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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=17674
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ColumnValue  Explain   (UCD)
_RAJ200003 47 39.6506139 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-23 52 28.835131 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195003 45 30.5286440 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-24 01 42.465420 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon218.3719238753 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-50.3026069394 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
17674recno 17674  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 17717  (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)
RAJ2000056.91508461 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)
DEJ2000-23.87479579 deg (i) Declination (ICRS, Epoch=J1991.25) (pos.eq.dec;meta.main)
e_DEJ2000 0.17 mas Standard error on DE (stat.error;pos.eq.dec)
Plx 13.00 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.28 mas Standard error on Plx (stat.error;pos.parallax)
pmRA 47.51 mas/yr Proper motion in RA*cos(DEdeg) (pos.pm;pos.eq.ra)
e_pmRA 0.17 mas/yr Standard error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE 49.11 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.19 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)
GLon218.37192760 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat-50.30260595 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 76.88 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist 2.2 % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon -35.82 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat 58.18 mas/yr Proper motion in GLat (pos.pm)
X -38.5 pc Heliocentric distance towards Gal. center (pos.distance)
Y -30.5 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z -59.2 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7439 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 24.9 km/s Transverse velocity (phys.veloc)
SpTypeA3Vs  Spectral type (MK, HD, or other) (src.spType)
Tc 33   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc5   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV 28.40 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 0.50 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 -35.1 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V -11.2 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W -8.3 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 37.8 km/s Total heliocentric velocity (phys.veloc)
Dmin 50.69 pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin-1496 kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.1063   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi -68.4 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 7818 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b 7774 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 831 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L 7730 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin6987 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 8649 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 5.266 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 5.26 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 5.28 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 5.315 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 5.24 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag  mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag 5.160 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag 5.139 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.021 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag 5.107 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.027 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag 5.078 mag K selected default magnitude (Note 22)   (phot.mag;em.IR.K)
e_Kmag 0.029 mag K total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.K)
2MASS03473964-2352287  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 0.075 mag Johnson B-V color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.003 mag Standard error on B-V (stat.error;phot.color;em.opt.B)
V-I 0.09 mag Color index in Cousins' system (phot.color;em.opt.V;em.opt.I)
e_V-I 0.00 mag Standard error on V-I (stat.error;phot.color;em.opt.V)
HpMag 0.837 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 0.89 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag 0.81 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 0.73 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag 0.71 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag 0.68 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag 0.65 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 41.42 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin 4.34 mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD 23878   Henry Draper catalog identifier (meta.id)
CstEri  Constellation membership (meta.code.member)
Atlas 355  Millennium Star Atlas page number (meta.bib.page)
Coords03477s2387  RA, DE in compact format; n = + ; s = - (meta.id)
Name28 Tau-7 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)
rSpType1995ApJS...99..135A  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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