338.941 mas/yr

PM Right Ascension

-280.00 mas/yr

PM Declination

-191.00 mas/yr

Galactic Cartesian (pc)

x = -0.946 · y = -0.236 · z = -0.224

Equatorial (J2000)

RA 194.00896° · Dec -12.95603°

Galactic ℓ, b

304.671° · 49.900°

Ecliptic λ, β

197.908° · -6.423°

HTM-20 index

-674100655

Similar Worlds

TOI-4201 b

Gas Giant · M-type red dwarf

Radius 13.67 R⊕ · 616.5 ly

AT2021ueyL b

Gas Giant · M-type red dwarf

Radius 13.60 R⊕ · 3,392.0 ly

GJ 317 c

Gas Giant · M-type red dwarf

Radius 13.60 R⊕ · 49.6 ly

GJ 2126 b

Gas Giant · M-type red dwarf

Radius 13.60 R⊕ · 124.4 ly

GJ 179 b

Gas Giant · M-type red dwarf

Radius 13.80 R⊕ · 40.3 ly

GJ 832 b

Gas Giant · M-type red dwarf

Radius 13.80 R⊕ · 16.2 ly

Explore Related Categories

Gas Giant Planets Imaging Discoveries Paranal Observatory Mission M-type red dwarf Hosts