C/1999 U4 ( Catalina-Skiff )

Japanese version Home page

Updated on April 3, 2004

Profile Discovery Date October 31, 1999 Magnitude 17.0 mag Discoverer T. B. Spahr (Catalina Sky Survey), B. A. Skiff (Lowell Observatory-LONEOS) Pictures

Orbital Elements Epoch 2001 Oct. 18.0 TT = JDT 2452200.5 T 2001 Oct. 28.4634 TT MPCN q 4.915290 (2000.0) P Q z -0.001554 Peri. 77.5128 -0.1388414 -0.8965960 +/-0.000001 Node 32.2888 +0.2672264 -0.4428024 e 1.007637 Incl. 51.9262 +0.9535791 -0.0064559 From 501 observations 1999 Sept. 18-2002 June 19, mean residual 0".7.

Finding Charts

Magnitudes Graph m1 = 10.0 + 5 log d + 3.5 log r [ ,0] ( - 2001 Oct. 28) m1 = 7.2 + 5 log d + 7.5 log r [0, ] (2001 Oct. 28 - )

The orbital elements are 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.