Confirmed Exoplanet Discovered 2004

GQ Lup b

A gas giant orbiting the k-type orange GQ Lup, located approximately 493.0 light-years from Earth.

Key parameters at a glance

  • A radius of 33.60 Earth radii
  • A mass of 6,356.00 Earth masses
  • Surface gravity around 5.63 g
  • Semi-major axis 100.0000 AU
  • Equilibrium temperature 2,650 K (2377 °C)
  • Distance from Earth 493.05 light-years
  • Earth Similarity Index 0.035
  • Travel time at Voyager 1 speed 8,694,879 years

GQ Lup b Planet Profile

Physical Specs

Radius
33.60 R⊕
Radius (Jupiter)
3.000 R♃
Mass
6,356.00 M⊕
Mass (Jupiter)
20.000 M♃
Density
0.92 g/cm³
Surface Gravity
5.63 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.035
HZ Position Unknown
Controversial No

Discovery

Year 2004
Method Imaging
Facility Paranal Observatory
Telescope 8.2 m ESO VLT UT4 Yepun Telescope

Size rank in cohort

Rank by radius

#2of 1771

top 0.1%

This planet

33.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Kepler-297 d 32.60 R⊕ DH Tau b 30.26 R⊕ Kepler-1979 b 29.33 R⊕
Metric Earth GQ Lup b Jupiter
Radius (R⊕)1.0033.6011.21
Mass (M⊕)1.006,356.00317.83
Density (g/cm³)5.510.921.33
Surface Gravity (g)1.005.632.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 6,356.000 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 442623945

Gaia DR2

Gaia DR2 6011522757643074304

Gaia DR3

Gaia DR3 6011522757643074304

System

GQ Lup

Percentile among Gas Giant cohort

Radius 33.600 R⊕ · percentile 100 / cohort 1771
Mass 6,356.000 M⊕ · percentile 96 / cohort 1747
Distance 151.17 pc · percentile 44 / cohort 1759
ESI 0.035 · percentile 1 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
— days
Semi-major axis
100.0000 AU
Eccentricity
—
Inclination
— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

2,650K

(2377 °C)

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.035

0 = alien, 1 = Earth-identical

Insufficient insolation data — the dayside is scorched.

Discovery Paper

Primary reference

Neuhauser et al. 2005

Instrument

NACO Camera

Publication

2005-05

Observation locale

Ground

Host System: GQ Lup

Spectral Class

K-type orange

Effective Temperature

4,360 K — cooler than the Sun (5,778 K)

Estimated Age

0.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.942 R☉

Stellar Mass

0.700 M☉

Metallicity [Fe/H]

-0.35

Extended Stellar Properties

Surface gravity (log g)

3.650 dex

Rotational v·sin i

6.33 km/s

Metallicity ratio

[Fe/H]

Distance
151.17 parsec
Light-years 493.05 ly
V-band magnitude
11.59 mag
Voyager-speed travel 8,694,879 yr

Multi-band Host Photometry — 12 bands

2.412.812.76B11.59V11.26Gaia10.40TESS10.80Ic8.61J7.70H7.10K6.13W15.54W24.34W32.38W4

Astrometric Data

Parallax

6.587 mas

Total Proper Motion

27.569 mas/yr

PM Right Ascension

-14.26 mas/yr

PM Declination

-23.60 mas/yr

Galactic Cartesian (pc)

x = -0.439 · y = -0.684 · z = -0.583

Equatorial (J2000)

RA 237.30036° · Dec -35.65151°

Galactic ℓ, b

338.925° · 14.511°

Ecliptic λ, β

242.933° · -15.234°

HTM-20 index

-490973034

Similar Worlds

CT Cha b

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Radius 24.66 R⊕ · 622.0 ly

HIP 65 A b

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Radius 22.75 R⊕ · 201.5 ly

PDS 70 c

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PDS 70 b

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Radius 21.97 R⊕ · 368.8 ly

GSC 06214-00210 b

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Radius 20.18 R⊕ · 353.9 ly

TOI-2669 b

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Radius 19.73 R⊕ · 1,283.2 ly

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