VizieR

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VizieR

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I/340/ucac5 UCAC5 Catalogue (Zacharias+ 2017)
Fifth U.S. Naval Observatory CCD Astrograph Catalog (original column names in green) (107758513 rows)
  -c=283.0029764 +44.2841931, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (283.0029764+44.2841931)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200018 52 00.717364 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+44 17 03.18051 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 50 30.448127 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+44 13 22.11827 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon073.928085486 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+18.468324508 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)

ira283.0029764 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+44.2841931 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid2105343799713595904  Gaia source ID (srcid) (meta.id;meta.main)
rag283.0029333 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.1 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 44.2841117 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 0.1 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg2   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 4  Number of images used for mean position (nu) (meta.number)
epu2003.387 yr UCAC epoch (epu) (time.epoch)
pmur -9.6 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 1.6 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -25.2 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 1.6 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag13.334 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag13.728 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag13.700 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag12.198 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag11.819 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag11.744 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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