The long period bright comet C / 1995 O1 (Hale - Bopp) was discovered on July23, 1995 by astronomers A. Hale and T. Bopp. It will pass the perihelion in eariyApril, 1997. We obtained the CCD photometric data of the co...The long period bright comet C / 1995 O1 (Hale - Bopp) was discovered on July23, 1995 by astronomers A. Hale and T. Bopp. It will pass the perihelion in eariyApril, 1997. We obtained the CCD photometric data of the comet from March toDecember, 1996 by using 1.56m telescope of Sheshan Station of Shanghai Observatory.The observational data have been reduced, and according to our data, the orbitalelements and the perturbational ephemeris of the comet have been calculated. In thispaper the processes of reduction and calculation are stated, and the results areanalysed and discussed.展开更多
This paper briefly describes the small scale splitting of the nucleus of comet Hale Bopp which was observed on March 4,1997 by use of the 200 mm refractor at Purple Mountain Observatory.It is also shown that the separ...This paper briefly describes the small scale splitting of the nucleus of comet Hale Bopp which was observed on March 4,1997 by use of the 200 mm refractor at Purple Mountain Observatory.It is also shown that the separated small fragment of the nucleus has its own jet with a projective length of 5.04×10 3 km,while the maximum projective distance between the two separated nuclei is about 2.19×10 4 km. The data were processed by use of image enhancement technique.展开更多
文摘The long period bright comet C / 1995 O1 (Hale - Bopp) was discovered on July23, 1995 by astronomers A. Hale and T. Bopp. It will pass the perihelion in eariyApril, 1997. We obtained the CCD photometric data of the comet from March toDecember, 1996 by using 1.56m telescope of Sheshan Station of Shanghai Observatory.The observational data have been reduced, and according to our data, the orbitalelements and the perturbational ephemeris of the comet have been calculated. In thispaper the processes of reduction and calculation are stated, and the results areanalysed and discussed.
文摘This paper briefly describes the small scale splitting of the nucleus of comet Hale Bopp which was observed on March 4,1997 by use of the 200 mm refractor at Purple Mountain Observatory.It is also shown that the separated small fragment of the nucleus has its own jet with a projective length of 5.04×10 3 km,while the maximum projective distance between the two separated nuclei is about 2.19×10 4 km. The data were processed by use of image enhancement technique.
