Key parameters at a glance

A mass of 4,195.33 Earth masses
An orbital period of 14.479 days
Semi-major axis 0.1214 AU
Distance from Earth 227.37 light-years
Travel time at Voyager 1 speed 4,009,644 years

HD 179079 b Planet Profile

Physical Specs

Radius

— R⊕

Radius (Jupiter)

— R♃

Mass

4,195.33 M⊕

Mass (Jupiter)

13.200 M♃

Density

— g/cm³

Surface Gravity

— g (Earth)

Classification

Planet Type

Unclassified

ESI Score —

HZ Position Unknown

Controversial No

Discovery

Year 2008

Method Radial Velocity

Facility W. M. Keck Observatory

Telescope 10 m Keck I Telescope

Metric	Earth	HD 179079 b	Jupiter
Radius (R⊕)	1.00	—	11.21
Mass (M⊕)	1.00	4,195.33	317.83
Density (g/cm³)	5.51	—	1.33
Surface Gravity (g)	1.00	—	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	4,195.335 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	25.744 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 179079

HIP

HIP 94256

TIC

TIC 48917782

Gaia DR2

Gaia DR2 4261265619668314624

Gaia DR3

Gaia DR3 4261265619668314624

System

HD 179079

Percentile among Unclassified cohort

Mass 4,195.335 M⊕ · percentile 93 / cohort 42

Orbital period 14.48 d · percentile 37 / cohort 43

Distance 69.71 pc · percentile 70 / cohort 43

Orbit & Habitability

Orbital Dynamics

Period

14.479 days

Semi-major axis

0.1214 AU

Eccentricity

0.049

Inclination

0.38 °

Year Length

A year here lasts approximately 14.48 Earth days (4.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1214 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

—

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Valenti et al. 2009

Instrument

HIRES Spectrometer

Publication

2009-09

Observation locale

Ground

Discovery cohort

Planets confirmed in 2008 at W. M. Keck Observatory (7 shown).

HD 11964 c · Neptune-like HD 183263 c · Gas Giant HD 187123 c · Gas Giant HD 73534 b · Gas Giant HD 11506 c · Gas Giant HR 8799 d · Gas Giant HD 7924 b · Unclassified

Host System: HD 179079

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,646 K — cooler than the Sun (5,778 K)

Estimated Age

6.99 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.630 R☉

Stellar Mass

1.140 M☉

Metallicity [Fe/H]

0.24

Extended Stellar Properties

Surface gravity (log g)

4.160 dex

Stellar density

0.259 g/cm³

Systemic radial velocity

19.73 km/s

Rotational v·sin i

1.00 km/s

Metallicity ratio

[Fe/H]

Distance

69.71 parsec

Light-years 227.37 ly

V-band magnitude

7.95 mag

Voyager-speed travel 4,009,644 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

14.317 mas

Total Proper Motion

161.450 mas/yr

PM Right Ascension

-134.42 mas/yr

PM Declination

-89.42 mas/yr

Galactic Cartesian (pc)

x = 0.305 · y = -0.951 · z = -0.046

Equatorial (J2000)

RA 287.79037° · Dec -2.63877°

Galactic ℓ, b

32.827° · -5.590°

Ecliptic λ, β

288.905° · 19.640°

HTM-20 index

-824542996

Observation Record

Photometric series

RV measurements

Stellar spectra