SIMBAD query result

Please have a look at the "Dictionary of Nomenclature"

Result of query: info cati ClG 2231.0-3800

.

 [Class]      Acronym  (Explanation)   . . . . . . . . . in Simbad, use:
 [ClG]        C (Cluster of G) . . . . . . . . . . . . . ClG HHMM+DD
                                                      or ClG HHMM.m+DD
                                                      or ClG HHMM+DDMM
                                                      or ClG HHMM.m+DDMM
 [ClG]        Cl (Cluster of G)  . . . . . . . . . . . . ClG HHMM+DD
                                                      or ClG HHMM.m+DD
                                                      or ClG HHMM+DDMM
                                                      or ClG HHMM.m+DDMM
 [ClG]        ClG (Cluster of G) . . . . . . . . . . . . ClG HHMM+DD
                                                      or ClG HHMM.m+DD
                                                      or ClG HHMM+DDMM
                                                      or ClG HHMM.m+DDMM
                                                      or ClG JHHMM+DDMM
                                                      or ClG JHHMM.m+DDMM