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II/271A/patch2 TASS Mark IV patches photometric catalog, version 2 (Droege+, 2007)
*Properties of objects detected repeatedly during the Mark IV survey of northern sky (V.2) (4353670 rows)
  TASS4=1594943
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ColumnValue  Explain   (UCD)
_RAJ200013 44 22.55 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEJ2000+48 01 43.1 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data) (pos.eq.dec)
_RAB195013 42 21.29 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEB1950+48 16 44.7 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data) (pos.eq.dec)
_Glon100.1669 deg Galactic longitude (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat+66.6925 deg Galactic latitude (computed by VizieR, not part of the original data) (pos.galactic.lat)

TASS4 1594943  Index in Mark IV engineering database (meta.id;meta.main)
o_TASS4 25  Number of good (V,I) measurement pairs (meta.number)
RAJ2000206.09397 deg Mean Right Ascension (J2000.0) (pos.eq.ra;meta.main)
e_RAJ2000 0.00029 deg Standard deviation from mean RA position (stat.error;pos.eq.ra)
DEJ2000+48.02864 deg Mean Declination (J2000.0) (pos.eq.dec;meta.main)
e_DEJ2000 0.00028 deg Standard deviation from mean Dec position (stat.error;pos.eq.dec)
Vmag11.577 mag Interquartile mean of all V-band measurements (Note 5)   (phot.mag;em.opt.V)
e_Vmag 0.067 mag Standard deviation from interquartile mean V (stat.error;phot.mag;em.opt.V)
eVmag 0.034 mag Standard deviation from mean V value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.V)
Imag10.504 mag Interquartile mean of all I-band measurements (Note 5)   (phot.mag;em.opt.I)
e_Imag 0.079 mag Standard deviation from interquartile mean I (stat.error;phot.mag;em.opt.I)
eImag 0.065 mag Standard deviation from mean I value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.I)
dVmag -0.12  Normalized measure of deviation from mean V magnitude in ensemble analysis (Note 2)   (stat.variance)
dImag 0.21  Normalized measure of deviation from mean I magnitude in ensemble analysis (Note 2)   (stat.variance)
WS 0.24  Welch-Stetson variability index (Note 3)   (meta.code;src.var.index)
Proxy 0  Proximity code (Note 4)   (meta.code)

Env    Environment when nearby star(s) exist within 1arcmin (meta.ref.url)
  
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