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I/280B/ascc All-sky Compiled Catalogue of 2.5 million stars (Kharchenko+ 2009)
ASCC-2.5 V3: All-sky Compiled Catalogue of 2.5 million stars, 3rd version (2501313 rows)
  ASCC=872818
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ColumnValue  Explain   (UCD)
_RAJ200015 40 28.4478303 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+18 40 18.005775 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195015 38 13.2782851 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+18 49 54.177287 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon029.8059924127 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lon)
_Glat+50.3541698254 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (pos.galactic.lat)
874016recno 874016  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ2000235.11857796 deg (i) Right Ascension J2000.0, epoch 1991.25 (pos.eq.ra;meta.main)
e_RAJ2000 2.7 mas Standard error in RA*cos(DEdeg) (stat.error)
DEJ2000+18.67162350 deg (i) Declination J2000.0, epoch 1991.25 (pos.eq.dec;meta.main)
e_DEJ2000 4.0 mas Standard error in DEdeg (stat.error;pos.eq.dec)
Plx 4.69 mas Trigonometric parallax (Note)   (pos.parallax.trig)
e_Plx 2.48 mas Standard error in Plx (Note)   (stat.error;pos.parallax)
pmRA -17.67 mas/yr Proper Motion in RA*cos(DE) (pos.pm;pos.eq.ra)
e_pmRA 2.71 mas/yr Standard error in pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE 18.42 mas/yr Proper Motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 3.60 mas/yr Standard error in pmDE (stat.error;pos.pm;pos.eq.dec)
Bmag 7.962 mag B magnitude in Johnson system (Note)   (phot.mag;em.opt.B)
e_Bmag 0.128 mag Standard error on Bmag (Note)   (stat.error;phot.mag;em.opt.B)
Vmag 7.802 mag (i) V magnitude in Johnson system (Note)   (phot.mag;em.opt.V)
e_Vmag 0.108 mag Standard error on Vmag (Note)   (stat.error;phot.mag;em.opt.V)
Jmag 7.133 mag J magnitude from 2MASS (469 values of Kmag, 112 of Hmag, and 3 of Jmag have been converted from 0 to null (unknown) [have the X flag in 2MASS]) (Note)   (phot.mag;em.IR.J)
e_Jmag 0.017 mag Standard error on J magnitude (Note)   (stat.error;phot.mag;em.IR.J)
Hmag 7.111 mag H magnitude from 2MASS (469 values of Kmag, 112 of Hmag, and 3 of Jmag have been converted from 0 to null (unknown) [have the X flag in 2MASS]) (Note)   (phot.mag;em.IR.H)
e_Hmag 0.020 mag Standard error on H magnitude (Note)   (stat.error;phot.mag;em.IR.H)
Kmag 7.054 mag K_s magnitude from 2MASS (469 values of Kmag, 112 of Hmag, and 3 of Jmag have been converted from 0 to null (unknown) [have the X flag in 2MASS]) (Note)   (phot.mag;em.IR.K)
e_Kmag 0.014 mag Standard error on K_s magnitude (Note)   (stat.error;phot.mag;em.IR.K)
Scat  mag Scatter on VT or Hp mag (Note)   (meta.code;src.var)
v1    [GN ] Known variability from GCVS/NSV (Note)   (meta.code;src.var)
v2    [UVW ] Variability from Tycho-1 (Note)   (meta.code;src.var)
v3    [CDMPRU ] Variability type (Note)   (meta.code;src.var)
v4    [VYIXR ] Variability from CMC11 (Note)   (meta.code;src.var)
d12    [A-S ] CCDM component identifier (Note)   (meta.code.multip)
d3A   [A-S ] Component identifier (Note)   (meta.code.multip)
d4    [DRSYZ ] Duplicity from Tycho-1 (Note)   (meta.code.multip)
d5C   [CGOVX ] Double/Multiple Systems flag (Note)   (meta.code.multip)
d6D   [D ] Duplicity flag from PPM (Note)   (meta.code.multip)
SpTypeA2  Spectral type in MK or HD system (Note)   (src.spType)
TYC1    TYC1 number from Tycho-2 (Note)   (meta.id)
TYC2    TYC2 number from Tycho-2 (Note)   (meta.id)
TYC3    TYC3 number from Tycho-2 (Note)   (meta.id)
HIP 76769   Hipparcos number (Note)   (meta.id)
HD139939   HD number (Note)   (meta.id)
DM 1903000   DM number (Note)   (meta.id)
ASCC 872818  (i) [1,2603318] ASCC-2.5 number (Note)   (meta.id;meta.main)

2M2M  Display the 2MASS data (Cutri et al. 2003, Cat. II/246) (meta.ref.url)
  
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