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I/294A/ucac2bss The UCAC2 Bright Star Supplement (Urban+, 2006)
UCAC Bright Star Supplement (430000 rows)
  ID=50044075
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ColumnValue  Explain   (UCD)
_RAJ200016 05 26.2307088 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-19 48 19.632096 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195016 02 31.5102247 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-19 40 12.368459 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon353.1928577338 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+23.5996293608 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)

ID50044075  (i) [50000001,] UCAC2 BSS identifier (Note 1)   (meta.id;meta.main)

ID050044077  Number used in the first edition of UCAC2-BSS (should not be used, see ReadMe history) (meta.id)

RAJ2000241.35929462 deg (i) RA at epoch J2000.0 (ICRS) (Note 2)   (pos.eq.ra;meta.main)
DEJ2000-19.80545336 deg (i) Dec at epoch J2000.0 (ICRS) (Note 2)   (pos.eq.dec;meta.main)
e_RAJ2000 1.28 mas S.e. of RA at central ep. (*cos DE) (Note 3)   (stat.error;pos.eq.ra)
e_DEJ2000 0.96 mas S.e. of Dec at central epoch (Note 3)   (stat.error;pos.eq.dec)
srcD  Source catalog for astrometry (Note 4)   (meta.ref;pos.frame)
EpRAm1991.25 yr Central epoch for mean RA (Note 5)   (time.epoch)
EpDEm1991.25 yr Central epoch for mean DE (Note 5)   (time.epoch)
pmRA -7.17 mas/yr Proper motion in RA (no cos DE) (Note 6)   (pos.pm;pos.eq.ra)
pmDE -24.890 mas/yr Proper motion in DE (Note 6)   (pos.pm;pos.eq.dec)
e_pmRA 1.420 mas/yr S.e. of pmRA (*cos DE) (Note 7)   (stat.error;pos.pm;pos.eq.ra)
e_pmDE 1.07 mas/yr S.e. of pmDE (Note 7)   (stat.error;pos.pm;pos.eq.dec)
q_pmRA    Goodness of fit for pmRA (Note 8)   (meta.code.qual;pos.pm;pos.eq.ra)
q_pmDE    Goodness of fit for pmDE (Note 8)   (meta.code.qual;pos.pm;pos.eq.dec)
q_pmA   [A-D] Quality of proper motion for stars with src='D' (A=good, C=poor, D=uncertain) (meta.code.qual)
B-V  mag Johnson B-V color index (Note 9)   (phot.color;em.opt.B;em.opt.V)
V-I  mag Cousins V-I color index (Note 10)   (phot.color;em.opt.V;em.opt.I)
Hv   Variability type (Note 11)   (meta.note)
Vmag  mag Johnson V magnitude (Note 12)   (phot.mag;em.opt.V)
BTmag 2.528 mag Mean Tycho b magnitude (Note 13)   (phot.mag;em.opt.B)
VTmag 2.608 mag Mean Tycho v magnitude (Note 14)   (phot.mag;em.opt.V)
Hpmag 2.594 mag Median mag in Hipparcos system (Note 15)   (phot.mag;em.opt.V)
v   HIP course variability flag (Note 16)   (meta.code;src.var)
TYC16208   Tycho-2 number (Note 17)   (meta.id)
TYC2 1623   Tycho-2 number (Note 17)   (meta.id)
TYC31   Tycho-2 number (Note 17)   (meta.id)
r_TYC20   Source of Tycho-2 (Note 18)   (meta.ref;pos.frame)
HIP 78820   Hipparcos number (Note 19)   (meta.id)
m_HIPA  HIP component identifier (Note 20)   (meta.code.multip)
2mID    2MASS pts_key star id (Note 21)   (meta.id)
2mJmag  mag 2MASS J magnitude (Note 22)   (phot.mag;em.IR.J)
2mHmag  mag 2MASS H magnitude (Note 22)   (phot.mag;em.IR.H)
2mKsmag  mag 2MASS Ks magnitude (Note 22)   (phot.mag;em.IR.K)
2mflags    2MASS photo. quality flags (Note 23)   (meta.code.qual)
2mcc    2MASS cc_flg (Note 24)   (meta.code)
astflg   Warning flag for astrometry (Note 25)   (meta.code)

Tycho-2Tycho-2  Display the Tycho-2 data (Høg et al., Cat. I/259) (meta.ref.url)
2MASS2MASS  Display the 2MASS data (Cutri et al., Cat. II/246) (meta.ref.url)
  
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