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=291.7004133 +11.3546336, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (291.7004133+11.3546336)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200019 26 48.099511 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+11 21 16.68466 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195019 24 26.763299 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+11 15 10.99849 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon047.064778694 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-02.540872629 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)

ira291.7004133 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+11.3546336 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid4315620591139771904  Gaia source ID (srcid) (meta.id;meta.main)
rag291.7004006 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.5 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 11.3546239 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 0.6 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg2   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu11  Number of images used for mean position (nu) (meta.number)
epu2001.422 yr UCAC epoch (epu) (time.epoch)
pmur -3.3 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 0.9 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -2.6 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 0.9 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag 9.065 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag10.029 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag11.260 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag 5.466 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag 4.544 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag 3.612 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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