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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=21709
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ColumnValue  Explain   (UCD)
_RAJ200004 40 26.5086803 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-19 40 17.340653 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195004 38 15.1663569 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-19 45 58.246700 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon217.7903612378 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat-37.3617920120 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
21709recno 21709  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 21763  (i) Hipparcos identifier (linked to details from HIP catalogs) (meta.id;meta.main)
CompAB  Component(s) (Note 1)   (meta.code.multip)
Classes**,*,V*,sr*,IR  SIMBAD classifications (comma separated) (Note 2)   (src.class)
Gr    Cluster or Association membership(s) (Note 3)   (meta.code.member)
RAJ2000070.11039166 deg (i) Right ascension (ICRS, Epoch=J1991.25) (pos.eq.ra;meta.main)
e_RAJ2000 0.56 mas Standard error on RA*cos(DEdeg) (stat.error;pos.eq.ra)
DEJ2000-19.67125723 deg (i) Declination (ICRS, Epoch=J1991.25) (pos.eq.dec;meta.main)
e_DEJ2000 0.39 mas Standard error on DE (stat.error;pos.eq.dec)
Plx 8.85 mas Trigonometric parallax (pos.parallax.trig)
e_Plx 0.60 mas Standard error on Plx (stat.error;pos.parallax)
pmRA 23.70 mas/yr Proper motion in RA*cos(DEdeg) (pos.pm;pos.eq.ra)
e_pmRA 0.80 mas/yr Standard error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE -93.10 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 0.80 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)
GLon217.79036445 deg Galactic longitude (Note 6)   (pos.galactic.lon)
GLat-37.36179103 deg Galactic latitude (Note 6)   (pos.galactic.lat)
Dist 112.37 pc Heliocentric distance (Note 7)   (pos.distance)
e_Dist 6.8 % Distance error expressed as percentage (Note 8)   (stat.error)
pmGLon 95.65 mas/yr Proper motion in GLon*cos(GLat) (pos.pm)
pmGLat -8.99 mas/yr Proper motion in GLat (pos.pm)
X -70.6 pc Heliocentric distance towards Gal. center (pos.distance)
Y -54.7 pc Heliocentric distance towards Gal. rotation (pos.distance)
Z -68.2 pc Heliocentric distance towards N. Gal. Pole (pos.distance)
RGal7471 pc Galactocentric distance (Note 9)   (pos.distance;pos.galactocentric)
vT 51.2 km/s Transverse velocity (phys.veloc)
SpTypeM3/4 III  Spectral type (MK, HD, or other) (src.spType)
Tc 73   ]0/140[ Temperature class codified (Note 10)   (src.spType)
Lc3   [1/6] Luminosity class codified (Note 11)   (src.class.luminosity)
RV -32.90 km/s Radial velocity (spect.dopplerVeloc;pos.heliocentric)
e_RV 0.80 km/s Standard error on RV (Note 12)   (stat.error)
q_RVB   [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 54.2 km/s Heliocentric velocity towards Gal. center (spect.dopplerVeloc;pos.heliocentric)
V -22.5 km/s Heliocentric velocity towards Gal. rotation (phys.veloc.rotat;pos.heliocentric)
W 16.2 km/s Heliocentric velocity towards N. Gal. Pole (spect.dopplerVeloc;em.IR.8-15um)
UVW 60.8 km/s Total heliocentric velocity (phys.veloc)
Dmin 94.53 pc Minimum distance at solar encounter (Note 16)   (pos.distance)
Tmin 977 kyr Timing of Dmin, in thousands of years (Note 17)   (time.epoch)
e 0.3285   Total orbital eccentricity (Note 18)   (src.orbital.eccentricity)
phi 100.0 deg [-180/180] Pericenter position angle (Note 18)   (src.orbital.periastron)
a 7898 pc Semi-major axis of orbit (Note 18)   (phys.size.smajAxis)
b 7459 pc Semi-minor axis of orbit (Note 18)   (phys.size.sminAxis)
c 2594 pc Focus-to-center distance of orbit (=a.e) (Note 18)   (pos.distance;src.orbital)
L 7045 deg Semilatus rectum of orbit (Note 18)   (src.orbital)
Rmin5303 pc Orbital radius at pericenter (Note 18)   (pos.distance;src.orbital)
Rmax 10492 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 4.376 mag Median magnitude in Hipparcos system (phot.mag;em.opt.V)
e_Hpmag 0.002 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 4.35 mag Hpmag at maximum (5th percentile) (phot.mag;em.opt.V)
Hpmin 4.41 mag Hpmag at minimum (95th percentile) (phot.mag;em.IR.H)
Per  d Variability period (src.var)
HvarU mag [CDMPRU] Variability type (Note 21)   (meta.code;src.var)
Umag  mag Apparent magnitude in Johnson U (phot.mag;em.opt.U)
Bmag 5.919 mag Apparent magnitude in Johnson B (phot.mag;em.opt.B)
Vmag 4.32 mag Apparent magnitude in Johnson V (phot.mag;em.opt.V)
Rmag  mag Apparent magnitude in R (phot.mag;em.opt.R)
Imag 2.257 mag Apparent magnitude in I (phot.mag;em.opt.I)
Jmag 0.697 mag J selected default magnitude (Note 22)   (phot.mag;em.IR.J)
e_Jmag 0.200 mag J total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.J)
Hmag-0.116 mag H selected default magnitude (Note 22)   (phot.mag;em.IR.H)
e_Hmag 0.238 mag H total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.H)
Kmag-0.387 mag K selected default magnitude (Note 22)   (phot.mag;em.IR.K)
e_Kmag 0.292 mag K total magnitude uncertainty (Note 22)   (stat.error;phot.mag;em.IR.K)
2MASS04402650-1940172  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 1.599 mag Johnson B-V color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.021 mag Standard error on B-V (stat.error;phot.color;em.opt.B)
V-I 2.27 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-0.878 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 0.67 mag Absolute Magnitude in Johnson B (Note 23)   (phys.magAbs;em.opt.B)
VMag-0.93 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-3.00 mag Absolute Magnitude in I (Note 23)   (phys.magAbs;em.opt.I)
JMag-4.56 mag Absolute Magnitude J (Note 23)   (phys.magAbs;em.IR.J)
HMag-5.37 mag Absolute Magnitude H (Note 23)   (phys.magAbs;em.IR.H)
KMag -5.64 mag Absolute Magnitude K (Note 23)   (phys.magAbs;em.IR.K)
Lum 793.85 Lsun Stellar luminosity (Note 23)   (phys.luminosity)
magmin 3.94 mag Apparent magnitude V at Tmin (main.dat) (phot.mag)
HD 29755   Henry Draper catalog identifier (meta.id)
CstEri  Constellation membership (meta.code.member)
Atlas 328  Millennium Star Atlas page number (meta.bib.page)
Coords04404s1967  RA, DE in compact format; n = + ; s = - (meta.id)
Name54 Eridani  Star name(s) (meta.id)
GrpName   Cluster or Association name(s) (linked to Group characteristics ) (meta.id.parent)
CompIDCCDM J04404-1940  Reference for Comp (main.dat) (meta.id)
rSpType1988MSS...C04....0H  Reference for SpType (main.dat) (Note 24)   (meta.ref;pos.frame)
r_RV551  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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