Key parameters at a glance

A radius of 14.00 Earth radii
A mass of 126.00 Earth masses
Surface gravity around 0.64 g
An orbital period of 3,449.000 days
Semi-major axis 4.5000 AU
Distance from Earth 169.81 light-years
Earth Similarity Index 0.243
Travel time at Voyager 1 speed 2,994,643 years

1 sibling around HD 74698

HD 74698 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
HD 74698 b	Neptune-like	5.12	23.00	15.017	—	2023
HD 74698 c this	Gas Giant	14.00	126.00	3,449.000	—	2023

HD 74698 c Planet Profile

Physical Specs

Radius

14.00 R⊕

Radius (Jupiter)

1.240 R♃

Mass

126.00 M⊕

Mass (Jupiter)

0.400 M♃

Density

0.25 g/cm³

Surface Gravity

0.64 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.243

HZ Position Outer

Controversial No

Discovery

Year 2023

Method Radial Velocity

Facility La Silla Observatory

Telescope 3.6 m ESO Telescope

Size rank in cohort

Rank by radius

#415of 1771

top 23.4%

This planet

14.00R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HD 9446 b 14.00 R⊕ HD 156411 b 14.00 R⊕ HD 224693 b 14.00 R⊕

Metric	Earth	HD 74698 c	Jupiter
Radius (R⊕)	1.00	14.00	11.21
Mass (M⊕)	1.00	126.00	317.83
Density (g/cm³)	5.51	0.25	1.33
Surface Gravity (g)	1.00	0.64	2.53
Insolation (S⊕)	1.00	0.09	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	126.000 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 74698

HIP

HIP 42532

TIC

TIC 308087983

Gaia DR2

Gaia DR2 5220639164696365312

Gaia DR3

Gaia DR3 5220639164696365312

System

HD 74698

Percentile among Gas Giant cohort

Radius 14.000 R⊕ · percentile 74 / cohort 1771

Mass 126.000 M⊕ · percentile 9 / cohort 1747

Orbital period 3,449.00 d · percentile 90 / cohort 1533

Distance 52.06 pc · percentile 21 / cohort 1759

ESI 0.243 · percentile 42 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

3,449.000 days

Semi-major axis

4.5000 AU

Eccentricity

0.200

Inclination

— °

Year Length

A year here lasts about 9.44 Earth years on a mildly elliptical path at a mean orbital distance of 4.5000 AU.

Eq. Temperature

—

Insolation (S⊕)

0.09

Earth = 1.00

Earth Similarity (ESI)

0.243

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Frensch et al. 2023

Instrument

HARPS Spectrograph

Publication

2023-06

Observation locale

Ground

Discovery cohort

Planets confirmed in 2023 at La Silla Observatory (12 shown).

GJ 367 c · Super-Earth GJ 367 d · Sub-Neptune TOI-544 c · Neptune-like HD 74698 b · Neptune-like HD 75302 b · Gas Giant BD-210397 c · Gas Giant HD 108202 b · Gas Giant HIP 54597 b · Gas Giant HD 135625 b · Gas Giant HD 185283 b · Gas Giant HD 73256 c · Gas Giant BD-210397 b · Gas Giant

Host System: HD 74698

Spectral Class

G-type yellow (Sun-like)

Effective Temperature

5,783 K — hotter than the Sun (5,778 K)

Estimated Age

7.85 Gyr — older than the Sun (4.6 Gyr)

Stellar Radius

1.333 R☉

Stellar Mass

1.039 M☉

Metallicity [Fe/H]

0.07

Extended Stellar Properties

Surface gravity (log g)

4.120 dex

Stellar density

0.637 g/cm³

Rotational v·sin i

2.20 km/s

Rotation period

30.00 days

Activity index (log R'HK)

-5.030

Metallicity ratio

[Fe/H]

Distance

52.06 parsec

Light-years 169.81 ly

V-band magnitude

7.78 mag

Voyager-speed travel 2,994,643 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

19.178 mas

Total Proper Motion

122.539 mas/yr

PM Right Ascension

106.12 mas/yr

PM Declination

61.27 mas/yr

Galactic Cartesian (pc)

x = -0.200 · y = 0.238 · z = -0.950

Equatorial (J2000)

RA 130.07448° · Dec -71.87687°

Galactic ℓ, b

286.036° · -17.864°

Ecliptic λ, β

218.561° · -75.161°

HTM-20 index

419951934