Key parameters at a glance

A radius of 12.80 Earth radii
A mass of 1,900.00 Earth masses
Surface gravity around 11.60 g
An orbital period of 851.800 days
Semi-major axis 1.7600 AU
Distance from Earth 193.03 light-years
Earth Similarity Index 0.438
Travel time at Voyager 1 speed 3,404,007 years

HD 70573 b Planet Profile

Physical Specs

Radius

12.80 R⊕

Radius (Jupiter)

1.140 R♃

Mass

1,900.00 M⊕

Mass (Jupiter)

6.100 M♃

Density

4.98 g/cm³

Surface Gravity

11.60 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.438

HZ Position Unknown

Controversial No

Discovery

Year 2007

Method Radial Velocity

Facility La Silla Observatory

Telescope 2.2 m MPG/ESO Telescope

Size rank in cohort

Rank by radius

#1063of 1771

top 60.0%

This planet

12.80R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 240210 b 12.80 R⊕ HD 29985 b 12.80 R⊕ HD 148164 c 12.80 R⊕

Metric	Earth	HD 70573 b	Jupiter
Radius (R⊕)	1.00	12.80	11.21
Mass (M⊕)	1.00	1,900.00	317.83
Density (g/cm³)	5.51	4.98	1.33
Surface Gravity (g)	1.00	11.60	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	1,900.000 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 70573

TIC

TIC 455235218

Gaia DR2

Gaia DR2 3090083696499829376

Gaia DR3

Gaia DR3 3090083696499829376

System

HD 70573

Percentile among Gas Giant cohort

Radius 12.800 R⊕ · percentile 37 / cohort 1771

Mass 1,900.000 M⊕ · percentile 79 / cohort 1747

Orbital period 851.80 d · percentile 74 / cohort 1533

Distance 59.18 pc · percentile 25 / cohort 1759

ESI 0.438 · percentile 97 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

851.800 days

Semi-major axis

1.7600 AU

Eccentricity

0.400

Inclination

— °

Year Length

A year here lasts about 2.33 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.7600 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.438

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Setiawan et al. 2007

Instrument

FEROS Spectrograph

Publication

2007-05

Observation locale

Ground

Discovery cohort

Planets confirmed in 2007 at La Silla Observatory (10 shown).

GJ 581 c · Sub-Neptune GJ 674 b · Sub-Neptune HD 219828 b · Neptune-like HD 221287 b · Gas Giant HD 171028 b · Gas Giant BD-13 2130 b · Gas Giant HD 156846 b · Gas Giant HD 190647 b · Gas Giant HD 4113 b · Gas Giant HD 100777 b · Gas Giant

Host System: HD 70573

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,737 K — cooler than the Sun (5,778 K)

Estimated Age

0.10 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

0.977 R☉

Stellar Mass

1.000 M☉

Metallicity [Fe/H]

-0.18

Extended Stellar Properties

Surface gravity (log g)

4.590 dex

Stellar density

1.652 g/cm³

Systemic radial velocity

20.46 km/s

Rotational v·sin i

14.70 km/s

Metallicity ratio

[Fe/H]

Distance

59.18 parsec

Light-years 193.03 ly

V-band magnitude

8.67 mag

Voyager-speed travel 3,404,007 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

16.868 mas

Total Proper Motion

71.166 mas/yr

PM Right Ascension

-51.43 mas/yr

PM Declination

-49.18 mas/yr

Galactic Cartesian (pc)

x = -0.583 · y = 0.812 · z = 0.032

Equatorial (J2000)

RA 125.70792° · Dec 1.85911°

Galactic ℓ, b

222.066° · 21.112°

Ecliptic λ, β

127.595° · -17.041°

HTM-20 index

-202504034