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Reports from Geisei Observatory<June 30, 2000>

• C/1999 S4(LINEAR)
Observation has been interrupted by continuing rainy weather for some time. It began to clear up at midnight on June 29 and LINEAR became visible early in the morning of June 30. The coma was about 60" across and the well-defined tail was seen toward the west. The bright star near the comet was a 7.8th magnitude star in Andromeda. With the 20cm refractor at 60x the comet appeared roughly as bright as this star. This photo was taken with the 60cm reflector with a 10-minute exposure. Its dusty appearance is clear. The total magnitude was estimated to be 7.5 on June 29.8 UT. The next photo will be presented in color.

C/1999 S4(LINEAR)
June 30, 2000
10-minute exposure
60cm reflector at Geisei Observatory

Copyright (C) 2000 Tsutomu Seki.