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=299.5467203 +40.6819131, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (299.5467203+40.6819131)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200019 58 11.213729 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+40 40 54.93753 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195019 56 27.394112 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+40 32 44.96056 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon076.018599007 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+05.937161886 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)

ira299.5467203 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+40.6819131 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid2075060157111229952  Gaia source ID (srcid) (meta.id;meta.main)
rag299.5467042 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.2 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 40.6818494 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 0.2 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg3   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 2  Number of images used for mean position (nu) (meta.number)
epu2002.708 yr UCAC epoch (epu) (time.epoch)
pmur -3.6 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 6.4 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -18.6 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 6.4 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag15.910 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag16.036 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag  mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag  mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag  mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag  mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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