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VizieR

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J/ApJS/143/1/table4 FIRST-APM Source Catalog (McMahon+, 2002)
FIRST-APM Source Catalog (496791 rows)
  recno=370706
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ColumnValue  Explain   (UCD)
_RAJ200015 22 44.98600 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (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.eq.ra)
_DEJ2000+29 46 09.9600 "d:m:s" Declination (FK5, Equinox=J2000.0) (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.eq.dec)
_RAB195015 20 40.76221 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (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.eq.ra)
_DEB1950+29 56 48.1404 "d:m:s" Declination (FK4, Equinox=B1950.0) (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.eq.dec)
_Glon046.57939991 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+56.78214112 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)
370706recno 370706  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ200015 22 44.986 "h:m:s" (i) Radio hour of Right Ascension (J2000) (Note 1)   (pos.eq.ra;meta.main)
DEJ2000+29 46 09.96 "d:m:s" (i) Radio degree of Declination (J2000) (Note 1)   (pos.eq.dec;meta.main)
oRA 1.31 arcsec Right Ascension offset to the optical object (pos.eq.ra;arith.diff)
oDE -0.60 arcsec Declination offset to the optical object (pos.eq.dec;arith.diff)
Sep 1.44 arcsec Radius to the optical object (pos.angDistance)
Eclass 1  APM classification on E (red) plate (Note 2)   (meta.code.class)
Epsf 21.11  APM psf parameter on E (red) plate (Note 3)   (src.class.starGalaxy)
Emag 11.17 mag E (red) plate magnitude (1) (Note 4)   (phot.mag;em.opt.R)
Oclass 1  APM classification on O (blue) plate (Note 2)   (meta.code.class)
Opsf 12.45  APM psf parameter on O (blue) plate (Note 3)   (src.class.starGalaxy)
Omag 10.95 mag O (blue) plate magnitude (1) (Note 4)   (phot.mag;em.opt.B)
O-E -0.23 mag The (O-E) plate color (Note 5)   (phot.color;em.opt.B;em.opt.R)
Plate 1092   Number of POSS-I plate (meta.number)
Fpeak 1.07 mJy FIRST peak radio flux density at 1.4GHz (Note 6)   (phot.flux.density;em.radio.750-1500MHz)
Fint 2.45 mJy FIRST integrated radio flux density (Note 6)   (phot.flux.density;em.radio.750-1500MHz)
Fmaj 8.2 arcsec FIRST source deconvolved major axis (6) (Note 7)   (phys.angSize)
Fmin 4.2 arcsec FIRST source deconvolved minor axis (6) (Note 7)   (phys.angSize)
FPA 43.5 deg FIRST position angle (Note 6)   (pos.posAng)

APMAPM  Link to APM (North) data (meta.ref)
FIRSTFIRST  Link to FIRST data (meta.ref)
  
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