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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=8087
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ColumnValue  Explain   (UCD)
_RAJ200001 44 04.0834234 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-15 56 14.926535 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195001 41 44.6578951 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-16 12 00.561360 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon173.1161659494 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-73.4382131504 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
8087recno 8087  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 8102  (i) Hipparcos identifier (linked to details from HIP catalogs) (meta.id;meta.main)
CompA  Component(s) (Note 1)   (meta.code.multip)
Classes**,*,PM*,IR,UV  SIMBAD classifications (comma separated) (Note 2)   (src.class)
Gr    Cluster or Association membership(s) (Note 3)   (meta.code.member)
RAJ2000026.02136459 deg (i) Right ascension (ICRS, Epoch=J1991.25) (pos.eq.ra;meta.main)
e_RAJ2000 0.14 mas Standard error on RA*cos(DEdeg) (stat.error;pos.eq.ra)
DEJ2000-15.93955572 deg (i) Declination (ICRS, Epoch=J1991.25) (pos.eq.dec;meta.main)
e_DEJ2000 0.13 mas Standard error on DE (stat.error;pos.eq.dec)
Plx273.96 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.17 mas Standard error on Plx (stat.error;pos.parallax)
pmRA-1721.05 mas/yr Proper motion in RA*cos(DEdeg) (pos.pm;pos.eq.ra)
e_pmRA 0.18 mas/yr Standard error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE 854.16 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.15 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)
GLon173.11617340 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat-73.43821329 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 3.65 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist 0.1 % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon-1817.59 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat -622.88 mas/yr Proper motion in GLat (pos.pm)
X -1.0 pc Heliocentric distance towards Gal. center (pos.distance)
Y 0.1 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z -3.5 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7401 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 33.2 km/s Transverse velocity (phys.veloc)
SpTypeG8.5V  Spectral type (MK, HD, or other) (src.spType)
Tc 58   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc5   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV -16.68 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 0.05 km/s Standard error on RV (Note 12)   (stat.error)
q_RVA   [ABCD] Quality flag on RV (Note 13)   (meta.code.qual)
[Fe/H]-0.48 [Sun] Iron abundance (phys.abund.Fe)
e_[Fe/H] 0.01 [Sun] Standard error on [Fe/H] (Note 14)   (stat.error;phys.abund.Fe)
q_[Fe/H]A   [ABC] Quality flag on [Fe/H] (Note 15)   (meta.code.qual;phys.abund.Fe)
age 0.3 Gyr Age, in billions of years (time.age)
b_age  Gyr Lower confidence limit on age (time.age;stat.fit.param)
B_age 7.9 Gyr Upper confidence limit on age (time.age;stat.fit.param)
U 18.7 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V 29.4 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W 12.9 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 37.2 km/s Total heliocentric velocity (phys.veloc)
Dmin 3.26 pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin 43 kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.5077   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi 21.7 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 14673 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b12642 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 7449 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L10892 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin7224 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 22123 pc Orbital radius at apocenter (Note 18)   (pos.distance;src.orbital)
Npl0   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 3.630 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 3.62 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 3.64 mag Hpmag at minimum (95th percentile) (phot.mag;em.IR.H)
Per  d Variability period (src.var)
Hvar  mag [CDMPRU] Variability type (Note 21)   (meta.code;src.var)
Umag  mag Apparent magnitude in Johnson U (phot.mag;em.opt.U)
Bmag 4.217 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 3.49 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag  mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag 2.670 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag 2.149 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.310 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag 1.800 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.234 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag 1.794 mag K selected default magnitude (Note 22)   (phot.mag;em.IR.K)
e_Kmag 0.274 mag K total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.K)
2MASS01440402-1556141  2MASS source designation (linked to details from 2MASS-PSC catalog) (Note 22)   (meta.id.cross)
q2MDDD  JHK photometric quality flag (Note 22)   (meta.code.qual;phot)
B-V 0.727 mag Johnson B-V color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.007 mag Standard error on B-V (stat.error;phot.color;em.opt.B)
V-I 0.82 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 5.818 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 6.41 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag 5.68 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 4.86 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag 4.34 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag 3.99 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag 3.98 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 0.52 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin 3.25 mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD 10700   Henry Draper catalog identifier (meta.id)
CstCet  Constellation membership (meta.code.member)
Atlas 337  Millennium Star Atlas page number (meta.bib.page)
Coords01441s1594  RA, DE in compact format; n = + ; s = - (meta.id)
Name52 Tau Ceti  Star name(s) (meta.id)
GrpName   Cluster or Association name(s) (linked to Group characteristics ) (meta.id.parent)
CompIDCCDM J01441-1557  Reference for Comp (main.dat) (meta.id)
rSpType2006AJ....132..161G  Reference for SpType (main.dat) (Note 24)   (meta.ref;pos.frame)
r_RV604,577  Reference for RV (main.dat) (meta.ref;pos.frame)
r_[Fe/H]001,003,014,017,022,023,026,035,039,040,041,046,050,052,056,057,072,073,090,092,101,144,146,149,163  Reference(s) for [Fe/H] (main.dat) (meta.ref)
  
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