Confirmed Exoplanet Discovered 2013

DENIS-P J082303.1-491201 b

A gas giant orbiting the l-type ultra-cool dwarf DENIS-P J082303.1-491201, located approximately 67.7 light-years from Earth.

Key parameters at a glance

  • A radius of 11.90 Earth radii
  • A mass of 9,057.77 Earth masses
  • Surface gravity around 63.96 g
  • An orbital period of 246.360 days
  • Semi-major axis 0.3600 AU
  • Distance from Earth 67.74 light-years
  • Earth Similarity Index 0.250
  • Travel time at Voyager 1 speed 1,194,641 years

DENIS-P J082303.1-491201 b Planet Profile

Physical Specs

Radius
11.90 R⊕
Radius (Jupiter)
1.060 R♃
Mass
9,057.77 M⊕
Mass (Jupiter)
28.500 M♃
Density
29.50 g/cm³
Surface Gravity
63.96 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.250
HZ Position Unknown
Controversial No

Discovery

Year 2013
Method Astrometry
Facility Paranal Observatory
Telescope 8.2 m ESO VLT UT1 Antu Telescope

Size rank in cohort

Rank by radius

#1526of 1771

top 86.1%

This planet

11.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 457 b 11.90 R⊕ 2MASS J22501512+2325342 b 11.90 R⊕ KMT-2020-BLG-0414L c 11.90 R⊕
Metric Earth DENIS-P J082303.1-491201 b Jupiter
Radius (R⊕)1.0011.9011.21
Mass (M⊕)1.009,057.77317.83
Density (g/cm³)5.5129.501.33
Surface Gravity (g)1.0063.962.53
Insolation (S⊕)1.00—0.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 9,057.770 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 388682292

Gaia DR2

Gaia DR2 5514929155583865216

Gaia DR3

Gaia DR3 5514929155583865216

System

DENIS-P J082303.1-491201

Percentile among Gas Giant cohort

Radius 11.900 R⊕ · percentile 13 / cohort 1771
Mass 9,057.770 M⊕ · percentile 100 / cohort 1747
Orbital period 246.36 d · percentile 59 / cohort 1533
Distance 20.77 pc · percentile 4 / cohort 1759
ESI 0.250 · percentile 45 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period
246.360 days
Semi-major axis
0.3600 AU
Eccentricity
0.345
Inclination
56.60 °

Year Length

A year here lasts approximately 246.36 Earth days (67.4% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.3600 AU.

Eq. Temperature

—

 

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.250

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Sahlmann et al. 2013

Instrument

FORS2 Spectrograph

Publication

2013-08

Observation locale

Ground

Discovery cohort

Planets confirmed in 2013 at Paranal Observatory (2 shown).

2MASS J01033563-5515561 AB b · Gas Giant HD 95086 b · Gas Giant

Host System: DENIS-P J082303.1-491201

Spectral Class

L-type ultra-cool dwarf

Effective Temperature

—

Estimated Age

1.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

—

Stellar Mass

0.075 M☉

Metallicity [Fe/H]

—

Distance
20.77 parsec
Light-years 67.74 ly
V-band magnitude
— mag
Voyager-speed travel 1,194,641 yr

Multi-band Host Photometry — 9 bands

9.518.618.56Gaia17.10TESS13.55J12.64H12.06K11.47W111.14W210.75W39.53W4

Astrometric Data

Parallax

48.160 mas

Total Proper Motion

158.300 mas/yr

PM Right Ascension

-157.90 mas/yr

PM Declination

11.80 mas/yr

Galactic Cartesian (pc)

x = -0.382 · y = 0.530 · z = -0.757

Equatorial (J2000)

RA 125.76207° · Dec -49.20030°

Galactic ℓ, b

265.616° · -6.827°

Ecliptic λ, β

154.106° · -64.883°

HTM-20 index

-1395574209

Similar Worlds

CFBDSIR J145829+101343 b

Gas Giant · L-type ultra-cool dwarf

Radius 12.40 R⊕ · 75.3 ly

WISE J033605.05-014350.4 b

Gas Giant · L-type ultra-cool dwarf

Radius 12.60 R⊕ · —

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