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=7423174
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ColumnValue  Explain   (UCD)
_RAJ200009 29 07.0776 "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+49 51 23.724 "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)
_RAB195009 25 44.2257 "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+50 04 31.607 "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)
_Glon168.1848539 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+45.4728580 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 7423174  (i) Index in Mark IV engineering database (meta.id;meta.main)
o_TASS4 19  Number of good (V,I) measurement pairs (meta.number)
RAJ2000142.27949 deg (i) Mean Right Ascension (J2000.0) (pos.eq.ra;meta.main)
e_RAJ2000 0.00034 deg Standard deviation from mean RA position (stat.error;pos.eq.ra)
DEJ2000+49.85659 deg (i) Mean Declination (J2000.0) (pos.eq.dec;meta.main)
e_DEJ2000 0.00074 deg Standard deviation from mean Dec position (stat.error;pos.eq.dec)
Vmag12.600 mag Interquartile mean of all V-band measurements (Note 5)   (phot.mag;em.opt.V)
e_Vmag 0.199 mag Standard deviation from interquartile mean V (stat.error;phot.mag;em.opt.V)
eVmag 0.172 mag Standard deviation from mean V value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.V)
Imag11.835 mag Interquartile mean of all I-band measurements (Note 5)   (phot.mag;em.opt.I;stat.mean)
e_Imag 0.164 mag Standard deviation from interquartile mean I (stat.error;phot.mag;em.opt.I)
eImag 0.150 mag Standard deviation from mean I value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.I)
dVmag 1.24  Normalized measure of deviation from mean V magnitude in ensemble analysis (Note 2)   (stat.variance)
dImag 3.35  Normalized measure of deviation from mean I magnitude in ensemble analysis (Note 2)   (stat.variance)
WS 2.14  (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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