VizieR

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VizieR

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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=6868811
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ColumnValue  Explain   (UCD)
_RAJ200006 53 26.2152 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+21 43 05.448 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195006 50 26.5032 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+21 46 50.565 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon193.6146909 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+10.1336291 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)

TASS4 6868811  (i) Index in Mark IV engineering database (meta.id;meta.main)
o_TASS4 10  Number of good (V,I) measurement pairs (meta.number)
RAJ2000103.35923 deg (i) Mean Right Ascension (J2000.0) (pos.eq.ra;meta.main)
e_RAJ2000 0.00008 deg Standard deviation from mean RA position (stat.error;pos.eq.ra)
DEJ2000+21.71818 deg (i) Mean Declination (J2000.0) (pos.eq.dec;meta.main)
e_DEJ2000 0.00015 deg Standard deviation from mean Dec position (stat.error;pos.eq.dec)
Vmag 8.353 mag Interquartile mean of all V-band measurements (Note 5)   (phot.mag;em.opt.V)
e_Vmag 0.091 mag Standard deviation from interquartile mean V (stat.error;phot.mag;em.opt.V)
eVmag 0.014 mag Standard deviation from mean V value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.V)
Imag 7.374 mag Interquartile mean of all I-band measurements (Note 5)   (phot.mag;em.opt.I;stat.mean)
e_Imag 0.132 mag Standard deviation from interquartile mean I (stat.error;phot.mag;em.opt.I)
eImag 0.024 mag Standard deviation from mean I value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.I)
dVmag 0.04  Normalized measure of deviation from mean V magnitude in ensemble analysis (Note 2)   (stat.variance)
dImag -1.60  Normalized measure of deviation from mean I magnitude in ensemble analysis (Note 2)   (stat.variance)
WS 0.20  (i) 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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