Observation catalog of C/1989 T1 (Helin-Roman-Alu)

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There are 2 observations of this comet
UserObservation's time (UT)MagnitudeComa diameter(')CondensationTool 
.1989-10-23 19:12:0011.02.5120.3T (100x)View Update
Hasubick W.1989-10-22 18:57:0011.02.9320.3T (51x)View Update