CCD Observations catalog of C/1989 T1 (Helin-Roman-Alu)
| User | Observation's time (UT) | Magnitude | Coma diameter(') | Coma degree of condensation | Tool | ||
|---|---|---|---|---|---|---|---|
| No results found. | |||||||
| User | Observation's time (UT) | Magnitude | Coma diameter(') | Coma degree of condensation | Tool | ||
|---|---|---|---|---|---|---|---|
| No results found. | |||||||