Key parameters at a glance
- A radius of 12.60 Earth radii
- A mass of 2,475.90 Earth masses
- Surface gravity around 15.60 g
- An orbital period of 4,850.000 days
- Semi-major axis 5.5000 AU
- Distance from Earth 595.93 light-years
- Earth Similarity Index 0.417
- Travel time at Voyager 1 speed 10,509,272 years
Context from the literature
Pr0211 is a Sun-like late G or early K-type main-sequence star in the Beehive Cluster, or Praesepe, located 600 light-years away in the constellation Cancer. It is rotationally variable and has a rotation period of 7.97 days, with its spin axis at an inclination of 76°±11° to the plane of the sky. Pr0211 hosts two known exoplanets, and was the first multi-planet system to be discovered in an open cluster.
Excerpted from Wikipedia · full article
1 sibling around Pr0211
Pr0211 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 |
|---|---|---|---|---|---|---|
| Pr0211 b | Gas Giant | 13.40 | 597.52 | 2.146 | — | 2012 |
| Pr0211 c this | Gas Giant | 12.60 | 2,475.90 | 4,850.000 | — | 2016 |
Pr0211 c Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#1179of 1771
top 66.5%
This planet
12.60R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | Pr0211 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 12.60 | 11.21 |
| Mass (M⊕) | 1.00 | 2,475.90 | 317.83 |
| Density (g/cm³) | 5.51 | 6.80 | 1.33 |
| Surface Gravity (g) | 1.00 | 15.60 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 2,475.896 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
TIC
TIC 175291727
Gaia DR2
Gaia DR2 661222279785743616
Gaia DR3
Gaia DR3 661222279785743616
System
Pr0211
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts about 13.28 Earth years on a highly eccentric trajectory at a mean orbital distance of 5.5000 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.417
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Malavolta et al. 2016Instrument
HARPS-N Spectrograph
Publication
2016-04
Observation locale
Ground
Discovery cohort
Planets confirmed in 2016 at Roque de los Muchachos Observatory (4 shown).
Host System: Pr0211
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,300 K — cooler than the Sun (5,778 K)
Estimated Age
0.58 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.827 R☉
Stellar Mass
0.935 M☉
Metallicity [Fe/H]
0.18
Extended Stellar Properties
Surface gravity (log g)
4.510 dex
Stellar density
2.012 g/cm³
Systemic radial velocity
34.29 km/s
Rotational v·sin i
5.10 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
5.444 mas
Total Proper Motion
38.836 mas/yr
PM Right Ascension
-36.76 mas/yr
PM Declination
-12.53 mas/yr
Galactic Cartesian (pc)
x = -0.614 · y = 0.717 · z = 0.330
Equatorial (J2000)
RA 130.54774° · Dec 19.27696°
Galactic ℓ, b
206.528° · 32.744°
Ecliptic λ, β
127.856° · 1.007°
HTM-20 index
-2087330530
Similar Worlds
TIC 279401253 c
Gas Giant · G-type yellow (Sun-like)
Radius 12.60 R⊕ · 931.4 ly
HD 168443 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.60 R⊕ · 129.2 ly
HD 11112 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.60 R⊕ · 144.7 ly
HD 11505 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.60 R⊕ · 127.1 ly
70 Vir b
Gas Giant · G-type yellow (Sun-like)
Radius 12.60 R⊕ · 58.4 ly
HD 222582 b
Gas Giant · G-type yellow (Sun-like)
Radius 12.60 R⊕ · 137.5 ly