Pr0211

Pr0211
Observation data
Epoch J2000      Equinox J2000
Constellation Cancer
Right ascension 08h 42m 11.49887s[1]
Declination +19° 16′ 37.2375″[1]
Apparent magnitude (V) 12.143[2]
Characteristics
Evolutionary stage Main sequence
Spectral type K1V[2] or late G[3]
Apparent magnitude (G) 11.926±0.003[1]
Apparent magnitude (J) 10.660±0.022[2]
Apparent magnitude (H) 10.242±0.019[2]
Apparent magnitude (K) 10.173±0.016[2]
Astrometry
Radial velocity (Rv)35.37±0.42[1] km/s
Proper motion (μ) RA: -36.820 mas/yr[1]
Dec.: -12.384 mas/yr[1]
Parallax (π)5.4387 ± 0.0184 mas[1]
Distance600 ± 2 ly
(183.9 ± 0.6 pc)
Details[4]
Mass0.935±0.013 M☉
Radius0.827±0.012 R☉
Surface gravity (log g)4.51±0.05 cgs
Temperature5300±30 K
Metallicity [Fe/H]0.18±0.02 dex
Rotation7.97 days[5]
Rotational velocity (v sin i)5.1±0.3 km/s
Age578±12 or 790±30 Myr
Other designations
Pr0211, EPIC 211936827, TIC 175291727, 2MASS J08421149+1916373, NGC 2632 JC 278[2]
Database references
SIMBADdata

Pr0211 (sometimes written Pr 0211, also 2MASS J08421149+1916373) 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,[5] with its spin axis at an inclination of 76°±11° to the plane of the sky.[4] Pr0211 hosts two known exoplanets, and was the first multi-planet system to be discovered in an open cluster.[3][4]

Pr0211 forms a binary star system with a K-type main-sequence star known as NGC 2632 JC 280 or 2MASS J08421285+1916040.[6][7][8]

  1. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d e f Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Quinn2012 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Malavolta2016 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Kovacs2014 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Mugrauer2019 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference NASAExoplanetArchive was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference SIMBAD2 was invoked but never defined (see the help page).