Key parameters at a glance

A radius of 13.20 Earth radii
A mass of 905.49 Earth masses
Surface gravity around 5.20 g
An orbital period of 157.350 days
Semi-major axis 0.5940 AU
Distance from Earth 398.29 light-years
Earth Similarity Index 0.392
Travel time at Voyager 1 speed 7,023,763 years

HD 32518 b Planet Profile

Physical Specs

Radius

13.20 R⊕

Radius (Jupiter)

1.180 R♃

Mass

905.49 M⊕

Mass (Jupiter)

2.849 M♃

Density

2.16 g/cm³

Surface Gravity

5.20 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.392

HZ Position Unknown

Controversial No

Discovery

Year 2009

Method Radial Velocity

Facility Thueringer Landessternwarte Tautenburg

Telescope 2.0 m Alfred Jensch Telescope

Size rank in cohort

Rank by radius

#847of 1771

top 47.8%

This planet

13.20R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 12661 c 13.20 R⊕ HD 37605 b 13.20 R⊕ MOA-2009-BLG-387L b 13.20 R⊕

Metric	Earth	HD 32518 b	Jupiter
Radius (R⊕)	1.00	13.20	11.21
Mass (M⊕)	1.00	905.49	317.83
Density (g/cm³)	5.51	2.16	1.33
Surface Gravity (g)	1.00	5.20	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	905.493 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 32518

HIP

HIP 24003

TIC

TIC 310836777

Gaia DR2

Gaia DR2 497653157602636928

Gaia DR3

Gaia DR3 497653157602636928

System

HD 32518

Percentile among Gas Giant cohort

Radius 13.200 R⊕ · percentile 49 / cohort 1771

Mass 905.493 M⊕ · percentile 64 / cohort 1747

Orbital period 157.35 d · percentile 56 / cohort 1533

Distance 122.12 pc · percentile 39 / cohort 1759

ESI 0.392 · percentile 84 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

157.350 days

Semi-major axis

0.5940 AU

Eccentricity

0.028

Inclination

— °

Year Length

A year here lasts approximately 157.35 Earth days (43.1% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.5940 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.392

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Dollinger et al. 2009

Instrument

Coude Echelle Spectrograph

Publication

2009-10

Observation locale

Ground

Discovery cohort

Planets confirmed in 2009 at Thueringer Landessternwarte Tautenburg (2 shown).

HD 8673 b · Gas Giant 11 UMi b · Gas Giant

Host System: HD 32518

Spectral Class

K-type orange

Effective Temperature

4,580 K — cooler than the Sun (5,778 K)

Estimated Age

5.83 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

10.220 R☉

Stellar Mass

1.130 M☉

Metallicity [Fe/H]

-0.15

Extended Stellar Properties

Surface gravity (log g)

2.100 dex

Systemic radial velocity

-6.47 km/s

Rotational v·sin i

1.20 km/s

Metallicity ratio

[Fe/H]

Distance

122.12 parsec

Light-years 398.29 ly

V-band magnitude

6.43 mag

Voyager-speed travel 7,023,763 yr

Multi-band Host Photometry — 7 bands

Astrometric Data

Parallax

8.160 mas

Total Proper Motion

87.360 mas/yr

PM Right Ascension

61.13 mas/yr

PM Declination

-62.41 mas/yr

Galactic Cartesian (pc)

x = 0.076 · y = 0.340 · z = 0.938

Equatorial (J2000)

RA 77.40376° · Dec 69.63914°

Galactic ℓ, b

142.123° · 17.122°

Ecliptic λ, β

83.670° · 46.476°

HTM-20 index

1747121113

Similar Worlds

KMT-2024-BLG-1209L b

Gas Giant · K-type orange

Radius 13.20 R⊕ · 12,817.9 ly

HD 37605 b

Gas Giant · K-type orange

Radius 13.20 R⊕ · 152.6 ly

OGLE-2003-BLG-235L b

Gas Giant · K-type orange

Radius 13.20 R⊕ · 18,917.0 ly

HD 1502 b

Gas Giant · K-type orange

Radius 13.20 R⊕ · 622.8 ly

HD 12661 c

Gas Giant · K-type orange

Radius 13.20 R⊕ · 123.4 ly

HD 181342 b

Gas Giant · K-type orange

Radius 13.20 R⊕ · 392.7 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Thueringer Landessternwarte Tautenburg Mission K-type orange Hosts