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=339.4157223 +44.7600492, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (339.4157223+44.7600492)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200022 37 39.771274 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+44 45 36.25404 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195022 35 29.440392 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+44 30 01.24072 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon099.358395128 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-11.901919991 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)

ira339.4157223 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+44.7600492 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid1982454477453937664  Gaia source ID (srcid) (meta.id;meta.main)
rag339.4157608 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.3 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 44.7599547 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)
flg2   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 1  Number of images used for mean position (nu) (meta.number)
epu2002.767 yr UCAC epoch (epu) (time.epoch)
pmur 8.0 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 13.6 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -27.8 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed12.9 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag17.236 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag17.455 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag14.820 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag15.816 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag15.172 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag15.073 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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