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VizieR

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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=30877
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ColumnValue  Explain   (UCD)
_RAJ200006 28 52.69066 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-37 20 29.4346 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195006 27 09.50843 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-37 18 27.6305 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon245.44060111 deg Galactic longitude at Epoch=J1950, proper motions taken into account (pos.galactic.lon)
_Glat-20.25034669 deg Galactic latitude at Epoch=J1950, proper motions taken into account (pos.galactic.lat)
30877recno 30877  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

p2   [1,2] Catalog Part number: 1=more reliable, 2=stars with poor observational history (meta.id;meta.main)
IRS 71715  (i) [1/76865] IRS sequential number (Note)   (meta.record)
RAB195006 27 09.508 "h:m:s" (i) Hours RA, equinox=B1950, Epoch=B1950.0 (pos.eq.ra;meta.main)
e_RAB1950  ms Mean error in RA at original epoch (stat.error;pos.eq.ra)
w_RAB1950 1.5  Sum of the weights in RA (stat.weight)
DEB1950-37 18 27.63 "d:m:s" (i) Degrees Dec, equinox, epoch B1950.0 (pos.eq.dec;meta.main)
e_DEB1950  10mas Mean error in Dec at original epoch (stat.error;pos.eq.dec)
w_DEB1950 1.6  Sum of the weights in DE (stat.weight)
pmRA -0.03 ms/yr RA proper motion, FK4 system (pos.pm;pos.eq.ra)
e_pmRA  ms/yr Mean error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE 7.0 mas/yr DE proper motion, FK4 system (pos.pm;pos.eq.dec)
e_pmDE  mas/yr Mean error on pmDE (stat.error;pos.pm;pos.eq.dec)
EpRA1965.788 yr Original epoch of RA (epoch of mean position) (time.epoch)
EpDE1963.966 yr Original epoch of DE (epoch of mean position) (time.epoch)
o_RAB1950 2  Number of positions in RA (meta.number)
o_DEB1950 2  Number of positions in DE (meta.number)
Pmag 8.10 mag [520/1000] Photographic magnitude (phot.mag;em.opt)
SpTM0  Spectral type (src.spType)
BD   Bonner Durchmusterung number I/122 (meta.id)
CD-37 2854  Cordoba Durchmusterung number I/114 (meta.id)
CP-37 949  Cape Photographic Durchmusterung I/108 (meta.id)
AGK3   AGK3 number I/61 (meta.id)
CPC2007101  Second Cape Photograpic Catalog I/85 (meta.id)
IRSJJ062852.70-372029.3  IRS number, IRS Jhhmmss.ssSddmmss.s (Note)   (meta.id)
RA200006 28 52.706 "h:m:s" Hours RA, Equinox=J2000, Epoch=J2000 (Note)   (pos.eq.ra)
pmRA2000 0.58 ms/yr Centennial RA proper motion, J2000.0 (pos.pm;pos.eq.ra)
EpRA-J2000-34.213 yr Original epoch - J2000.0 in RA (time.epoch;pos.eq.ra)
DE2000-37 20 29.37 "d:m:s" Degrees Dec, equinox, epoch J2000.0 (pos.eq.dec)
pmDE2000 8.0 mas/yr Centennial Dec proper motion, J2000.0 (pos.pm;pos.eq.dec)
EpDE-J2000-36.035 yr Original epoch - J2000.0 in DE (time.epoch;pos.eq.dec)

_RA.icrs06 28 52.691 "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-37 20 29.435 "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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