Reports from Geisei Observatory<October 4, 1999>

• C/1999 S4(LINEAR), C/1999 S3(LINEAR)
The 60cm telescope captured C/1999 S4(LINEAR). The coma is about 15". The comet is small without a bright tail. The deviation from the IAU's initial provisional orbit is about 15". In July 2000 the comet will come closest to the earth at a distance of 0.3 A.U. with a magnitude being 3 or 4. The diameter will be 5-10' in a disk shape. It will not become a great comet.

CJ99S030 1999 09 30.44028 00 53 56.23 +51 00 21.0 13.6 T 372
CJ99S030 1999 10 03.71042 00 36 06.85 +53 04 52.1 13.8 T 372

CJ99S040 1999 10 03.63611 05 00 05.57 +34 45 43.2 16.8 T 372
CJ99S040 1999 10 03.72170 05 00 01.95 +34 46 07.8 16.8 T 372