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=217.2468344 +17.3205225, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (217.2468344+17.3205225)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200014 28 59.239494 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+17 19 13.84144 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195014 26 38.051043 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+17 32 33.05848 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon014.482715642 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+65.446884794 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)

ira217.2468344 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+17.3205225 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid1235525996430704384  Gaia source ID (srcid) (meta.id;meta.main)
rag217.2468697 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 5.8 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 17.3206444 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 4.4 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg2   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 1  Number of images used for mean position (nu) (meta.number)
epu2001.240 yr UCAC epoch (epu) (time.epoch)
pmur 8.8 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 6.5 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud 31.9 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed 6.5 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag17.312 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag15.945 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag10.370 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag13.410 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag12.647 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag12.394 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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