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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==208078
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ColumnValue  Explain   (UCD)
_RAJ200016 50 09.83 "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)
_DEJ2000-34 17 35.9 "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)
208078recno 208078  Record number within the original table (starting from 1) (meta.record)

SAO208078   [1/258997] SAO Catalog number (meta.id;meta.main)
delFlag    [D] if star deleted (ignore all fields) (meta.code)
RAB195016 46 55.206 "h:m:s" Hours RA, Equinox=B1950, Epoch=1950.0 (pos.eq.ra;meta.main)
pmRA-0.0492 s/a Annual proper motion in RA, FK4 system (pos.pm;pos.eq.ra)
e_pmRA 2 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)
RA2s57.246 s Seconds portion of RA, original epoch, precessed to B1950 (pos.eq.ra)
e_RA2s 4 10mas Standard deviation of RA2 (stat.error;pos.eq.ra)
EpRA21908.5 a Epoch of RA2 (RA original epoch) (time.epoch)
DEB1950-34 12 15.56 "d:m:s" Degrees Dec, equinox B1950, Epoch=1950.0 (pos.eq.dec;meta.main)
pmDE-0.255 arcsec/a Annual proper motion in Dec, FK4 system (Note 10)   (pos.pm;pos.eq.dec)
e_pmDE 2 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)
DE2s 5.75 arcsec Seconds of Declination, original epoch, precessed to B1950 (pos.eq.dec)
e_DE2s 4 10mas Standard deviation of DE2 (stat.error;pos.eq.dec)
EpDE21911.5 a Epoch of DE2 (Declinaation original epoch) (time.epoch)
e_Pos 8 10mas Standard deviation of position at epoch 1950.0 (stat.error)
Pmag  mag []? Photographic magnitude (phot.mag;em.opt.B)
Vmag 2.4 mag []? Visual magnitude (phot.mag;em.opt.V)
SpTypeK0  Spectral type, '+++' for composite spectra (src.spType)
r_Vmag15  Coded source of visual magnitude (Note 1)   (meta.ref;pos.frame)
r_Num 2  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)
Rem0  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_Cat74  Code for source catalog (Note 7)   (meta.ref;pos.frame)
CatNum 628  Number in source catalog (meta.id)
DMCD-3411285  Durchmusterung identification (Note 9)   (meta.id)
HD151680  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)
GC22640  Boss General Catalog (GC) number (Catalogue I/113) (meta.id)
RA200016 50 09.826 "h:m:s" Hours RA, equinox, epoch J2000.0 (pos.eq.ra)
pmRA2000-0.0492 s/a Annual proper motion in FK5 system (pos.pm;pos.eq.ra)
DE2000-34 17 35.82 "d:m:s" Degrees Dec, equinox, epoch J2000.0 (pos.eq.dec)
pmDE2000-0.257 arcsec/a Annual proper motion in FK5 system (Note 10)   (pos.pm;pos.eq.dec)

_RA.icrs16 50 09.829 "h:m:s" 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-34 17 35.86 "d:m:s" 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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