| ID | Cluster identification number |
| Name | Other commonly used cluster name |
| RA | Right ascension (epoch J2000) |
| Dec | Declination (epoch J2000) |
| RSun | Distance from Sun (kiloparsecs) |
| RGC | Distance from Galactic centre (kpc), assuming R_0=8.0 kpc |
| Fe/H | Metallicity [Fe/H] |
| wt | Weight of mean metallicity; essentially the number of independent [Fe/H] measurements averaged together. |
| EB-V | Foreground reddening |
| VHB | V magnitude level of the horizontal branch (or RR Lyraes) |
| (m-M)V | Apparent visual distance modulus |
| Vt | Integrated V magnitude of the cluster |
| MV,t | Absolute visual magnitude (cluster luminosity), M_V,t = V_t - (m-M)V |
| U-B | Integrated colour indices (uncorrected for reddening) |
| B-V | Integrated colour indices (uncorrected for reddening) |
| V-R | Integrated colour indices (uncorrected for reddening) |
| V-I | Integrated colour indices (uncorrected for reddening) |
| spt | Spectral type of the integrated cluster light |
| ellip | Projected ellipticity of isophotes, e = 1-(b/a) |
| vr | Heliocentric radial velocity (km/s) |
| vLSR | Radial velocity relative to Solar neighborhood LSR |
| sigv | Central velocity dispersion sig_v (km/s) |
| c | King-model central concentration, c = log(r_t/r_c); a 'c' denotes a core-collapsed cluster |
| rc | Core radius in arcmin |
| rh | Half-light radius in arcmin |
| μV | Central surface brightness, V magnitudes per square arcsecond |
| ρ0 | Central luminosity density, log_10(Solar luminosities per cubic parsec) |
| lg(tc) | Core relaxation time t(r_c), in log_10(years) |
| lg(th) | Median relaxation time t(r_h), in log_10(years) |