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=017.1764469 +70.2580753, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (017.1764469+70.2580753)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200001 08 42.350064 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+70 15 29.07370 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195001 05 15.381114 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+69 59 29.66538 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon124.401260530 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+07.435606975 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)

ira017.1764469 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+70.2580753 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid 533211806022654208  Gaia source ID (srcid) (meta.id;meta.main)
rag 17.1764117 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.4 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 70.2580731 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 0.3 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg2   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 4  Number of images used for mean position (nu) (meta.number)
epu2003.744 yr UCAC epoch (epu) (time.epoch)
pmur -3.8 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 1.5 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -0.7 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 1.5 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag10.749 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag11.786 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag10.980 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag 7.115 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag 5.825 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag 5.118 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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