| Constell | Integer | [1/88] Constellation numeric code |
| Number | Integer | Star number within the constellation |
| Component | Character | Component identification |
| GCVS | String | Variable star designation |
| NoteFlag | Character | Notes in published catalog |
| RAh | Integer | Hours RA, equinox 1950.0 |
| RAm | Integer | Minutes RA, equinox 1950.0 |
| RAs | Float | Seconds RA, equinox 1950.0 |
| DE | Character | Sign Dec, equinox 1950.0 |
| DEd | Integer | Degrees Dec, equinox 1950.0 |
| DEm | Integer | Minutes Dec, equinox 1950.0 |
| DEs | Integer | Seconds Dec, equinox 1950.0 |
| u_DEs | Character | [:*'] position accuracy flags |
| VarType | String | Type of variability |
| l_magMax | Character | [<>(] '>' if magMax is a faint limit; '<' if magMax is a bright limit; '(' if magMax is an amplitude |
| magMax | Float | Magnitude at maximum brightness |
| u_magMax | Character | Uncertainty flag (:) on magMax |
| f_magMax | Character | ')' if magMax is an amplitude |
| l_magMin | Character | '<' if magMin is a bright limit; '(' if magMin is an amplitude |
| magMin | Float | Minimum magnitude or amplitude |
| u_magMin | Character | Uncertainty flag (:) on magMin |
| n_magMin | Character | Alternative photometric system for magMin |
| f_magMin | Character | ')' if magMin is an amplitude |
| magCode | String | The photometric system for magnitudes |
| Epoch | Float | Epoch for maximum light, Julian days |
| q_Epoch | Character | [:+-] Quality flag on Epoch |
| YearNova | Integer | Year of outburst for nova |
| l_Period | Character | [<>(] Code for upper or lower limits |
| Period | Float | Period of the variable star |
| u_Period | Character | Uncertainty flag (:) on Period |
| n_Period | String | [*/N) ] Uncertainty notes on Period |
| M_m | String | Rising time (M_m) or duration of eclipse (D) |
| u_M_m | Character | Uncertainty flag (:) on M_m |
| n_M_m | Character | [*] Note for eclipsing variable |
| SpType | String | Spectral type |
| Ref1 | String | Reference to a study of the star |
| Ref2 | String | Reference to a chart or photograph |
| Exists | String | Cases of non-existence of the variable etc. |
| RA2000h | Integer | Hours RA, equinox 2000.0 |
| RA2000m | Integer | Minutes RA, equinox 2000.0 |
| RA2000s | Float | Seconds RA, equinox 2000.0 |
| DE2000 | Character | Sign Dec, equinox 2000.0 |
| DE2000d | Integer | Degrees Dec, equinox 2000.0 |
| DE2000m | Integer | Minutes Dec, equinox 2000.0 |
| DE2000s | Integer | Seconds Dec, equinox 2000.0 |