Key parameters at a glance

A radius of 14.18 Earth radii
A mass of 3,591.30 Earth masses
Surface gravity around 17.86 g
Semi-major axis 2,000.0000 AU
Equilibrium temperature 1,050 K (777 °C)
Distance from Earth 155.09 light-years
Earth Similarity Index 0.154
Travel time at Voyager 1 speed 2,734,968 years

GU Psc b Planet Profile

Physical Specs

Radius

14.18 R⊕

Radius (Jupiter)

1.265 R♃

Mass

3,591.30 M⊕

Mass (Jupiter)

11.300 M♃

Density

6.92 g/cm³

Surface Gravity

17.86 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.154

HZ Position Unknown

Controversial No

Discovery

Year 2014

Method Imaging

Facility Gemini Observatory

Telescope 8.19 m Gemini South Telescope

Size rank in cohort

Rank by radius

#366of 1771

top 20.6%

This planet

14.18R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TOI-1601 b 14.20 R⊕ HD 187123 b 14.20 R⊕ OGLE-2011-BLG-0251L b 14.20 R⊕

Metric	Earth	GU Psc b	Jupiter
Radius (R⊕)	1.00	14.18	11.21
Mass (M⊕)	1.00	3,591.30	317.83
Density (g/cm³)	5.51	6.92	1.33
Surface Gravity (g)	1.00	17.86	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	3,591.300 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 408263079

Gaia DR2

Gaia DR2 2784120641627589760

Gaia DR3

Gaia DR3 2784120641627589760

System

GU Psc

Percentile among Gas Giant cohort

Radius 14.179 R⊕ · percentile 79 / cohort 1771

Mass 3,591.300 M⊕ · percentile 90 / cohort 1747

Distance 47.55 pc · percentile 18 / cohort 1759

ESI 0.154 · percentile 37 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

— days

Semi-major axis

2,000.0000 AU

Eccentricity

—

Inclination

— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

1,050K

(777 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.154

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Discovery Paper

Primary reference

Naud et al. 2014

Instrument

GMOS Spectrograph

Publication

2014-05

Observation locale

Ground

Host System: GU Psc

Spectral Class

M-type red dwarf

Effective Temperature

4,032 K — cooler than the Sun (5,778 K)

Estimated Age

0.10 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.450 R☉

Stellar Mass

0.325 M☉

Metallicity [Fe/H]

0.10

Extended Stellar Properties

Surface gravity (log g)

4.781 dex

Stellar density

6.895 g/cm³

Systemic radial velocity

-1.60 km/s

Rotational v·sin i

23.00 km/s

Metallicity ratio

[Fe/H]

Distance

47.55 parsec

Light-years 155.09 ly

V-band magnitude

14.15 mag

Voyager-speed travel 2,734,968 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

21.002 mas

Total Proper Motion

139.574 mas/yr

PM Right Ascension

96.64 mas/yr

PM Declination

-100.70 mas/yr

Galactic Cartesian (pc)

x = 0.908 · y = 0.298 · z = 0.293

Equatorial (J2000)

RA 18.14649° · Dec 17.06500°

Galactic ℓ, b

130.153° · -45.510°

Ecliptic λ, β

23.225° · 8.674°

HTM-20 index

892027630

Similar Worlds

GJ 9773 b

Gas Giant · M-type red dwarf

Radius 14.20 R⊕ · 51.9 ly

OGLE-2011-BLG-0251L b

Gas Giant · M-type red dwarf

Radius 14.20 R⊕ · 8,382.2 ly

OGLE-2014-BLG-0319L b

Gas Giant · M-type red dwarf

Radius 14.10 R⊕ · 25,211.9 ly

GJ 3512 b

Gas Giant · M-type red dwarf

Radius 14.30 R⊕ · 30.9 ly

GJ 3512 c

Gas Giant · M-type red dwarf

Radius 14.30 R⊕ · 30.9 ly

OGLE-2012-BLG-0724L b

Gas Giant · M-type red dwarf

Radius 14.30 R⊕ · 21,852.5 ly

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