Confirmed Exoplanet Discovered 2006

CHXR 73 b

A gas giant orbiting the m-type red dwarf CHXR 73, located approximately 620.9 light-years from Earth.

Key parameters at a glance

  • A radius of 12.30 Earth radii
  • A mass of 3,994.49 Earth masses
  • Surface gravity around 26.40 g
  • Semi-major axis 210.0000 AU
  • Distance from Earth 620.92 light-years
  • Earth Similarity Index 0.351
  • Travel time at Voyager 1 speed 10,949,857 years

CHXR 73 b Planet Profile

Physical Specs

Radius
12.30 R⊕
Radius (Jupiter)
1.100 R♃
Mass
3,994.49 M⊕
Mass (Jupiter)
12.569 M♃
Density
11.80 g/cm³
Surface Gravity
26.40 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.351
HZ Position Unknown
Controversial No

Discovery

Year 2006
Method Imaging
Facility Hubble Space Telescope
Telescope 2.4 m Hubble Space Telescope

Size rank in cohort

Rank by radius

#1349of 1771

top 76.1%

This planet

12.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HAT-P-13 c 12.30 R⊕ HD 22781 b 12.30 R⊕ HD 11506 d 12.30 R⊕
Metric Earth CHXR 73 b Jupiter
Radius (R⊕)1.0012.3011.21
Mass (M⊕)1.003,994.49317.83
Density (g/cm³)5.5111.801.33
Surface Gravity (g)1.0026.402.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 3,994.486 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 454291479

Gaia DR2

Gaia DR2 5201175987817179136

Gaia DR3

Gaia DR3 5201175987817179136

System

CHXR 73

Percentile among Gas Giant cohort

Radius 12.300 R⊕ · percentile 22 / cohort 1771
Mass 3,994.486 M⊕ · percentile 91 / cohort 1747
Distance 190.37 pc · percentile 49 / cohort 1759
ESI 0.351 · percentile 71 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
— days
Semi-major axis
210.0000 AU
Eccentricity
—
Inclination
— °

Year Length

Orbital period for this planet has not yet been measured.

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.351

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Luhman et al. 2006

Instrument

ACS Camera

Publication

2006-10

Observation locale

Space

Discovery cohort

Planets confirmed in 2006 at Hubble Space Telescope (2 shown).

SWEEPS-4 b · Neptune-like SWEEPS-11 b · Gas Giant

Host System: CHXR 73

Spectral Class

M-type red dwarf

Effective Temperature

3,099 K — cooler than the Sun (5,778 K)

Estimated Age

0.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

—

Stellar Mass

0.350 M☉

Metallicity [Fe/H]

—

Distance
190.37 parsec
Light-years 620.92 ly
V-band magnitude
— mag
Voyager-speed travel 10,949,857 yr

Multi-band Host Photometry — 9 bands

9.417.317.29Gaia15.61TESS12.67J11.32H10.70K10.28W110.20W210.11W39.41W4

Astrometric Data

Parallax

5.234 mas

Total Proper Motion

22.194 mas/yr

PM Right Ascension

-22.19 mas/yr

PM Declination

0.21 mas/yr

Galactic Cartesian (pc)

x = -0.208 · y = 0.050 · z = -0.977

Equatorial (J2000)

RA 166.61940° · Dec -77.62587°

Galactic ℓ, b

297.278° · -15.922°

Ecliptic λ, β

238.707° · -66.333°

HTM-20 index

-771584963

Similar Worlds

USco CTIO 108 b

Gas Giant · M-type red dwarf

Radius 12.30 R⊕ · 469.7 ly

USco1556 b

Gas Giant · M-type red dwarf

Radius 12.30 R⊕ · 458.7 ly

Oph 11 b

Gas Giant · M-type red dwarf

Radius 12.30 R⊕ · 444.1 ly

HIP 81208 C b

Gas Giant · M-type red dwarf

Radius 12.30 R⊕ · 481.2 ly

2MASS J01033563-5515561 AB b

Gas Giant · M-type red dwarf

Radius 12.30 R⊕ · 153.9 ly

GJ 676 A c

Gas Giant · M-type red dwarf

Radius 12.30 R⊕ · 52.3 ly

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