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=197.7870036 -42.2328433, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (197.7870036-42.2328433)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200013 11 08.870931 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-42 13 58.28916 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195013 08 17.353927 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-41 58 00.08222 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon306.824923923 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+20.489856157 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)

ira197.7870036 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc-42.2328433 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid6137408416584322816  Gaia source ID (srcid) (meta.id;meta.main)
rag197.7865497 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.9 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg-42.2330056 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 0.8 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg1   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 0  Number of images used for mean position (nu) (meta.number)
epu1998.495 yr UCAC epoch (epu) (time.epoch)
pmur -73.3 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 2.1 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -35.4 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 2.1 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag 5.652 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag 6.221 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag 5.460 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag 4.883 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag 4.762 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag 4.594 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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