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=217.6987747 -08.6463439, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (217.6987747-08.6463439)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200014 30 47.720366 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-08 38 46.79806 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195014 28 12.161751 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-08 25 18.50349 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon340.347083513 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+46.880139458 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)

ira217.6987747 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc-08.6463439 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid6328672140728342528  Gaia source ID (srcid) (meta.id;meta.main)
rag217.6934636 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.2 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg -8.6473244 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)
flg1   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 2  Number of images used for mean position (nu) (meta.number)
epu2000.168 yr UCAC epoch (epu) (time.epoch)
pmur-1274.5 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 1.9 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -238.0 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 1.9 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag 8.604 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag 8.834 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag 8.550 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag 6.615 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag 6.006 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag 5.769 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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