RC3 ivo://nasa.heasarc/rc3 NASA/GSFC HEASARC de Vaucouleurs et al. 2026-04-03 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Galaxy This table contains the machine-readable version of the Third Reference Catalogue of Bright Galaxies (RC3) by G. de Vaucouleurs, A. de Vacouleurs, H.G. Corwin, R.J. Buta, P. Fouque, and G. Paturel, originally published by Springer-Verlag in 1991, and including some corrections and additions made by Corwin et al. (1994, AJ, 108, 2128). Only brief parameter descriptions are given in this help file. Detailed information about, for example, how certain quantities were derived, or exactly what a given code means, can be found in the printed version of RC3. This table was created by the HEASARC in March 2007 based on CDS table VII/155/rc3, and replaced an earlier version which did not contain the corrections made by Corwin et al. This is a service provided by NASA HEASARC . https://heasarc.gsfc.nasa.gov/W3Browse/all/rc3.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=rc3& GET text/xml 180 99999 true 25.42916667 -89.33444444 0.0833333333333333 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=rc3 GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_rc3&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GALAXY CATALOG 0.0833333333333333 Optical public rc3 Third Reference Catalog of Bright Galaxies name Galaxy Designation meta.id;meta.main char nullable bv_color_tot_error Mean Error on (B-V)T mag stat.error;phot.color;em.opt.B;em.opt.V double nullable hubble_stage Mean Numerical Index of Stage along the Hubble Sequence in RC2 System src.morph.type double nullable phot_mag Photographic Magnitude, mB mag phot.mag;em.opt.B double nullable ub_color_tot_corr Total U-B Color Corrected for Galactic and Internal Extinction and for Redshift mag phot.color;em.opt.U;em.opt.B double nullable log_ae_error Mean Error on Log Ae log(0.1_arcmin) stat.error;phys.angSize double nullable a_bmag_galactic Galactic Extinction in B, Ag mag phys.absorption double nullable radial_velocity_3k Weighted Mean Velocity Corrected to 3K MBR Reference Frame km/s phys.veloc int nullable h_index_corr Neutral Hydrogen Index, HI mag phot.color;em.opt.B;em.radio double nullable surf_brtness_ae Mean B-Band Surface Brightness within the Effective Aperture mag/arcmin^2 phot.mag.sb;instr.fov double nullable hubble_stage_error Mean Error of Hubble Stage stat.error;src.morph.type double nullable radial_velocity_gsr Weighted Mean of HI & Optical Velocities Corrected to Galactic Standard of Rest km/s phys.veloc int nullable bii Galactic Latitude degree pos.galactic.lat double nullable log_r25 Mean Logarithm of the Ratio of the D25 Isophotal Diameters phys.size;arith.ratio double nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable morph_type Morphological Type src.morph.type char nullable log_d25_flag Flag [?] Indicates Log D25 Very Uncertain meta.code.error;phys.angSize char nullable dec Declination degree pos.eq.dec;meta.main double nullable h_21cm_w20 HI Line Full Width @ 20% (km/s) km/s spect.line.width;em.radio short nullable bv_color_tot Total (Asymptotic) Color Index in Johnson B-V System, (B-V)T mag phot.color;em.opt.B;em.opt.V double nullable far_ir_mag Far-Infrared Magnitude mag phot.mag;em.IR double nullable log_d25 Mean Logarithm of the Apparent Major Isophotal Diameter at muB = 25 B/mag^2 log(0.1_arcmin) phys.angSize double nullable "__z_ra_dec" System unit vector column double nullable bv_color_tot_corr Total B-V Color Corrected for Galactic and Internal Extinction and for Redshift mag phot.color;em.opt.B;em.opt.V double nullable lii Galactic Longitude degree pos.galactic.lon double nullable "__row" System index column char nullable "__x_ra_dec" System unit vector column double nullable ub_color_ae Mean U-B Color Index within the Effective Aperture, (U-B)e mag phot.color;em.opt.U;em.opt.B double nullable alt_name_1 Alternative Designation #1 meta.id char nullable bt_mag_corr Total B Magnitude Corrected for Galactic and Internal Extinction and Redshift mag phot.mag;em.opt.B double nullable h_21cm_mag 21-cm Emission Line Magnitude mag spect.line.intensity double nullable h_21cm_mag_error Mean Error on 21-cm Emission Line Magnitude mag stat.error;spect.line.intensity double nullable h_21cm_radial_vel_error Mean Error on V21 km/s stat.error;phys.veloc;pos.heliocentric short nullable a_bmag_internal Internal B Extinction, Ai mag phys.absorption double nullable radial_velocity Heliocentric Radial Velocity Derived from Optical Observations, Vopt=cz km/s phys.veloc;pos.heliocentric int nullable surf_brtness_ae_error Mean Error on Mean B-Band Surface Brightness within the Effective Aperture mag/arcmin^2 stat.error;phot.mag.sb;instr.fov double nullable "__y_ra_dec" System unit vector column double nullable radial_velocity_error Mean Error on Vopt km/s stat.error;phys.veloc;pos.heliocentric short nullable h_21cm_radial_vel Heliocentric Radial Velocity Derived from Neutral Hydrogen Observations, V21 km/s phys.veloc;pos.heliocentric int nullable log_r25_flag Flag [?] Indicates Log R25 Very Uncertain meta.code.error;phys.size;arith.ratio char nullable h_21cm_w50 HI Line Full Width @ 50% (km/s) km/s spect.line.width;em.radio short nullable bt_mag_error Mean Error on Total (Asymptotic) B Magnitude mag stat.error;phot.mag;em.opt.B double nullable position_angle Position Angle of the Major Axis (degree) degree pos.posAng short nullable log_d25_error Mean Error on Log D25 log(0.1_arcmin) stat.error;phys.angSize double nullable lum_class_error Mean Error on Luminosity Class stat.error;src.class.luminosity double nullable log_r25_error Mean Error on Log R25 stat.error;phys.size;arith.ratio double nullable ub_color_tot_error Mean Error on (U-B)T mag stat.error;phot.color;em.opt.U;em.opt.B double nullable log_do Log of Isophotal Major Diameter Corrected to Face-on and Galactic Extinction log(0.1_arcmin) phys.angSize double nullable h_21cm_w20_error Mean Error on HI Line Full Width @ 20% (km/s) km/s stat.error;spect.line.width;em.radio short nullable bv_color_ae Mean B-V Color Index within the Effective Aperture, (B-V)e mag phot.color;em.opt.B;em.opt.V double nullable ref_morph_type Reference Code for Morphological Type meta.ref;src.morph.type char nullable sg_lat Supergalactic Latitude in RC2 System degree pos.supergalactic.lat double nullable lum_class Luminosity Class src.class.luminosity double nullable ub_color_ae_error Mean Error on (U-B)e mag stat.error;phot.color;em.opt.U;em.opt.B double nullable ub_color_tot Total (Asymptotic) Color Index in Johnson U-B System, (U-B)T mag phot.color;em.opt.U;em.opt.B double nullable log_ae Logarithm of the Apparent Diameter (in 0.1 arcmin) of the Effective Aperture log(0.1_arcmin) phys.angSize double nullable h_21cm_w50_error Mean Error of HI Line Full Width @ 50% (km/s) km/s stat.error;spect.line.width;em.radio short nullable surf_brtness_d25 Mean Surface Brightness within the D25 Isophote mag/arcmin^2 phot.mag.sb double nullable num_lum_class_estimates Number of Luminosity Class Estimates meta.number;phot short nullable pgc_name PGC Designation meta.id char nullable bt_mag Total Asymptotic B Magnitude, BT mag phot.mag;em.opt.B double nullable surf_brtness_d25_error Mean Error on Mean Surface Brightness within the D25 Isophote mag/arcmin^2 stat.error;phot.mag.sb double nullable class Browse Object Classification src.class short nullable sg_lon Supergalactic Longitude in RC2 System degree pos.supergalactic.lon double nullable a_h_21cm HI Line Self-Absorption, A21 mag phys.absorption double nullable phot_mag_error Mean Error on Photographic Magnitude mag stat.error;phot.mag;em.opt.B double nullable bv_color_ae_error Mean Error on (B-V)e mag stat.error;phot.color;em.opt.B;em.opt.V double nullable alt_name_2 Alternative Designation #2 meta.id char nullable bt_mag_flag Flag for Total Asymptotic B Magnitude meta.code;phot.mag;em.opt.B char nullable