Key parameters at a glance

A radius of 11.66 Earth radii
A mass of 95.35 Earth masses
Surface gravity around 0.70 g
An orbital period of 4.971 days
Semi-major axis 0.0590 AU
Equilibrium temperature 1,120 K (847 °C)
Distance from Earth 884.22 light-years
Earth Similarity Index 0.112
Travel time at Voyager 1 speed 15,593,196 years

WASP-83 b Planet Profile

Physical Specs

Radius

11.66 R⊕

Radius (Jupiter)

1.040 R♃

Mass

95.35 M⊕

Mass (Jupiter)

0.300 M♃

Density

0.35 g/cm³

Surface Gravity

0.70 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.112

HZ Position Inner

Controversial No

Discovery

Year 2015

Method Transit

Facility SuperWASP

Telescope Canon 200mm f/1.8L

Size rank in cohort

Rank by radius

#1571of 1771

top 88.7%

This planet

11.66R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

WASP-89 b 11.66 R⊕ Kepler-490 b 11.65 R⊕ K2-30 b 11.65 R⊕

Metric	Earth	WASP-83 b	Jupiter
Radius (R⊕)	1.00	11.66	11.21
Mass (M⊕)	1.00	95.35	317.83
Density (g/cm³)	5.51	0.35	1.33
Surface Gravity (g)	1.00	0.70	2.53
Insolation (S⊕)	1.00	238.88	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	95.349 M⊕	Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 286865921

Gaia DR2

Gaia DR2 3515865416826633984

Gaia DR3

Gaia DR3 3515865416826633984

System

WASP-83

Percentile among Gas Giant cohort

Radius 11.657 R⊕ · percentile 11 / cohort 1771

Mass 95.349 M⊕ · percentile 5 / cohort 1747

Orbital period 4.97 d · percentile 36 / cohort 1533

Distance 271.10 pc · percentile 57 / cohort 1759

ESI 0.112 · percentile 30 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

4.971 days

Semi-major axis

0.0590 AU

Eccentricity

0.000

Inclination

88.90 °

Year Length

A year here lasts approximately 4.97 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0590 AU.

Transit Fingerprint

Depth

1.040 %

Duration

3.365 h

Impact parameter b

0.230

Rp / R★

0.100600

Transit midpoint (BJD)

2,455,928.8853

Photometric dip

Transit produces a flux drop of 10,400 ppm lasting ≈ 3.36 h.

Extended Orbital Architecture

Planet / star radius ratio

0.100600

Semi-major axis / stellar radius

11.980

Impact parameter (b)

0.230

RV semi-amplitude (K)

32.900 m/s

Transit mid-time (BJD)

2,455,928.8853

Angular separation (arcsec)

0.21800

Eq. Temperature

1,120K

(847 °C)

Insolation (S⊕)

238.88

Earth = 1.00

Earth Similarity (ESI)

0.112

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

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

Hellier et al. 2015

Instrument

iKon-L CCD Camera

Publication

2015-07

Observation locale

Ground

Discovery cohort

Planets confirmed in 2015 at SuperWASP (5 shown).

WASP-89 b · Gas Giant WASP-135 b · Gas Giant WASP-20 b · Gas Giant WASP-74 b · Gas Giant WASP-82 b · Gas Giant

Host System: WASP-83

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,510 K — cooler than the Sun (5,778 K)

Estimated Age

5.00 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.050 R☉

Stellar Mass

1.110 M☉

Metallicity [Fe/H]

0.29

Extended Stellar Properties

Surface gravity (log g)

4.440 dex

Stellar density

1.400 g/cm³

Systemic radial velocity

31.55 km/s

Rotational v·sin i

0.50 km/s

Metallicity ratio

[Fe/H]

Distance

271.10 parsec

Light-years 884.22 ly

V-band magnitude

12.31 mag

Voyager-speed travel 15,593,196 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

3.661 mas

Total Proper Motion

26.504 mas/yr

PM Right Ascension

-23.17 mas/yr

PM Declination

-12.86 mas/yr

Galactic Cartesian (pc)

x = -0.929 · y = -0.166 · z = -0.330

Equatorial (J2000)

RA 190.15196° · Dec -19.28435°

Galactic ℓ, b

299.407° · 43.513°

Ecliptic λ, β

196.993° · -13.699°

HTM-20 index

748053682