Key parameters at a glance

A radius of 11.60 Earth radii
A mass of 91.79 Earth masses
Surface gravity around 0.68 g
An orbital period of 16.491 days
Semi-major axis 0.1432 AU
Distance from Earth 449.90 light-years
Earth Similarity Index 0.277
Travel time at Voyager 1 speed 7,933,979 years

2 siblings around DMPP-2

DMPP-2 d shares its host star with 2 other confirmed planets. Side-by-side measurements below.

Planet	Type	Radius (R⊕)	Mass (M⊕)	Period (d)	Eq. T (K)	Year
DMPP-2 c	Neptune-like	8.26	51.79	3.168	—	2026
DMPP-2 b	Gas Giant	14.20	171.48	5.203	1,000	2019
DMPP-2 d this	Gas Giant	11.60	91.79	16.491	—	2026

DMPP-2 d Planet Profile

Physical Specs

Radius

11.60 R⊕

Radius (Jupiter)

1.030 R♃

Mass

91.79 M⊕

Mass (Jupiter)

0.289 M♃

Density

0.32 g/cm³

Surface Gravity

0.68 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.277

HZ Position Unknown

Controversial No

Discovery

Year 2026

Method Radial Velocity

Facility Multiple Observatories

Telescope Multiple Telescopes

Size rank in cohort

Rank by radius

#1577of 1771

top 89.0%

This planet

11.60R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

TOI-5205 b 11.60 R⊕ OGLE-2013-BLG-0132L b 11.60 R⊕ TOI-5261 b 11.60 R⊕

Metric	Earth	DMPP-2 d	Jupiter
Radius (R⊕)	1.00	11.60	11.21
Mass (M⊕)	1.00	91.79	317.83
Density (g/cm³)	5.51	0.32	1.33
Surface Gravity (g)	1.00	0.68	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	91.790 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

HD 11231

HIP

HIP 8501

TIC

TIC 32432767

Gaia DR2

Gaia DR2 5017319806652067072

Gaia DR3

Gaia DR3 5017319806652067072

System

DMPP-2

Percentile among Gas Giant cohort

Radius 11.600 R⊕ · percentile 11 / cohort 1771

Mass 91.790 M⊕ · percentile 5 / cohort 1747

Orbital period 16.49 d · percentile 47 / cohort 1533

Distance 137.94 pc · percentile 42 / cohort 1759

ESI 0.277 · percentile 51 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

16.491 days

Semi-major axis

0.1432 AU

Eccentricity

0.100

Inclination

— °

Year Length

A year here lasts approximately 16.49 Earth days (4.5% of a terrestrial year) on a mildly elliptical path at a mean orbital distance of 0.1432 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.277

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Standing et al. 2026

Instrument

Multiple Instruments

Publication

2026-02

Observation locale

Ground

Discovery cohort

Planets confirmed in 2026 at Multiple Observatories (12 shown).

DMPP-6 b · Sub-Neptune TOI-4336 A c · Super-Earth GJ 887 d · Sub-Neptune HD 176986 d · Sub-Neptune GJ 887 e · Rocky Terrestrial DMPP-6 c · Sub-Neptune DMPP-9 b · Sub-Neptune TOI-5789 d · Super-Earth TOI-5789 e · Sub-Neptune HD 85426 c · Sub-Neptune DMPP-2 c · Neptune-like DMPP-7 b · Neptune-like

Host System: DMPP-2

Spectral Class

F-type yellow-white

Effective Temperature

6,500 K — hotter than the Sun (5,778 K)

Estimated Age

2.00 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.780 R☉

Stellar Mass

1.410 M☉

Metallicity [Fe/H]

—

Extended Stellar Properties

Surface gravity (log g)

4.100 dex

Stellar density

0.244 g/cm³

Systemic radial velocity

7.54 km/s

Rotational v·sin i

5.10 km/s

Distance

137.94 parsec

Light-years 449.90 ly

V-band magnitude

8.57 mag

Voyager-speed travel 7,933,979 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

7.221 mas

Total Proper Motion

28.417 mas/yr

PM Right Ascension

-27.38 mas/yr

PM Declination

7.61 mas/yr

Galactic Cartesian (pc)

x = 0.732 · y = 0.380 · z = -0.566

Equatorial (J2000)

RA 27.40773° · Dec -34.45910°

Galactic ℓ, b

246.923° · -75.534°

Ecliptic λ, β

9.547° · -42.075°

HTM-20 index

1639271914