C/1995 O1 ( Hale-Bopp )

Japanese version Home page

Total 6,336 html files since Dec. 4, 1995 Updated on December 20, 2007

Profile Discovery Date July 23, 1995 Magnitude 10.5 mag, 10.8 mag Discoverer Alan Hale (Cloudcroft, NM), Thomas Bopp (Stanfield, AZ) Pictures

Orbital Elements Epoch 1997 Mar. 13.0 TT = JDT 2450520.5 T 1997 Apr. 1.1373 TT Nakano q 0.914142 (2000.0) P Q z +0.005395 Peri. 130.5887 -0.1331204 -0.1703043 Node 282.4707 +0.2822928 +0.9378055 e 0.995068 Incl. 89.4300 +0.9500472 -0.3025183 From 3000 observations 1993 Apr. 27-2001 Feb. 17, mean residual 0".8. Nongravitational parameters A1 = +1.27, A2 = +0.1144.

Finding Charts

Magnitudes Graph m1 = -2.0 + 5 log d + 10.0 log r [ ,-215] ( - 1996 Aug. 29) m1 = -0.3 + 5 log d + 7.5 log r [-215, -35] (1996 Aug. 29 - 1997 Feb. 25) m1 = -0.7 + 5 log d + 16.9 log r [ -35, 0] (1997 Feb. 25 - 1997 Apr. 1) m1 = -1.0 + 5 log d + 7.9 log r [ 0, 200] (1997 Apr. 1 - 1997 Oct. 18) m1 = -1.3 + 5 log d + 10.0 log r [ 200, 450] (1997 Oct. 18 - 1998 June 25) m1 = -2.0 + 5 log d + 10.0 log r [ 450, ] (1998 June 25 - )

The orbital elements are calculated by Syuichi Nakano and published at the MPC Ephemerides and Orbital Elements. The charts are made with StellaNavigator Ver.2.0 for Windows (AstroArts / ASCII). The magnitudes graphs are made with Comet for Windows.