Key parameters at a glance

A radius of 13.00 Earth radii
A mass of 1,334.89 Earth masses
Surface gravity around 7.90 g
An orbital period of 4,343.500 days
Semi-major axis 5.3000 AU
Distance from Earth 69.12 light-years
Earth Similarity Index 0.419
Travel time at Voyager 1 speed 1,218,890 years

brightness_6

Circumbinary planet

RR Cae b orbits a binary-star pair rather than a single host — a minority architecture in the confirmed catalogue.

RR Cae b Planet Profile

Physical Specs

Radius

13.00 R⊕

Radius (Jupiter)

1.160 R♃

Mass

1,334.89 M⊕

Mass (Jupiter)

4.200 M♃

Density

3.34 g/cm³

Surface Gravity

7.90 g (Earth)

Classification

Planet Type

Gas Giant

ESI Score 0.419

HZ Position Unknown

Controversial No

Discovery

Year 2012

Method Eclipse Timing Variations

Facility Leoncito Astronomical Complex

Telescope 2.15 m Jorge Sahade Telescope

Size rank in cohort

Rank by radius

#960of 1771

top 54.2%

This planet

13.00R⊕

Gas Giant median

13.52R⊕

Nearest-size peers

HIP 14810 b 13.00 R⊕ HD 47186 c 13.00 R⊕ WASP-107 c 13.00 R⊕

Metric	Earth	RR Cae b	Jupiter
Radius (R⊕)	1.00	13.00	11.21
Mass (M⊕)	1.00	1,334.89	317.83
Density (g/cm³)	5.51	3.34	1.33
Surface Gravity (g)	1.00	7.90	2.53
Insolation (S⊕)	1.00	—	0.037

Alternative Mass Estimates

Method	Value	Interpretation
Minimum mass (M sin i)	1,334.886 M⊕	Lower bound from radial-velocity fitting.

Star Catalogue Identifiers

TIC

TIC 219244444

Gaia DR2

Gaia DR2 4788741548375134336

Gaia DR3

Gaia DR3 4788741548375134336

System

RR Cae

Percentile among Gas Giant cohort

Radius 13.000 R⊕ · percentile 43 / cohort 1771

Mass 1,334.886 M⊕ · percentile 72 / cohort 1747

Orbital period 4,343.50 d · percentile 91 / cohort 1533

Distance 21.19 pc · percentile 5 / cohort 1759

ESI 0.419 · percentile 91 / cohort 1771

Orbit & Habitability

Orbital Dynamics

Period

4,343.500 days

Semi-major axis

5.3000 AU

Eccentricity

0.000

Inclination

17.60 °

Year Length

A year here lasts about 11.89 Earth years on a nearly circular orbit at a mean orbital distance of 5.3000 AU.

Eq. Temperature

—

Insolation (S⊕)

—

Earth = 1.00

Earth Similarity (ESI)

0.419

0 = alien, 1 = Earth-identical

Discovery Paper

Primary reference

Qian et al. 2012

Instrument

VersArray 1300B CCD Camera

Publication

2012-05

Observation locale

Ground

Host System: RR Cae

Spectral Class

M-type red dwarf

Effective Temperature

3,904 K — cooler than the Sun (5,778 K)

Estimated Age

—

Stellar Radius

0.193 R☉

Stellar Mass

0.440 M☉

Metallicity [Fe/H]

—

Distance

21.19 parsec

Light-years 69.12 ly

V-band magnitude

14.38 mag

Voyager-speed travel 1,218,890 yr

Multi-band Host Photometry — 11 bands

Astrometric Data

Parallax

47.160 mas

Total Proper Motion

534.621 mas/yr

PM Right Ascension

30.02 mas/yr

PM Declination

-533.78 mas/yr

Galactic Cartesian (pc)

x = 0.276 · y = 0.600 · z = -0.751

Equatorial (J2000)

RA 65.27338° · Dec -48.65426°

Galactic ℓ, b

255.712° · -44.502°

Ecliptic λ, β

42.348° · -68.043°

HTM-20 index

1637464687

Similar Worlds

2M0437 b

Gas Giant · M-type red dwarf

Radius 13.00 R⊕ · 419.1 ly

TOI-756 c

Gas Giant · M-type red dwarf

Radius 13.00 R⊕ · 281.1 ly

GJ 463 b

Gas Giant · M-type red dwarf

Radius 13.10 R⊕ · 59.9 ly

KMT-2018-BLG-1990L b

Gas Giant · M-type red dwarf

Radius 12.90 R⊕ · 3,153.9 ly

GJ 676 A b

Gas Giant · M-type red dwarf

Radius 12.80 R⊕ · 52.3 ly

HIP 12961 b

Gas Giant · M-type red dwarf

Radius 13.20 R⊕ · 76.2 ly

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