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=098.2131706 +19.6741064, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (098.2131706+19.6741064)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200006 32 51.160651 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+19 40 26.78215 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195006 29 53.719565 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+19 42 43.49382 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon193.320126935 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+04.912335382 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)

ira098.2131706 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+19.6741064 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid3372651862647465856  Gaia source ID (srcid) (meta.id;meta.main)
rag 98.2131878 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 3.0 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 19.6741100 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 3.1 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg2   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 3  Number of images used for mean position (nu) (meta.number)
epu2000.986 yr UCAC epoch (epu) (time.epoch)
pmur 4.2 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 4.5 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud 0.9 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 4.6 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag16.326 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag16.425 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag16.300 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag14.909 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag14.589 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag14.437 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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