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=039.6977428 +41.6704753, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (039.6977428+41.6704753)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200002 38 47.457073 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+41 40 13.71780 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195002 35 36.165398 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+41 27 18.42857 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon143.565434326 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-16.860087547 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)

ira039.6977428 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+41.6704753 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid 337002890894131072  Gaia source ID (srcid) (meta.id;meta.main)
rag 39.6977658 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 10.1 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 41.6704669 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 4.5 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg2   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 2  Number of images used for mean position (nu) (meta.number)
epu2002.687 yr UCAC epoch (epu) (time.epoch)
pmur 5.0 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 6.0 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -2.5 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 5.9 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag17.028 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag16.123 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag 9.020 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag13.223 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag12.335 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag12.122 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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