171P/Spahr (1999)

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Updated on March 18, 2012

Profile Designation 171P/1998 W1 Discovery Date November 16, 1998 Magnitude 16.5 mag Discoverer T. B. Spahr (Catalina Sky Survey) Pictures

Orbital Elements Epoch 1999 Jan. 22.0 TT = JDT 2451200.5 T 1999 Jan. 17.95176 TT MPC q 1.7257685 (2000.0) P Q n 0.14908427 Peri. 346.67719 +0.00719375 -0.93064559 a 3.5224769 Node 101.97326 +0.94832544 -0.10971127 e 0.5100696 Incl. 21.96174 +0.31721775 +0.34908771 P 6.61 From 316 observations 1998 Nov. 13-2012 Mar. 13, mean residual 0".7. Nongravitational parameters A1 = +0.11, A2 = -0.1803.

Finding Charts

Magnitudes Graph m1 = 9.5 + 5 log d + 25 log r

The orbital elements are published on M.P.E.C. 2012-F11. The charts are made with StellaNavigator Ver.2.0 for Windows (AstroArts / ASCII). The magnitudes graphs are made with Comet for Windows.