Confirmed Exoplanet Discovered 2006

SWEEPS-4 b

A neptune-like orbiting the unknown SWEEPS-4, located approximately 27,723.3 light-years from Earth.

Key parameters at a glance

  • A radius of 9.08 Earth radii
  • A mass of 1,207.70 Earth masses
  • Surface gravity around 14.65 g
  • An orbital period of 4.200 days
  • Semi-major axis 0.0550 AU
  • Distance from Earth 27,723.26 light-years
  • Earth Similarity Index 0.436
  • Travel time at Voyager 1 speed 488,899,663 years

SWEEPS-4 b Planet Profile

Physical Specs

Radius
9.08 R⊕
Radius (Jupiter)
0.810 R♃
Mass
1,207.70 M⊕
Mass (Jupiter)
3.800 M♃
Density
8.87 g/cm³
Surface Gravity
14.65 g (Earth)

Classification

Planet Type

Neptune-like

ESI Score 0.436
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

#83of 574

top 14.3%

This planet

9.08R⊕

Neptune-like median

6.39R⊕

Nearest-size peers

TOI-199 b 9.08 R⊕ HD 332231 b 9.07 R⊕ TOI-1268 b 9.10 R⊕
Metric Earth SWEEPS-4 b Jupiter
Radius (R⊕)1.009.0811.21
Mass (M⊕)1.001,207.70317.83
Density (g/cm³)5.518.871.33
Surface Gravity (g)1.0014.652.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 1,207.700 M⊕ Direct mass measurement (not derived).

Percentile among Neptune-like cohort

Radius 9.079 R⊕ · percentile 86 / cohort 574
Mass 1,207.700 M⊕ · percentile 98 / cohort 574
Orbital period 4.20 d · percentile 14 / cohort 524
Distance 8,500.00 pc · percentile 100 / cohort 572
ESI 0.436 · percentile 79 / cohort 574

Orbit & Habitability

Orbital Dynamics

Period
4.200 days
Semi-major axis
0.0550 AU
Eccentricity
—
Inclination
— °

Year Length

A year here lasts approximately 4.20 Earth days (1.1% of a terrestrial year) at a mean orbital distance of 0.0550 AU.

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.436

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).

SWEEPS-11 b · Gas Giant CHXR 73 b · Gas Giant

Host System: SWEEPS-4

Spectral Class

Unknown

Effective Temperature

—

Estimated Age

—

Stellar Radius

1.180 R☉

Stellar Mass

1.240 M☉

Metallicity [Fe/H]

—

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

Similar Worlds

KMT-2019-BLG-1042L b

Neptune-like · Unknown

Radius 9.05 R⊕ · 21,526.3 ly

KMT-2021-BLG-1372L b

Neptune-like · Unknown

Radius 9.12 R⊕ · 19,471.5 ly

KMT-2018-BLG-0748L b

Neptune-like · Unknown

Radius 9.01 R⊕ · 23,809.4 ly

OGLE-2011-BLG-0173L b

Neptune-like · Unknown

Radius 9.01 R⊕ · 19,895.5 ly

OGLE-2018-BLG-1212L b

Neptune-like · Unknown

Radius 9.32 R⊕ · 5,055.4 ly

OGLE-2008-BLG-092L b

Neptune-like · Unknown

Radius 8.74 R⊕ · 26,418.6 ly

Explore Related Categories

Neptune-like Planets Transit Discoveries Hubble Space Telescope Mission