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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=21390
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ColumnValue  Explain   (UCD)
_RAJ200004 36 19.1414412 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-03 21 08.856673 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195004 33 49.0995422 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-03 27 11.619769 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon199.3117336045 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-31.3760589707 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
21390recno 21390  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 21444  (i) Hipparcos identifier (linked to details from HIP catalogs) (meta.id;meta.main)
CompA  Component(s) (Note 1)   (meta.code.multip)
Classes**,*,V*,bC*,IR,UV  SIMBAD classifications (comma separated) (Note 2)   (src.class)
Gr    Cluster or Association membership(s) (Note 3)   (meta.code.member)
RAJ2000069.07975228 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)
DEJ2000-03.35244801 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 4.83 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.19 mas Standard error on Plx (stat.error;pos.parallax)
pmRA 1.53 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 -5.01 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.14 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)
GLon199.31173679 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat-31.37605841 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 206.66 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist 3.9 % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon 5.10 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat -1.18 mas/yr Proper motion in GLat (pos.pm)
X-166.5 pc Heliocentric distance towards Gal. center (pos.distance)
Y -58.3 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z-107.6 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7567 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 5.1 km/s Transverse velocity (phys.veloc)
SpTypeB2IV  Spectral type (MK, HD, or other) (src.spType)
Tc 22   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc4   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV 14.90 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 2.70 km/s Standard error on RV (Note 12)   (stat.error)
q_RVA   [ABCD] Quality flag on RV (Note 13)   (meta.code.qual)
[Fe/H]-0.27 [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 -9.8 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V -8.7 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W -8.7 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 15.8 km/s Total heliocentric velocity (phys.veloc)
Dmin  pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin  kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.0852   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi 19.7 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 8234 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b 8204 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 702 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L 8175 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin7533 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 8936 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 3.871 mag Median magnitude in Hipparcos system (phot.mag;em.opt.V)
e_Hpmag 0.006 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 3.80 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 3.92 mag Hpmag at minimum (95th percentile) (phot.mag;em.IR.H)
Per 0.17 d Variability period (src.var)
HvarP mag [CDMPRU] Variability type (Note 21)   (meta.code;src.var)
Umag 2.820 mag Apparent magnitude in Johnson U (phot.mag;em.opt.U)
Bmag 3.720 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 3.93 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag  mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag 4.101 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag 4.082 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.268 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag 4.581 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.076 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag 4.507 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)
2MASS04361915-0321088  2MASS source designation (linked to details from 2MASS-PSC catalog) (Note 22)   (meta.id.cross)
q2MDEA  JHK photometric quality flag (Note 22)   (meta.code.qual;phot)
B-V-0.210 mag Johnson B-V color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.009 mag Standard error on B-V (stat.error;phot.color;em.opt.B)
V-I-0.20 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-2.705 mag Absolute Magnitude of Hpmag (Note 23)   (phot.mag;em.IR.H)
UMag-3.756 mag Absolute Magnitude in Johnson U (Note 23)   (phot.mag;em.opt.U)
BMag-2.86 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag-2.65 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-2.48 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag-2.49 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag-2.00 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag -2.07 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 4435.01 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin  mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD 29248   Henry Draper catalog identifier (meta.id)
CstEri  Constellation membership (meta.code.member)
Atlas 281  Millennium Star Atlas page number (meta.bib.page)
Coords04363s0335  RA, DE in compact format; n = + ; s = - (meta.id)
Name48 Nu Eridani  Star name(s) (meta.id)
GrpName   Cluster or Association name(s) (linked to Group characteristics ) (meta.id.parent)
CompIDCCDM J04363-0321  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]322  Reference(s) for [Fe/H] (main.dat) (meta.ref)
  
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