VII/112/catalogThe RC2 cataloguePlateSource of plate (Table 4)(9)meta.ref;pos.frame;instr.platecharu_DDOClass[*$] '*'=uncertain, '$'=doubtfulmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameRC2 identification (NGC, IC, or anonymous)meta.id;meta.maincharm_NameComponent identification (A, B, C, etc.) (1)meta.code.multipcharRA1950Hours RA, 1950.0pos.eq.ra;meta.mainDE1950Degrees Dec, 1950.0pos.eq.dec;meta.mainGLONGalactic longitudedegpos.galactic.lonSGLONSupergalactic longitudedegpos.supergalactic.lonMTypeRevised morphological Type (Table 2)(9)src.morph.typecharHubbleNumerical Hubble Sequence Index T (Table 3)(9)meta.code;spect.index;obs.sequencecharn_Hubble[*RP$] Remark on Hubble Sequence Index (8)meta.notecharr_MTypeMorphological type author code (Table 5)(9)meta.notecharYerkes_1Yerkes list 1 type and color classes (6)meta.note;phot.colorcharByurkan[1/5]? Nuclear type in Byurkan system (2)meta.noteintnullablen_Byurkan[*$S2-5] Note on Byurkan nucleus type (2)meta.notecharlogD25? Major isophotal diameter, log(D_25)log(0.1arcmin)phys.angSizefloatnullablelogR25? Ratio major to minor diameter, log(R_25)phys.angSize;arith.ratiofloatnullablelogD(0)25? Face-on major isophotal diameterlog(0.1arcmin)phys.angSizefloatnullablelogAe? Effective aperture diameter, log(Ae)log(0.1arcmin)phys.angSize;instr.fovfloatnullableu_logAe[*$] '*'=uncertain, '$'=doubtfulmeta.code.errorcharIDObject identifications (9)meta.idcharprecRAmCentennial precession in RA, minutes0.01min/yrpos.precess;pos.eq.rafloatprecDEmCentennial precession in DE, arcminutes0.01arcmin/yrpos.precess;pos.eq.decfloatGLATGalactic latitudedegpos.galactic.latfloatSGLATSupergalactic latitudedegpos.supergalactic.latfloatDDOTypeDavid Dunlap Obs. (van den Bergh) type (7)meta.notecharDDOClass? David Dunlap Obs. luminosity class (7)src.class.luminosityintnullableWeight]0/5]? Plate material weight (9)stat.weight;phys.atmol.weight;instr.platefloatnullableYerkes_2Yerkes list 2 type and nuclear class (6)src.morph.typecharRC1RC1 nuclear class (9)meta.code.classchare_logD25? Mean error of logD25log(0.1arcmin)stat.errorfloatnullablee_logR25? Mean error of logR25stat.errorfloatnullableD0? Corrected log(D(0)25) for galactic extinc.log(0.1arcmin)arith.zpfloatnullablee_logAe? Mean error of log(Ae)log(0.1arcmin)stat.errorfloatnullableHmag? Harvard photographic magnitude, mHmagphot.mag;em.optfloatnullableu_Hmag[*] if Hmag uncertainmeta.code.errorcharBT? Total asymptotic B magnitude (BT)magphot.mag;em.opt.Bfloatnullablen_BT[*S] Flag on BT, see note (3)meta.notecharSuBr? Mean B surface brightness within Ae (9)mag.arcsec**-2phot.mag.sb;em.opt.BfloatnullableExtinct? Galactic extinction in B system (A_B) (9)magphys.absorption.galfloatnullable(B-V)T? Asymptotic color index (9)magphot.color;em.opt.B;em.opt.Vfloatnullablen_(B-V)T[*] Flag on (B-V)T, see comment (3)meta.notechar(U-B)T? Asymptotic color index (9)magphot.color;em.opt.U;em.opt.Bfloatnullablen_(U-B)T[*] Flag on (U-B)T, see comment (3)meta.notechar(B-V)Ae? Effective aperture color index (9)magphot.color;em.opt.B;em.opt.Vfloatnullablen_(B-V)Ae[*] Flag on (B-V)Ae, see comment (3)meta.notechar(U-B)Ae? Effective aperture color index (9)magphot.color;em.opt.U;em.opt.Bfloatnullablen_(U-B)Ae[*] Flag on (U-B)Ae, see comment (3)meta.notecharB-V? Total B-V color index, corrected (9)magphot.color;em.opt.B;em.opt.VfloatnullablelogS_R? Radio continuum flux near 1.4GHz (21cm)log(10mJy)phot.flux.density;em.radio.750-1500MHzfloatnullablen_logS_R[$+*] Conditional code for logS_R (4)meta.notecharSpIndex1? Spectral index, {alpha}- for {nu} < {nu}_Rspect.indexfloatnullableu_SpIndex1[$*] '*'=uncertain, '$'=very uncertainmeta.code.errorcharlogS_H? Integrated HI flux densitylog(1e-22W.m**-2)phot.flux.density;em.line.HIfloatnullablen_logS_H[$+*] Conditional code for logS_H (4)meta.notecharRIndex? Corrected radio index (RI) (9)magspect.index;em.radiofloatnullableu_RIndex[$] '$' for doubtful RIndex valuemeta.code.errorcharRadVel? Observed Radial velocity (cz)km/sspect.dopplerVelocintnullableu_RadVel[*] '*' if discrepant RadVel valuesmeta.code.errorcharRadVel0? Radial velocity corrected for solar motionkm/sspect.dopplerVelocintnullableAppendix[PST ] Appendices codes, see comment (5)meta.ref;pos.framecharZwickyZwicky identificationsmeta.idcharHmagCorr? Corrected Harvard photog. magnitude (9)magphot.mag;em.opt.Bfloatnullablee_BT? Estimated mean error of BT (9)magstat.error;phot.mag;em.opt.BfloatnullableSuBrAv? Average surface brightness (9)mag.arcsec**-2phot.mag.sbfloatnullableBT0? Corrected face-on magnitude (9)magphot.mag;em.opt.Bfloatnullablee_(B-V)T? Mean error of asymptotic color (9)magstat.errorfloatnullablee_(U-B)T? Mean error of asymptotic color (9)magstat.errorfloatnullablee_(B-V)Ae? Mean error of effective color (9)magstat.errorfloatnullablee_(U-B)Ae? Mean error of effective color (9)magstat.errorfloatnullable(U-B)T0? Total corrected U-B color index (9)phot.color;em.opt.U;em.opt.Bfloatnullableo_SpIndex1? Number of radio continuum measurementsmeta.numberintnullableo_logS_R? Number of radio measurements for logS_Rmeta.numberintnullableo_SpIndex2? Number of radio continuum measurementsmeta.numberintnullableSpIndex2? Spectral index, {alpha}+ for {nu} > {nu}_Rspect.indexfloatnullableu_SpIndex2[$*] '*'=uncertain, '$'=very uncertainmeta.code.errorcharo_logS_H? Number of 21cm emission line observationsmeta.numberintnullableA21? Self-absorption at 21 cm (1.4GHz)magphot.mag;em.radio.750-1500MHzfloatnullableHI? Neutral hydrogen index (9)magphot.colorfloatnullableu_HI[$] '$' if HI is doubtfulmeta.code.errorcharo_RadVelR? Number of radio observations for RadVelmeta.numberintnullableo_RadVelO? Number of optical observations for RadVelmeta.numberintnullablee_RadVel? Radial velocity mean errorkm/sstat.errorintnullableDVelSunSolar motion correction, delta Vkm/sarith.factor;phys.veloc;pos.cartesian.yint_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed