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V/117A/newcat Geneva-Copenhagen Survey of Solar neighbourhood (Holmberg+, 2007)
Main catalogue recalibrated data (2007) (16682 rows)
  recno=3027
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ColumnValue  Explain   (UCD)
_RAJ200004 40 33.7 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEJ2000-41 51 49 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data) (pos.eq.dec)
_RAB195004 38 56.3 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEB1950-41 57 33 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data) (pos.eq.dec)
_Glon246.1558 deg Galactic longitude (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat-41.4958 deg Galactic latitude (computed by VizieR, not part of the original data) (pos.galactic.lat)
3027recno 3027  Record number within the original table (starting from 1) (meta.record)

HIP 21770   Hipparcos number if available (meta.id;meta.main)
NameHD 29875  Object name (HD,BD,CD or CP) (Note 1)   (meta.id;meta.main)
CompAB  Components included in photometry (Note 2)   (meta.code.multip)
RAJ200004 40 33.7 "h:m:s" Right ascension (ICRF) (pos.eq.ra;meta.main)
DEJ2000-41 51 49 "d:m:s" Declination (ICRF) (pos.eq.dec;meta.main)
logTe 3.843 [K] Effective temperature (phys.temperature.effective)
[Fe/H]-0.08 [Sun] Metallicity (phys.abund.Z)
Dist 20 pc Distance (pos.distance;pos.heliocentric)
VMAG 2.93 mag Absolute magnitude (phys.magAbs)
Age 0.9 Gyr Age, in Gigayears (time.age)
clAge 0.7 Gyr Lower confidence limit on Age (time.age;stat.fit.param)
chAge 1.3 Gyr Upper confidence limit on Age (time.age;stat.fit.param)
UVel 10 km/s Heliocentric space velocity component U (Note 3)   (pos.cartesian.x)
VVel 6 km/s Heliocentric space velocity component V (Note 3)   (pos.cartesian.y)
WVel -10 km/s Heliocentric space velocity component W (Note 3)   (pos.cartesian.z)
fb*  Flag for binaries of all types (Note 3)   (meta.code.multip)
fs   Flag for cool dwarfs south of -26deg (meta.code)
Vmag 4.450 mag Johnson V magnitude (phot.mag;em.opt.V)
b-y 0.211 mag Stromgren b-y colour (phot.color;em.opt.B;em.opt.V)
Hbeta 2.736 mag Stromgren Hbeta index (spect.index;em.line.Hbeta)
E(b-y)  mag Colour excess (Note 5)   (phot.color.excess)
dVMag 0.13 mag Magnitude difference to ZAMS (phot.mag;arith.diff)
frH  Source for the distance (Note 8)   (meta.ref;pos.frame)
fg   Flag for suspected giants (Note 9)   (meta.code)
mass 1.48 solMass Mass, in solar masses (phys.mass)
clmass 1.43 solMass Lower confidence limit on mass (phys.mass)
chmass 1.52 solMass Upper confidence limit on mass (phys.mass)
RVel -0.3 km/s Mean radial velocity (Note 10)   (spect.dopplerVeloc;stat.mean)
meRVel 0.7 km/s Mean error of radial velocity (stat.error;spect.dopplerVeloc)
e_RVel  km/s Standard deviation of RVel measurements (stat.error;spect.dopplerVeloc)
o_RVel    Number of RVel measurements (meta.number)
dT  d Time-span of RVel measurements (time.interval)
P(chi2)    Probability of constant RVel (stat.probability)
fd   Flag for spectroscopic binaries (Note 10)   (meta.code.multip)

q   q indicates that an estimate of the mass ratio is given in table2 (meta.ref.url)

fvL  Source of RVel (Note 11)   (meta.ref;pos.frame)
vsini  km/s Rotational velocity (phys.veloc.rotat)
pmRA -141 mas/a Proper motion in right ascension (Note 4)   (pos.pm;pos.eq.ra)
pmDE -74 mas/a Proper motion in declination (Note 4)   (pos.pm;pos.eq.dec)
e_pm 1 mas/a Standard error of total proper motion (Note 4)   (stat.error)
plx 49.7 mas Hipparcos parallax (pos.parallax.trig)
e_plx 0.5 mas Standard error of parallax (stat.error;pos.parallax)
Rgal 8.006 kpc Galactic radial position (Note 13)   (pos.distance;pos.galactocentric)
zgal-0.013 kpc Galactic vertical position (Note 13)   (pos.distance;pos.cartesian.z)
Rmin 7.77 kpc Perigalactic distance (src.orbital)
Rmax 8.99 kpc Apogalactic distance (src.orbital)
ecc 0.07   Eccentricity of galactic orbit (src.orbital.eccentricity;pos.galactic)
zmax 0.05 kpc Maximum distance from galactic plane (src.orbital)
Notesc  General note (Note 14)   (meta.note)

Tycho-2Tycho-2  Tycho-2 data for this star (meta.ref.url)
SimbadSimbad  ask the Simbad data-base about this object
  
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