Confirmed Exoplanet Discovered 2006

SWEEPS-11 b

A gas giant orbiting the unknown SWEEPS-11, located approximately 27,723.3 light-years from Earth.

Key parameters at a glance

  • A radius of 12.67 Earth radii
  • A mass of 3,082.82 Earth masses
  • Surface gravity around 19.22 g
  • An orbital period of 1.796 days
  • Semi-major axis 0.0300 AU
  • Distance from Earth 27,723.26 light-years
  • Earth Similarity Index 0.390
  • Travel time at Voyager 1 speed 488,899,663 years

SWEEPS-11 b Planet Profile

Physical Specs

Radius
12.67 R⊕
Radius (Jupiter)
1.130 R♃
Mass
3,082.82 M⊕
Mass (Jupiter)
9.700 M♃
Density
8.34 g/cm³
Surface Gravity
19.22 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.390
HZ Position Unknown
Controversial No

Discovery

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

Size rank in cohort

Rank by radius

#1174of 1771

top 66.2%

This planet

12.67R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

Metric Earth SWEEPS-11 b Jupiter
Radius (R⊕)1.0012.6711.21
Mass (M⊕)1.003,082.82317.83
Density (g/cm³)5.518.341.33
Surface Gravity (g)1.0019.222.53
Insolation (S⊕)1.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 3,082.820 M⊕ Direct mass measurement (not derived).

Percentile among Gas Giant cohort

Radius 12.666 R⊕ · percentile 34 / cohort 1771
Mass 3,082.820 M⊕ · percentile 87 / cohort 1747
Orbital period 1.80 d · percentile 5 / cohort 1533
Distance 8,500.00 pc · percentile 100 / cohort 1759
ESI 0.390 · percentile 83 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
1.796 days
Semi-major axis
0.0300 AU
Eccentricity
Inclination
°

Year Length

A year here lasts approximately 1.80 Earth days (0.5% of a terrestrial year) at a mean orbital distance of 0.0300 AU.

Eq. Temperature

 

Insolation (S⊕)

Earth = 1.00

Earth Similarity (ESI)

0.390

0 = alien, 1 = Earth-identical

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

Sahu et al. 2006

Instrument

ACS Camera

Publication

2006-10

Observation locale

Space

Discovery cohort

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

Host System: SWEEPS-11

Spectral Class

Unknown

Effective Temperature

Estimated Age

Stellar Radius

1.450 R☉

Stellar Mass

1.100 M☉

Metallicity [Fe/H]

Distance
8,500.00 parsec
Light-years 27,723.26 ly
V-band magnitude
19.83 mag
Voyager-speed travel 488,899,663 yr

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