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I/131A/sao SAO Star Catalog J2000 (SAO Staff 1966; USNO, ADC 1990)
The SAO J2000.0 catalogue (258997 rows)
  SAO==160474
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ColumnValue  Explain   (UCD)
_RAJ200017 20 34.22 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEJ2000-19 19 57.6 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
160474recno 160474  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SAO160474  (i) [1/258997] SAO Catalog number (meta.id;meta.main)
delFlag    [D] if star deleted (ignore all fields) (meta.code)
RAB195017 17 37.942 "h:m:s" (i) Hours RA, Equinox=B1950, Epoch=1950.0 (pos.eq.ra;meta.main)
pmRA-0.0108 s/a Annual proper motion in RA, FK4 system (pos.pm;pos.eq.ra)
e_pmRA10 mas/a Standard deviation in pmRA (stat.error;pos.pm;pos.eq.ra)
RA2mf    [±] '+', add 1, or '-', substract 1, RA minute: indication that the minutes of time associated with the seconds portion RA2 must be increased or decreased by 1 (meta.note)
RA2s38.454 s Seconds portion of RA, original epoch, precessed to B1950 (pos.eq.ra)
e_RA2s15 10mas Standard deviation of RA2 (stat.error;pos.eq.ra)
EpRA21902.4 a Epoch of RA2 (RA original epoch) (time.epoch)
DEB1950-19 16 54.56 "d:m:s" (i) Degrees Dec, equinox B1950, Epoch=1950.0 (pos.eq.dec;meta.main)
pmDE-0.103 arcsec/a Annual proper motion in Dec, FK4 system (Note 10)   (pos.pm;pos.eq.dec)
e_pmDE12 mas/a Standard deviation of Dec proper motion (stat.error;pos.pm;pos.eq.dec)
DE2mf    [±] '+', add 1, or '-', substract 1: Indication that the arcminutes associated with DE2 must be increased or decreased by 1 (meta.note)
DE2s49.70 arcsec Seconds of Declination, original epoch, precessed to B1950 (pos.eq.dec)
e_DE2s14 10mas Standard deviation of DE2 (stat.error;pos.eq.dec)
EpDE21903.0 a Epoch of DE2 (Declinaation original epoch) (time.epoch)
e_Pos 55 10mas Standard deviation of position at epoch 1950.0 (stat.error)
Pmag  mag []? Photographic magnitude (phot.mag;em.opt.B)
Vmag 6.5 mag []? Visual magnitude (phot.mag;em.opt.V)
SpTypeG0  Spectral type, '+++' for composite spectra (src.spType)
r_Vmag14  Coded source of visual magnitude (Note 1)   (meta.ref;pos.frame)
r_Num 1  Coded source of star number and footnotes (Note 2)   (meta.ref;pos.frame)
r_Pmag0  Coded source of photographic magnitude (Note 3)   (meta.ref;pos.frame)
r_pmRA1  Coded source of proper motions (Note 4)   (meta.ref;pos.pm;pos.eq.ra)
r_SpType0  Coded source of spectral type (Note 5)   (meta.ref;pos.frame)
Rem2  Coded remarks duplicity and variability (Note 6)   (meta.code;src.var)
a_Vmag0  Accuracy of V: 0 = 2 decimals, 1=1 decimal (meta.code.qual)
a_Pmag0  Accuracy of Ptg: 0 = 2 decimals, 1=1 decimal (meta.code.qual)
r_Cat70  Code for source catalog (Note 7)   (meta.ref;pos.frame)
CatNum23420  Number in source catalog (meta.id)
DMBD-19 4605  Durchmusterung identification (Note 9)   (meta.id)
HD156846  Henry Draper Catalog (HD or HDE) number (A6) (Catalogue III/135) (meta.id)
m_HD0  HD component and multiple code (Note 8)   (meta.code.multip)
GC23420  Boss General Catalog (GC) number (Catalogue I/113) (meta.id)
RA200017 20 34.229 "h:m:s" Hours RA, equinox, epoch J2000.0 (pos.eq.ra)
pmRA2000-0.0107 s/a Annual proper motion in FK5 system (pos.pm;pos.eq.ra)
DE2000-19 19 57.55 "d:m:s" Degrees Dec, equinox, epoch J2000.0 (pos.eq.dec)
pmDE2000-0.102 arcsec/a Annual proper motion in FK5 system (Note 10)   (pos.pm;pos.eq.dec)

_RA.icrs17 20 34.225 "h:m:s" (i) Right ascension (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DE.icrs-19 19 57.62 "d:m:s" (i) Declination (ICRS) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
  
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