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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=47284
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ColumnValue  Explain   (UCD)
_RAJ200009 39 51.3614627 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-01 08 34.113488 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195009 37 18.1562041 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-00 54 53.602612 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon236.4892668500 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+35.9805599249 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
47284recno 47284  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 47431  (i) Hipparcos identifier (linked to details from HIP catalogs) (meta.id;meta.main)
Comp   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)
RAJ2000144.96389186 deg (i) Right ascension (ICRS, Epoch=J1991.25) (pos.eq.ra;meta.main)
e_RAJ2000 0.13 mas Standard error on RA*cos(DEdeg) (stat.error;pos.eq.ra)
DEJ2000-01.14265766 deg (i) Declination (ICRS, Epoch=J1991.25) (pos.eq.dec;meta.main)
e_DEJ2000 0.09 mas Standard error on DE (stat.error;pos.eq.dec)
Plx 12.39 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.14 mas Standard error on Plx (stat.error;pos.parallax)
pmRA 46.99 mas/yr Proper motion in RA*cos(DEdeg) (pos.pm;pos.eq.ra)
e_pmRA 0.14 mas/yr Standard error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE -62.39 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.10 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)
GLon236.48926858 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat 35.98056123 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 80.70 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist 1.1 % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon 78.07 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat 2.28 mas/yr Proper motion in GLat (pos.pm)
X -36.1 pc Heliocentric distance towards Gal. center (pos.distance)
Y -54.4 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z 47.4 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7436 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 29.9 km/s Transverse velocity (phys.veloc)
SpTypeK2 III  Spectral type (MK, HD, or other) (src.spType)
Tc 62   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc3   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV 23.30 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 0.80 km/s Standard error on RV (Note 12)   (stat.error)
q_RVA   [ABCD] Quality flag on RV (Note 13)   (meta.code.qual)
[Fe/H]-0.09 [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 14.8 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V -31.8 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W 14.4 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 37.9 km/s Total heliocentric velocity (phys.veloc)
Dmin 63.64 pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin-1281 kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.1951   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi 137.4 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 6620 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b 6493 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 1292 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L 6368 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin5328 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 7912 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 4.052 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 4.04 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 4.06 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 5.213 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 3.90 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag  mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag 2.761 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag 1.680 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.292 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag 0.953 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.240 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag 0.874 mag K selected default magnitude (Note 22)   (phot.mag;em.IR.K)
e_Kmag 0.260 mag K total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.K)
2MASS09395135-0108341  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 1.313 mag Johnson B-V color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.025 mag Standard error on B-V (stat.error;phot.color;em.opt.B)
V-I 1.29 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-0.482 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 0.68 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag-0.63 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-1.77 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag-2.85 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag-3.58 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag -3.66 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 310.54 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin 3.38 mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD 83618   Henry Draper catalog identifier (meta.id)
CstHya  Constellation membership (meta.code.member)
Atlas 782  Millennium Star Atlas page number (meta.bib.page)
Coords09399s0114  RA, DE in compact format; n = + ; s = - (meta.id)
Name35 Iota Hydrae  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)
rSpType1999MSS...C05....0H  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]003,020,138  Reference(s) for [Fe/H] (main.dat) (meta.ref)
  
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