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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=81002
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ColumnValue  Explain   (UCD)
_RAJ200016 35 52.9530456 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-28 12 57.649885 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195016 32 45.9048948 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-28 06 50.506769 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon351.5348186281 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+12.8081543156 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
81002recno 81002  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 81266  (i) Hipparcos identifier (linked to details from HIP catalogs) (meta.id;meta.main)
Comp   Component(s) (Note 1)   (meta.code.multip)
ClassesIR,UV,X,*  SIMBAD classifications (comma separated) (Note 2)   (src.class)
Gr1   Cluster or Association membership(s) (Note 3)   (meta.code.member)
RAJ2000248.97066417 deg (i) Right ascension (ICRS, Epoch=J1991.25) (pos.eq.ra;meta.main)
e_RAJ2000 0.51 mas Standard error on RA*cos(DEdeg) (stat.error;pos.eq.ra)
DEJ2000-28.21596160 deg (i) Declination (ICRS, Epoch=J1991.25) (pos.eq.dec;meta.main)
e_DEJ2000 0.40 mas Standard error on DE (stat.error;pos.eq.dec)
Plx 6.88 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.53 mas Standard error on Plx (stat.error;pos.parallax)
pmRA -9.60 mas/yr Proper motion in RA*cos(DEdeg) (pos.pm;pos.eq.ra)
e_pmRA 0.40 mas/yr Standard error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE -21.50 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.40 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_pm2   [1/3] Reference for proper motion (Note 5)   (meta.ref;pos.frame)
GLon351.53482129 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat 12.80815449 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 137.13 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist  % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon -22.56 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat -6.76 mas/yr Proper motion in GLat (pos.pm)
X 132.3 pc Heliocentric distance towards Gal. center (pos.distance)
Y -19.7 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z 30.4 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7268 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 15.3 km/s Transverse velocity (phys.veloc)
SpTypeB0IV  Spectral type (MK, HD, or other) (src.spType)
Tc 20   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc4   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV 1.70 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 0.90 km/s Standard error on RV (Note 12)   (stat.error)
q_RVA   [ABCD] Quality flag on RV (Note 13)   (meta.code.qual)
[Fe/H]-0.13 [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]C   [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 0.4 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V -14.9 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W -3.9 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 15.4 km/s Total heliocentric velocity (phys.veloc)
Dmin 136.29 pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin -961 kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.0724   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi 106.5 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 7156 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b 7137 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 518 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L 7118 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin6638 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 7674 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 2.737 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 2.73 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 2.75 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 1.550 mag Apparent magnitude in Johnson U (phot.mag;em.opt.U)
Bmag 2.614 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 2.82 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag  mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag 3.033 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag 3.444 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.214 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag 3.478 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.218 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag 3.705 mag K selected default magnitude (Note 22)   (phot.mag;em.IR.K)
e_Kmag 0.232 mag K total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.K)
2MASS16355295-2812576  2MASS source designation (linked to details from 2MASS-PSC catalog) (Note 22)   (meta.id.cross)
q2MCDD  JHK photometric quality flag (Note 22)   (meta.code.qual;phot)
B-V-0.206 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-0.24 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-2.948 mag Absolute Magnitude of Hpmag (Note 23)   (phot.mag;em.IR.H)
UMag-4.136 mag Absolute Magnitude in Johnson U (Note 23)   (phot.mag;em.opt.U)
BMag-3.07 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag-2.87 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-2.65 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag-2.24 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag-2.21 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag -1.98 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 5428.39 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin 2.81 mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD149438   Henry Draper catalog identifier (meta.id)
CstSco  Constellation membership (meta.code.member)
Atlas1419  Millennium Star Atlas page number (meta.bib.page)
Coords16359s2822  RA, DE in compact format; n = + ; s = - (meta.id)
Name23 Tau Scorpii (Alniyat)  Star name(s) (meta.id)
GrpNameUpper Scorpius  Cluster or Association name(s) (linked to Group characteristics ) (meta.id.parent)
CompID   Reference for Comp (main.dat) (meta.id)
rSpType2009A&A...501..297Z  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]203,309  Reference(s) for [Fe/H] (main.dat) (meta.ref)
  
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