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I/320/spm4 SPM 4.0 Catalog (Girard+, 2011)
Yale/San Juan Southern Proper Motion Catalog 4 (SPM4) (103319647 rows)
  -c=207.8810556 -52.9270149, eq=J2000, rs=2
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Note:

ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (207.8810556-52.9270149)[FK5/J2000], at Epoch=J2000.0 (pos.angDistance)
_RAJ200013 51 31.453344 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-52 55 37.25364 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195013 48 17.108412 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-52 40 46.90737 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon312.030816307 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+08.879947450 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)

SPMID1841852931  (i) Unique identifier (Note 4)   (meta.id;meta.main)
RAJ2000207.8810556 deg (i) Right ascension (ICRS, epoch=2000.0) (pos.eq.ra;meta.main)
e_RAJ2000 82.0 mas Error in right ascension at Epoch (stat.error;pos.eq.ra)
DEJ2000-52.9270149 deg (i) Declination (ICRS, epoch=2000.0) (pos.eq.dec;meta.main)
e_DEJ2000 83.6 mas Error in declination at Epoch (stat.error;pos.eq.dec)
pmRA -7.99 mas/yr Absolute proper motion in RA (*cos(DE)) (pos.pm;pos.eq.ra)
e_pmRA 3.03 mas/yr Error in pmRA at Epoch (stat.error;pos.pm;pos.eq.ra)
pmDE -18.03 mas/yr Absolute proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 3.15 mas/yr Error in pmDE at Epoch (stat.error;pos.pm;pos.eq.dec)
Epoch1982.10 yr [1965/2007] weighted mean epoch of observation (time.epoch;obs)
Ep11968.26 yr [1965/1982] weighted mean 1st-epoch (phys.atmol.wOscStrength;stat.mean)
Ep22007.00 yr [1987/2007] weighted mean 2nd-epoch (Note 2)   (phys.atmol.wOscStrength;stat.mean)
N1 4   [1/20] Number of 1st-epoch plates used (meta.number)
N2 0   [0/14] Number of 2nd-epoch plates used (meta.number)
Nc 0   [0/9] Number of 2nd-epoch CCD frames used (Note 3)   (meta.number)
Bmag18.55 mag (i) Johnson B magnitude estimation (Note 1)   (phot.mag;em.opt.B)
Vmag17.21 mag (i) Johnson V magnitude estimation (Note 1)   (phot.mag;em.opt.V)
ib2   [1/3] source flag for B mag (Note 1)   (meta.ref)
iv2   [1/3] source flag for V mag (Note 1)   (meta.ref)
Jmag14.644 mag (i) 2MASS J magnitude (phot.mag;em.IR.J)
Hmag13.903 mag (i) 2MASS H magnitude (phot.mag;em.IR.H)
Kmag13.776 mag (i) 2MASS Ks magnitude (phot.mag;em.IR.K)

2M2M  Details from 2MASS catalogs (meta.ref.url)

igal0   [0/3] galaxy/extended-source flag (Note 5)   (src.class.starGalaxy)
icat4   [1/7] input catalog source flag (Note 6)   (meta.code.error;meta.table)

AA  Details from astrometric catalogs UCAC / Tycho-2 (meta.ref.url)
  
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