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=1816966
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ColumnValue  Explain   (UCD)
_RAJ200019 48 15.3360 "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+28 29 17.880 "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)
_RAB195019 46 13.8153 "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+28 21 45.936 "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)
_Glon064.4668727 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+01.4641325 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 1816966  (i) Index in Mark IV engineering database (meta.id;meta.main)
o_TASS4 7  Number of good (V,I) measurement pairs (meta.number)
RAJ2000297.06390 deg (i) Mean Right Ascension (J2000.0) (pos.eq.ra;meta.main)
e_RAJ2000 0.00038 deg Standard deviation from mean RA position (stat.error;pos.eq.ra)
DEJ2000+28.48830 deg (i) Mean Declination (J2000.0) (pos.eq.dec;meta.main)
e_DEJ2000 0.00058 deg Standard deviation from mean Dec position (stat.error;pos.eq.dec)
Vmag13.076 mag Interquartile mean of all V-band measurements (Note 5)   (phot.mag;em.opt.V)
e_Vmag 0.296 mag Standard deviation from interquartile mean V (stat.error;phot.mag;em.opt.V)
eVmag 0.220 mag Standard deviation from mean V value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.V)
Imag 8.689 mag Interquartile mean of all I-band measurements (Note 5)   (phot.mag;em.opt.I;stat.mean)
e_Imag 0.316 mag Standard deviation from interquartile mean I (stat.error;phot.mag;em.opt.I)
eImag 0.213 mag Standard deviation from mean I value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.I)
dVmag 2.08  Normalized measure of deviation from mean V magnitude in ensemble analysis (Note 2)   (stat.variance)
dImag 6.95  Normalized measure of deviation from mean I magnitude in ensemble analysis (Note 2)   (stat.variance)
WS 23.70  (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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