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=243.0376028 -76.8703897, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (243.0376028-76.8703897)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200016 12 09.016529 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-76 52 13.42476 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195016 05 23.320592 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-76 44 25.04461 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon313.522839583 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-18.336471608 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)

ira243.0376028 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc-76.8703897 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid5780705988172628352  Gaia source ID (srcid) (meta.id;meta.main)
rag243.0372847 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-76.8704467 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)
epu1998.210 yr UCAC epoch (epu) (time.epoch)
pmur -15.5 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 1.3 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -12.2 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 1.3 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag13.931 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag14.396 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag14.140 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag13.329 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag13.194 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag13.074 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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