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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=21367
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ColumnValue  Explain   (UCD)
_RAJ200004 35 55.2390696 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+16 30 33.488463 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195004 33 02.8948631 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+16 24 37.598693 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon180.9714159299 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-20.2481380597 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
21367recno 21367  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 21421  (i) Hipparcos identifier (linked to details from HIP catalogs) (meta.id;meta.main)
CompA  Component(s) (Note 1)   (meta.code.multip)
Classes**,*,PM*,V*,IR,UV  SIMBAD classifications (comma separated) (Note 2)   (src.class)
Gr    Cluster or Association membership(s) (Note 3)   (meta.code.member)
RAJ2000068.98000194 deg (i) Right ascension (ICRS, Epoch=J1991.25) (pos.eq.ra;meta.main)
e_RAJ2000 0.64 mas Standard error on RA*cos(DEdeg) (stat.error;pos.eq.ra)
DEJ2000+16.50976158 deg (i) Declination (ICRS, Epoch=J1991.25) (pos.eq.dec;meta.main)
e_DEJ2000 0.43 mas Standard error on DE (stat.error;pos.eq.dec)
Plx 48.94 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.77 mas Standard error on Plx (stat.error;pos.parallax)
pmRA 63.45 mas/yr Proper motion in RA*cos(DEdeg) (pos.pm;pos.eq.ra)
e_pmRA 0.84 mas/yr Standard error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE -188.94 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.65 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_pm1   [1/3] Reference for proper motion (Note 5)   (meta.ref;pos.frame)
GLon180.97141881 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat-20.24813798 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 20.43 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist 1.6 % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon 187.90 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat -66.47 mas/yr Proper motion in GLat (pos.pm)
X -19.2 pc Heliocentric distance towards Gal. center (pos.distance)
Y -0.3 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z -7.1 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7419 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 19.3 km/s Transverse velocity (phys.veloc)
SpTypeK5III  Spectral type (MK, HD, or other) (src.spType)
Tc 65   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc3   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV 54.26 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 0.03 km/s Standard error on RV (Note 12)   (stat.error)
q_RVA   [ABCD] Quality flag on RV (Note 13)   (meta.code.qual)
[Fe/H]-0.17 [Sun] Iron abundance (phys.abund.Fe)
e_[Fe/H] 9.99 [Sun] Standard error on [Fe/H] (Note 14)   (stat.error;phys.abund.Fe)
q_[Fe/H]B   [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 -48.4 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V -19.0 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W -24.8 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 57.6 km/s Total heliocentric velocity (phys.veloc)
Dmin 6.85 pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin -327 kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.1645   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi-101.3 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 7381 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b 7280 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 1214 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L 7181 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin6167 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 8595 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 1.002 mag Median magnitude in Hipparcos system (phot.mag;em.opt.V)
e_Hpmag 0.003 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 0.99 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 1.02 mag Hpmag at minimum (95th percentile) (phot.mag;em.IR.H)
Per  d Variability period (src.var)
HvarM mag [CDMPRU] Variability type (Note 21)   (meta.code;src.var)
Umag  mag Apparent magnitude in Johnson U (phot.mag;em.opt.U)
Bmag 2.408 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 0.87 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag 0.10 mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag-0.700 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag-2.095 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.194 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag-2.775 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.170 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag-3.044 mag K selected default magnitude (Note 22)   (phot.mag;em.IR.K)
e_Kmag 0.140 mag K total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.K)
2MASS04355524+1630331  2MASS source designation (linked to details from 2MASS-PSC catalog) (Note 22)   (meta.id.cross)
q2MCCB  JHK photometric quality flag (Note 22)   (meta.code.qual;phot)
B-V 1.538 mag Johnson B-V color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.008 mag Standard error on B-V (stat.error;phot.color;em.opt.B)
V-I 1.67 mag Color index in Cousins' system (phot.color;em.opt.V;em.opt.I)
e_V-I 0.02 mag Standard error on V-I (stat.error;phot.color;em.opt.V)
HpMag-0.549 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 0.86 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag-0.68 mag Absolute Magnitude in Johnson V (Note 23)   (phys.magAbs;em.opt.V)
RMag-1.45 mag Absolute Magnitude in R (Note 23)   (phys.magAbs;em.opt.R)
IMag-2.25 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag-3.65 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag-4.33 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag -4.60 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 502.13 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin-1.50 mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD 29139   Henry Draper catalog identifier (meta.id)
CstTau  Constellation membership (meta.code.member)
Atlas 185  Millennium Star Atlas page number (meta.bib.page)
Coords04359n1651  RA, DE in compact format; n = + ; s = - (meta.id)
Name87 Alpha Tauri (Aldebaran)  Star name(s) (meta.id)
GrpName   Cluster or Association name(s) (linked to Group characteristics ) (meta.id.parent)
CompIDCCDM J04359+1631  Reference for Comp (main.dat) (meta.id)
rSpType2006AJ....132..161G  Reference for SpType (main.dat) (Note 24)   (meta.ref;pos.frame)
r_RV582  Reference for RV (main.dat) (meta.ref;pos.frame)
r_[Fe/H]003,016,017,020,101,116,138,172  Reference(s) for [Fe/H] (main.dat) (meta.ref)
  
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