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I/172/irs International Reference Stars (IRS) (Corbin 1991)
International Reference Stars (IRS), parts 1 (more reliable) and 2 (less reliable) (36027 rows)
  recno=7231
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ColumnValue  Explain   (UCD)
_RAJ200005 45 01.28112 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+12 53 17.7372 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195005 42 12.37371 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+12 52 07.0003 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon193.71972375 deg Galactic longitude at Epoch=J1950, proper motions taken into account (pos.galactic.lon)
_Glat -8.40678986 deg Galactic latitude at Epoch=J1950, proper motions taken into account (pos.galactic.lat)
7231recno 7231  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

p1   [1,2] Catalog Part number: 1=more reliable, 2=stars with poor observational history (meta.id;meta.main)
IRS 7231  (i) [1/76865] IRS sequential number (Note)   (meta.record)
RAB195005 42 12.373 "h:m:s" (i) Hours RA, equinox=B1950, Epoch=B1950.0 (pos.eq.ra;meta.main)
e_RAB1950 7 ms Mean error in RA at original epoch (stat.error;pos.eq.ra)
w_RAB1950 1.9  Sum of the weights in RA (stat.weight)
DEB1950+12 52 07.00 "d:m:s" (i) Degrees Dec, equinox, epoch B1950.0 (pos.eq.dec;meta.main)
e_DEB1950 6 10mas Mean error in Dec at original epoch (stat.error;pos.eq.dec)
w_DEB1950 2.2  Sum of the weights in DE (stat.weight)
pmRA -1.43 ms/yr RA proper motion, FK4 system (pos.pm;pos.eq.ra)
e_pmRA 0.40 ms/yr Mean error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE -17.2 mas/yr DE proper motion, FK4 system (pos.pm;pos.eq.dec)
e_pmDE 2.8 mas/yr Mean error on pmDE (stat.error;pos.pm;pos.eq.dec)
EpRA1945.622 yr Original epoch of RA (epoch of mean position) (time.epoch)
EpDE1941.912 yr Original epoch of DE (epoch of mean position) (time.epoch)
o_RAB1950 7  Number of positions in RA (meta.number)
o_DEB1950 7  Number of positions in DE (meta.number)
Pmag 6.70 mag [520/1000] Photographic magnitude (phot.mag;em.opt)
SpTA3  Spectral type (src.spType)
BD+12 884  Bonner Durchmusterung number I/122 (meta.id)
CD   Cordoba Durchmusterung number I/114 (meta.id)
CP   Cape Photographic Durchmusterung I/108 (meta.id)
AGK3+005130  AGK3 number I/61 (meta.id)
CPC2   Second Cape Photograpic Catalog I/85 (meta.id)
IRSJJ054501.27+125317.7  IRS number, IRS Jhhmmss.ssSddmmss.s (Note)   (meta.id)
RA200005 45 01.279 "h:m:s" Hours RA, Equinox=J2000, Epoch=J2000 (Note)   (pos.eq.ra)
pmRA2000 -1.37 ms/yr Centennial RA proper motion, J2000.0 (pos.pm;pos.eq.ra)
EpRA-J2000-54.378 yr Original epoch - J2000.0 in RA (time.epoch;pos.eq.ra)
DE2000+12 53 17.75 "d:m:s" Degrees Dec, equinox, epoch J2000.0 (pos.eq.dec)
pmDE2000 -16.9 mas/yr Centennial Dec proper motion, J2000.0 (pos.pm;pos.eq.dec)
EpDE-J2000-58.088 yr Original epoch - J2000.0 in DE (time.epoch;pos.eq.dec)

_RA.icrs05 45 01.281 "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+12 53 17.737 "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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