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=344.8824933 +73.5344169, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (344.8824933+73.5344169)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200022 59 31.791802 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+73 32 03.90500 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195022 57 57.109197 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+73 15 57.57989 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon115.107652018 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+12.386560630 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)

ira344.8824933 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+73.5344169 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid2231836668254686592  Gaia source ID (srcid) (meta.id;meta.main)
rag344.8825744 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 73.5344133 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 0.4 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)
epu2003.786 yr UCAC epoch (epu) (time.epoch)
pmur 7.4 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 13.7 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -1.1 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed13.8 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag16.537 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag16.718 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag16.040 mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag14.685 mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag14.211 mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag14.201 mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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