Key parameters at a glance

A radius of 13.90 Earth radii
A mass of 263.80 Earth masses
Surface gravity around 1.37 g
An orbital period of 159.986 days
Semi-major axis 0.4920 AU
Distance from Earth 74.49 light-years
Earth Similarity Index 0.293
Travel time at Voyager 1 speed 1,313,622 years

HIP 34222 b Planet Profile

Physical Specs

Radius

13.90 R⊕

Radius (Jupiter)

1.240 R♃

Mass

263.80 M⊕

Mass (Jupiter)

0.830 M♃

Density

0.54 g/cm³

Surface Gravity

1.37 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.293

HZ Position Unknown

Controversial No

Discovery

Year 2021

Method Radial Velocity

Facility Cerro Tololo Inter-American Observatory

Telescope 1.5 m SMARTS telescope

Size rank in cohort

Rank by radius

#456of 1771

top 25.7%

This planet

13.90R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

24 Sex c 13.90 R⊕ HD 148156 b 13.90 R⊕ HD 134987 c 13.90 R⊕

Metric	Earth	HIP 34222 b	Jupiter
Radius (R⊕)	1.00	13.90	11.21
Mass (M⊕)	1.00	263.80	317.83
Density (g/cm³)	5.51	0.54	1.33
Surface Gravity (g)	1.00	1.37	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	263.798 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HIP

HIP 34222

TIC

TIC 91842379

Gaia DR2

Gaia DR2 884039857341503616

Gaia DR3

Gaia DR3 884039857341503616

System

HIP 34222

Percentile among Gas Giant cohort

Radius 13.900 R⊕ · percentile 72 / cohort 1771

Mass 263.798 M⊕ · percentile 28 / cohort 1747

Orbital period 159.99 d · percentile 56 / cohort 1533

Distance 22.84 pc · percentile 5 / cohort 1759

ESI 0.293 · percentile 56 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

159.986 days

Semi-major axis

0.4920 AU

Eccentricity

0.305

Inclination

— °

Year Length

A year here lasts approximately 159.99 Earth days (43.8% of a terrestrial year) on a highly eccentric trajectory at a mean orbital distance of 0.4920 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.293

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Paredes et al. 2021

Instrument

CHIRON spectrometer

Publication

2021-11

Observation locale

Ground

Discovery cohort

Planets confirmed in 2021 at Cerro Tololo Inter-American Observatory (2 shown).

HIP 86221 b · Gas Giant HIP 5763 b · Gas Giant

Host System: HIP 34222

Spectral Class

K-type orange

Effective Temperature

4,050 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.619 R☉

Stellar Mass

0.620 M☉

Metallicity [Fe/H]

—

Distance

22.84 parsec

Light-years 74.49 ly

V-band magnitude

10.14 mag

Voyager-speed travel 1,313,622 yr

Multi-band Host Photometry — 12 bands

Astrometric Data

Parallax

43.757 mas

Total Proper Motion

108.589 mas/yr

PM Right Ascension

-48.79 mas/yr

PM Declination

-97.01 mas/yr

Galactic Cartesian (pc)

x = -0.251 · y = 0.851 · z = 0.461

Equatorial (J2000)

RA 106.42578° · Dec 27.47041°

Galactic ℓ, b

189.414° · 15.038°

Ecliptic λ, β

104.580° · 4.859°

HTM-20 index

303713431

Similar Worlds

HD 2952 b

Gas Giant · K-type orange

Radius 13.90 R⊕ · 359.1 ly

HIP 111909 c

Gas Giant · K-type orange

Radius 13.90 R⊕ · 287.3 ly

HD 128356 b

Gas Giant · K-type orange

Radius 13.90 R⊕ · 85.3 ly

HIP 65407 c

Gas Giant · K-type orange

Radius 13.90 R⊕ · 201.5 ly

24 Sex c

Gas Giant · K-type orange

Radius 13.90 R⊕ · 235.1 ly

7 CMa c

Gas Giant · K-type orange

Radius 13.90 R⊕ · 64.6 ly

Explore Related Categories

Gas Giant Planets Radial Velocity Discoveries Cerro Tololo Inter-American Observatory Mission K-type orange Hosts