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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=4426
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ColumnValue  Explain   (UCD)
_RAJ200003 28 20.91812 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+29 47 56.5708 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195003 25 17.20577 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+29 37 36.3926 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon159.16850536 deg Galactic longitude at Epoch=J1950, proper motions taken into account (pos.galactic.lon)
_Glat-21.81761193 deg Galactic latitude at Epoch=J1950, proper motions taken into account (pos.galactic.lat)
4426recno 4426  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 4426  (i) [1/76865] IRS sequential number (Note)   (meta.record)
RAB195003 25 17.205 "h:m:s" (i) Hours RA, equinox=B1950, Epoch=B1950.0 (pos.eq.ra;meta.main)
e_RAB1950 11 ms Mean error in RA at original epoch (stat.error;pos.eq.ra)
w_RAB1950 1.7  Sum of the weights in RA (stat.weight)
DEB1950+29 37 36.39 "d:m:s" (i) Degrees Dec, equinox, epoch B1950.0 (pos.eq.dec;meta.main)
e_DEB1950 8 10mas Mean error in Dec at original epoch (stat.error;pos.eq.dec)
w_DEB1950 2.0  Sum of the weights in DE (stat.weight)
pmRA 0.84 ms/yr RA proper motion, FK4 system (pos.pm;pos.eq.ra)
e_pmRA 0.56 ms/yr Mean error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE -14.0 mas/yr DE proper motion, FK4 system (pos.pm;pos.eq.dec)
e_pmDE 4.2 mas/yr Mean error on pmDE (stat.error;pos.pm;pos.eq.dec)
EpRA1940.506 yr Original epoch of RA (epoch of mean position) (time.epoch)
EpDE1939.656 yr Original epoch of DE (epoch of mean position) (time.epoch)
o_RAB1950 3  Number of positions in RA (meta.number)
o_DEB1950 3  Number of positions in DE (meta.number)
Pmag 9.10 mag [520/1000] Photographic magnitude (phot.mag;em.opt)
SpTF0  Spectral type (src.spType)
BD+29 565  Bonner Durchmusterung number I/122 (meta.id)
CD   Cordoba Durchmusterung number I/114 (meta.id)
CP   Cape Photographic Durchmusterung I/108 (meta.id)
AGK3+003049  AGK3 number I/61 (meta.id)
CPC2   Second Cape Photograpic Catalog I/85 (meta.id)
IRSJJ032820.91+294756.5  IRS number, IRS Jhhmmss.ssSddmmss.s (Note)   (meta.id)
RA200003 28 20.915 "h:m:s" Hours RA, Equinox=J2000, Epoch=J2000 (Note)   (pos.eq.ra)
pmRA2000 0.81 ms/yr Centennial RA proper motion, J2000.0 (pos.pm;pos.eq.ra)
EpRA-J2000-59.494 yr Original epoch - J2000.0 in RA (time.epoch;pos.eq.ra)
DE2000+29 47 56.54 "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-J2000-60.344 yr Original epoch - J2000.0 in DE (time.epoch;pos.eq.dec)

_RA.icrs03 28 20.918 "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+29 47 56.571 "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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