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V/137D/XHIP Extended Hipparcos Compilation (XHIP) (Anderson+, 2012)
XHIP catalog: astrometry, spectrography, space motions, exoplanets, photometry, and references (117955 rows)
  recno=20454
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ColumnValue  Explain   (UCD)
_RAJ200004 23 40.8526812 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-03 44 43.679465 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195004 21 11.3145006 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-03 51 34.853193 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon197.8245592619 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-34.2979411050 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
20454recno 20454  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 20507  (i) Hipparcos identifier (linked to details from HIP catalogs) (meta.id;meta.main)
Comp   Component(s) (Note 1)   (meta.code.multip)
Classes*,IR,UV  SIMBAD classifications (comma separated) (Note 2)   (src.class)
Gr    Cluster or Association membership(s) (Note 3)   (meta.code.member)
RAJ2000065.92033496 deg (i) Right ascension (ICRS, Epoch=J1991.25) (pos.eq.ra;meta.main)
e_RAJ2000 0.21 mas Standard error on RA*cos(DEdeg) (stat.error;pos.eq.ra)
DEJ2000-03.74533240 deg (i) Declination (ICRS, Epoch=J1991.25) (pos.eq.dec;meta.main)
e_DEJ2000 0.19 mas Standard error on DE (stat.error;pos.eq.dec)
Plx 15.60 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.25 mas Standard error on Plx (stat.error;pos.parallax)
pmRA -47.40 mas/yr Proper motion in RA*cos(DEdeg) (pos.pm;pos.eq.ra)
e_pmRA 0.25 mas/yr Standard error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE -55.18 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.26 mas/yr Standard error on pmDE (stat.error;pos.pm;pos.eq.dec)
r_HIP2   [1/2] Reference for Hipparcos astrometry (Note 4)   (meta.ref;pos.frame)
r_pm3   [1/3] Reference for proper motion (Note 5)   (meta.ref;pos.frame)
GLon197.82456256 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat-34.29794058 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 64.08 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist 1.6 % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon 23.41 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat -68.88 mas/yr Proper motion in GLat (pos.pm)
X -50.4 pc Heliocentric distance towards Gal. center (pos.distance)
Y -16.2 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z -36.1 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7450 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 22.1 km/s Transverse velocity (phys.veloc)
SpTypeA2V  Spectral type (MK, HD, or other) (src.spType)
Tc 32   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc5   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV -4.50 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 0.70 km/s Standard error on RV (Note 12)   (stat.error)
q_RVA   [ABCD] Quality flag on RV (Note 13)   (meta.code.qual)
[Fe/H]  [Sun] Iron abundance (phys.abund.Fe)
e_[Fe/H]  [Sun] Standard error on [Fe/H] (Note 14)   (stat.error;phys.abund.Fe)
q_[Fe/H]    [ABC] Quality flag on [Fe/H] (Note 15)   (meta.code.qual;phys.abund.Fe)
age  Gyr Age, in billions of years (time.age)
b_age  Gyr Lower confidence limit on age (time.age;stat.fit.param)
B_age  Gyr Upper confidence limit on age (time.age;stat.fit.param)
U 16.9 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V -2.0 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W -14.8 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 22.6 km/s Total heliocentric velocity (phys.veloc)
Dmin 62.79 pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin 554 kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.2063   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi 50.3 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 8808 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b 8618 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 1817 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L 8433 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin6990 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 10625 pc Orbital radius at apocenter (Note 18)   (pos.distance;src.orbital)
Npl    Number of exoplanets (known in April 2012) (meta.number)
Mpl   Exoplanet discovery method(s) (Note 19)   (meta.code;obs)

SimbadSimbad  ask the Simbad data-base about this object (meta.ref)

Hpmag 5.204 mag Median magnitude in Hipparcos system (phot.mag;em.opt.V)
e_Hpmag 0.001 mag Standard error on Hpmag (stat.error;phot.mag;em.IR.H)
m_Hpmag    [A-Z*-] Reference flag for Hpmag (Note 20)   (meta.code.multip)
Hpmax 5.19 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 5.21 mag Hpmag at minimum (95th percentile) (phot.mag;em.IR.H)
Per  d Variability period (src.var)
HvarD mag [CDMPRU] Variability type (Note 21)   (meta.code;src.var)
Umag  mag Apparent magnitude in Johnson U (phot.mag;em.opt.U)
Bmag 5.242 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 5.17 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag  mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag 5.079 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag 5.085 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.020 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag 5.057 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.018 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag 4.926 mag K selected default magnitude (Note 22)   (phot.mag;em.IR.K)
e_Kmag 0.021 mag K total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.K)
2MASS04234085-0344436  2MASS source designation (linked to details from 2MASS-PSC catalog) (Note 22)   (meta.id.cross)
q2MEAA  JHK photometric quality flag (Note 22)   (meta.code.qual;phot)
B-V 0.072 mag Johnson B-V color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.001 mag Standard error on B-V (stat.error;phot.color;em.opt.B)
V-I 0.10 mag Color index in Cousins' system (phot.color;em.opt.V;em.opt.I)
e_V-I 0.03 mag Standard error on V-I (stat.error;phot.color;em.opt.V)
HpMag 1.170 mag Absolute Magnitude of Hpmag (Note 23)   (phot.mag;em.IR.H)
UMag  mag Absolute Magnitude in Johnson U (Note 23)   (phot.mag;em.opt.U)
BMag 1.21 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag 1.14 mag Absolute Magnitude in Johnson V (Note 23)   (phys.magAbs;em.opt.V)
RMag  mag Absolute Magnitude in R (Note 23)   (phys.magAbs;em.opt.R)
IMag 1.05 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag 1.05 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag 1.02 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag 0.89 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 30.70 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin 5.13 mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD 27861   Henry Draper catalog identifier (meta.id)
CstEri  Constellation membership (meta.code.member)
Atlas 281  Millennium Star Atlas page number (meta.bib.page)
Coords04237s0375  RA, DE in compact format; n = + ; s = - (meta.id)
Name42 Xi Eridani  Star name(s) (meta.id)
GrpName   Cluster or Association name(s) (linked to Group characteristics ) (meta.id.parent)
CompID   Reference for Comp (main.dat) (meta.id)
rSpType2001A&A...373..625P  Reference for SpType (main.dat) (Note 24)   (meta.ref;pos.frame)
r_RV564  Reference for RV (main.dat) (meta.ref;pos.frame)
r_[Fe/H]   Reference(s) for [Fe/H] (main.dat) (meta.ref)
  
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