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=314.7238883 +44.2578797, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (314.7238883+44.2578797)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200020 58 53.734005 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+44 15 28.37593 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195020 57 06.243067 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+44 03 46.15348 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon085.459813205 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-01.046973433 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)

ira314.7238883 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+44.2578797 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid2162235658071977984  Gaia source ID (srcid) (meta.id;meta.main)
rag314.7238739 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.7 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 44.2578689 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 0.7 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg3   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 9  Number of images used for mean position (nu) (meta.number)
epu2002.817 yr UCAC epoch (epu) (time.epoch)
pmur -3.1 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 1.1 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -3.2 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 1.1 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag11.231 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag12.220 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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