Key parameters at a glance

A radius of 13.30 Earth radii
A mass of 715.09 Earth masses
Surface gravity around 4.04 g
An orbital period of 379.100 days
Semi-major axis 1.0300 AU
Distance from Earth 317.15 light-years
Earth Similarity Index 0.375
Travel time at Voyager 1 speed 5,592,989 years

HD 73526 c Planet Profile

Physical Specs

Radius

13.30 R⊕

Radius (Jupiter)

1.190 R♃

Mass

715.09 M⊕

Mass (Jupiter)

2.250 M♃

Density

1.67 g/cm³

Surface Gravity

4.04 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.375

HZ Position Unknown

Controversial No

Discovery

Year 2005

Method Radial Velocity

Facility Anglo-Australian Telescope

Telescope 3.9 m Anglo-Australian Telescope

Size rank in cohort

Rank by radius

#793of 1771

top 44.7%

This planet

13.30R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 12661 b 13.30 R⊕ HD 129445 b 13.30 R⊕ GJ 876 b 13.30 R⊕

Metric	Earth	HD 73526 c	Jupiter
Radius (R⊕)	1.00	13.30	11.21
Mass (M⊕)	1.00	715.09	317.83
Density (g/cm³)	5.51	1.67	1.33
Surface Gravity (g)	1.00	4.04	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	715.090 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 73526

HIP

HIP 42282

TIC

TIC 180661948

Gaia DR2

Gaia DR2 5528196343922685056

Gaia DR3

Gaia DR3 5528196343926579968

System

HD 73526

Percentile among Gas Giant cohort

Radius 13.300 R⊕ · percentile 53 / cohort 1771

Mass 715.090 M⊕ · percentile 58 / cohort 1747

Orbital period 379.10 d · percentile 63 / cohort 1533

Distance 97.24 pc · percentile 34 / cohort 1759

ESI 0.375 · percentile 78 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

379.100 days

Semi-major axis

1.0300 AU

Eccentricity

0.280

Inclination

— °

Year Length

A year here lasts about 1.04 Earth years on a mildly elliptical path at a mean orbital distance of 1.0300 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.375

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Tinney et al. 2006

Instrument

UCLES Spectrograph

Publication

2006-08

Observation locale

Ground

Host System: HD 73526

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,601 K — cooler than the Sun (5,778 K)

Estimated Age

9.20 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.530 R☉

Stellar Mass

1.014 M☉

Metallicity [Fe/H]

0.22

Extended Stellar Properties

Surface gravity (log g)

4.120 dex

Stellar density

0.337 g/cm³

Systemic radial velocity

26.38 km/s

Rotational v·sin i

1.69 km/s

Metallicity ratio

[Fe/H]

Distance

97.24 parsec

Light-years 317.15 ly

V-band magnitude

8.99 mag

Voyager-speed travel 5,592,989 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

10.255 mas

Total Proper Motion

170.318 mas/yr

PM Right Ascension

-61.10 mas/yr

PM Declination

158.98 mas/yr

Galactic Cartesian (pc)

x = -0.476 · y = 0.581 · z = -0.660

Equatorial (J2000)

RA 129.31833° · Dec -41.31842°

Galactic ℓ, b

260.680° · -0.186°

Ecliptic λ, β

150.385° · -56.813°

HTM-20 index

-539891532

Observation Record

Photometric series

RV measurements

Archive notes