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=133.3958242 +51.3048867, eq=J2000, rs=2
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Note: UCAC5 document

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (133.3958242+51.3048867)[FK5/J2000], at Epoch of catalog (EPucac) (pos.angDistance)
_RAJ200008 53 35.009161 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+51 18 17.59243 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195008 50 00.199129 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+51 29 40.32208 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon167.336322162 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+39.686487052 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)

ira133.3958242 deg (i) UCAC right ascension (J2000) at epoch "EPucac" on Gaia reference frame (ira) (pos.eq.ra;meta.main)
idc+51.3048867 deg (i) UCAC declination (J2000) at epoch "EPucac" on Gaia reference frame (idc) (pos.eq.dec;meta.main)
srcid1016922567770422400  Gaia source ID (srcid) (meta.id;meta.main)
rag133.3956431 deg Gaia right ascension (ICRS) at epoch 2015.0 (rag) (Note 1)   (pos.eq.ra)
erg 0.1 mas rms uncertainty on RAgaia (erg) (Note 1)   (stat.error)
dcg 51.3048861 deg Gaia declination (ICRS) at epoch 2015.0 (dcg) (Note 1)   (pos.eq.dec)
edg 0.1 mas rms uncertainty on DEgaia (edg) (Note 1)   (stat.error)
flg3   [1/3] TGAS/NOMAD flag (flg) (Note 2)   (meta.code)
nu 1  Number of images used for mean position (nu) (meta.number)
epu2003.104 yr UCAC epoch (epu) (time.epoch)
pmur -34.3 mas/yr UCAC/Gaia proper motion in RA*cosDE (pmur) (pos.pm;pos.eq.ra)
pmer 24.1 mas/yr rms uncertainty on pmRA (pmer) (stat.error;pos.pm;pos.eq.ra)
pmud -0.1 mas/yr UCAC/Gaia proper motion in DE (pmud) (pos.pm;pos.eq.dec)
pmed20.7 mas/yr rms uncertainty on pmDE (pmed) (stat.error;pos.pm;pos.eq.dec)
gmag16.476 mag Gaia G magnitude (gmag) (phot.mag;em.opt.R)
umag16.440 mag Means UCAC model magnitude (umag) (phot.mag;em.opt)
rmag  mag Photographic R magnitude from NOMAD (rmag) (phot.mag;em.opt.R)
jmag  mag 2MASS J magnitude (jmag) (phot.mag;em.IR.J)
hmag  mag 2MASS H magnitude (hmag) (phot.mag;em.IR.H)
kmag  mag 2MASS K magnitude (kmag) (phot.mag;em.IR.K)
  
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