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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=46245
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ColumnValue  Explain   (UCD)
_RAJ200009 27 35.2431928 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-08 39 30.967677 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195009 25 07.7912090 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-08 26 27.279399 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon241.4882337580 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+29.0454300177 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
46245recno 46245  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 46390  (i) Hipparcos identifier (linked to details from HIP catalogs) (meta.id;meta.main)
CompA  Component(s) (Note 1)   (meta.code.multip)
Classes**,*,V*,IR,UV  SIMBAD classifications (comma separated) (Note 2)   (src.class)
Gr    Cluster or Association membership(s) (Note 3)   (meta.code.member)
RAJ2000141.89688204 deg (i) Right ascension (ICRS, Epoch=J1991.25) (pos.eq.ra;meta.main)
e_RAJ2000 0.16 mas Standard error on RA*cos(DEdeg) (stat.error;pos.eq.ra)
DEJ2000-08.65868307 deg (i) Declination (ICRS, Epoch=J1991.25) (pos.eq.dec;meta.main)
e_DEJ2000 0.11 mas Standard error on DE (stat.error;pos.eq.dec)
Plx 18.09 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.18 mas Standard error on Plx (stat.error;pos.parallax)
pmRA -14.40 mas/yr Proper motion in RA*cos(DEdeg) (pos.pm;pos.eq.ra)
e_pmRA 0.30 mas/yr Standard error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE 33.30 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.30 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)
GLon241.48823569 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat 29.04543139 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 55.27 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist 1.0 % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon -35.15 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat 9.00 mas/yr Proper motion in GLat (pos.pm)
X -23.1 pc Heliocentric distance towards Gal. center (pos.distance)
Y -42.5 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z 26.8 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7423 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 9.5 km/s Transverse velocity (phys.veloc)
SpTypeK3IIIa  Spectral type (MK, HD, or other) (src.spType)
Tc 63   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc3   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV -4.70 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 0.10 km/s Standard error on RV (Note 12)   (stat.error)
q_RVA   [ABCD] Quality flag on RV (Note 13)   (meta.code.qual)
[Fe/H]-0.03 [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 -5.6 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V 9.0 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W -0.2 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 10.6 km/s Total heliocentric velocity (phys.veloc)
Dmin 49.55 pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin 2259 kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.2468   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi 11.9 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 9814 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b 9510 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 2422 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L 9216 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin7392 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 12236 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 2.135 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 2.13 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 2.15 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 3.430 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 1.99 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag  mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag 0.771 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag-0.256 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.147 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag-0.990 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.192 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag-1.127 mag K selected default magnitude (Note 22)   (phot.mag;em.IR.K)
e_Kmag 0.208 mag K total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.K)
2MASS09273524-0839308  2MASS source designation (linked to details from 2MASS-PSC catalog) (Note 22)   (meta.id.cross)
q2MBCC  JHK photometric quality flag (Note 22)   (meta.code.qual;phot)
B-V 1.440 mag Johnson B-V color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.000 mag Standard error on B-V (stat.error;phot.color;em.opt.B)
V-I 1.39 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-1.577 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-0.28 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag-1.72 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-2.94 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag-3.97 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag-4.70 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag -4.84 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 1051.53 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin 1.75 mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD 81797   Henry Draper catalog identifier (meta.id)
CstHya  Constellation membership (meta.code.member)
Atlas 806  Millennium Star Atlas page number (meta.bib.page)
Coords09276s0866  RA, DE in compact format; n = + ; s = - (meta.id)
Name30 Alpha Hydrae (Alfard)  Star name(s) (meta.id)
GrpName   Cluster or Association name(s) (linked to Group characteristics ) (meta.id.parent)
CompIDCCDM J09277-0841  Reference for Comp (main.dat) (meta.id)
rSpType1989ApJS...71..245K  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]003,020,029,138,172  Reference(s) for [Fe/H] (main.dat) (meta.ref)
  
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