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VizieR

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I/202/fk5emean The FK5 Extension of the FK4 System (Lattanzi+ 1993)
FK5 Extension on the FK4 B1950.0 (Mean epoch of place) (3117 rows)
  recno=95
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ColumnValue  Explain   (UCD)
_RAJ200002 58 45.63598707 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+39 39 46.1583109 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195002 55 33.24387962 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+39 27 51.0360446 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon148.04276278438 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-16.92043384786 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
95recno 95  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

FK52207  FK5 Extension ID number (meta.id;meta.main)
Vmag 4.69 mag V magnitude (phot.mag;em.opt.V)
RAh043.888582511 deg (i) Right Ascension (B1950.0) in decimal hrs (pos.eq.ra;meta.main)
DEB1950+39.4640843765 deg (i) Declination (B1950.0) in decimal degrees (pos.eq.dec;meta.main)
Epoch_RA 1958.24 yr Mean Epoch of RA in decimal years (time.epoch)
Epoch_DEC 1941.81 yr Mean Epoch of DEC in decimal years (time.epoch)
pmRA 0.203 cs/yr Proper Motion in RA (B1950.0) sec/cy (pos.pm;pos.eq.ra)
pmDE -3.996 carcsec/yr Proper Motion in DEC (B1950.0) arcsec/cy (pos.pm;pos.eq.dec)

_RA.icrs044.690149946 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+39.6628217530 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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