Key parameters at a glance

A radius of 14.10 Earth radii
A mass of 184.34 Earth masses
Surface gravity around 0.93 g
An orbital period of 472.000 days
Semi-major axis 1.2600 AU
Distance from Earth 172.55 light-years
Earth Similarity Index 0.265
Travel time at Voyager 1 speed 3,042,975 years

HD 44219 b Planet Profile

Physical Specs

Radius

14.10 R⊕

Radius (Jupiter)

1.260 R♃

Mass

184.34 M⊕

Mass (Jupiter)

0.580 M♃

Density

0.36 g/cm³

Surface Gravity

0.93 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.265

HZ Position Unknown

Controversial No

Discovery

Year 2010

Method Radial Velocity

Facility La Silla Observatory

Telescope 3.6 m ESO Telescope

Size rank in cohort

Rank by radius

#371of 1771

top 20.9%

This planet

14.10R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 27894 b 14.10 R⊕ HD 103720 b 14.10 R⊕ HD 216770 b 14.10 R⊕

Metric	Earth	HD 44219 b	Jupiter
Radius (R⊕)	1.00	14.10	11.21
Mass (M⊕)	1.00	184.34	317.83
Density (g/cm³)	5.51	0.36	1.33
Surface Gravity (g)	1.00	0.93	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Best measured mass	184.340 M⊕	Direct mass measurement (not derived).
Minimum mass (M sin i)	184.330 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 44219

HIP

HIP 30114

TIC

TIC 443055162

Gaia DR2

Gaia DR2 3001428566419966592

Gaia DR3

Gaia DR3 3001428566419966592

System

HD 44219

Percentile among Gas Giant cohort

Radius 14.100 R⊕ · percentile 77 / cohort 1771

Mass 184.340 M⊕ · percentile 17 / cohort 1747

Orbital period 472.00 d · percentile 67 / cohort 1533

Distance 52.91 pc · percentile 21 / cohort 1759

ESI 0.265 · percentile 49 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

472.000 days

Semi-major axis

1.2600 AU

Eccentricity

0.410

Inclination

90.00 °

Year Length

A year here lasts about 1.29 Earth years on a highly eccentric trajectory at a mean orbital distance of 1.2600 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.265

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Naef et al. 2010

Instrument

HARPS Spectrograph

Publication

2010-11

Observation locale

Ground

Discovery cohort

Planets confirmed in 2010 at La Silla Observatory (12 shown).

GJ 3634 b · Sub-Neptune HD 10180 f · Neptune-like HD 10180 e · Neptune-like GJ 676 A b · Gas Giant HD 204313 b · Gas Giant HD 28254 b · Gas Giant HD 1690 b · Gas Giant HD 10180 h · Neptune-like HD 113538 c · Gas Giant HD 25171 b · Gas Giant HD 8535 b · Gas Giant HD 43197 b · Gas Giant

Host System: HD 44219

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,752 K — cooler than the Sun (5,778 K)

Estimated Age

8.40 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.320 R☉

Stellar Mass

1.200 M☉

Metallicity [Fe/H]

0.03

Extended Stellar Properties

Surface gravity (log g)

4.210 dex

Stellar density

0.501 g/cm³

Systemic radial velocity

-12.07 km/s

Rotational v·sin i

2.20 km/s

Activity index (log R'HK)

-5.040

Metallicity ratio

[Fe/H]

Distance

52.91 parsec

Light-years 172.55 ly

V-band magnitude

7.69 mag

Voyager-speed travel 3,042,975 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

18.873 mas

Total Proper Motion

74.222 mas/yr

PM Right Ascension

72.35 mas/yr

PM Declination

-16.57 mas/yr

Galactic Cartesian (pc)

x = -0.087 · y = 0.979 · z = -0.186

Equatorial (J2000)

RA 95.06000° · Dec -10.72508°

Galactic ℓ, b

219.078° · -11.743°

Ecliptic λ, β

96.000° · -34.059°

HTM-20 index

1242441569