Last updated 2-Aug-2000
After 3rd opposition:
1997 YC8 Epoch 2000 Sept. 13.0 TT = JDT 2451800.5 Spahr M 0.29175 (2000.0) P Q n 0.25490511 Peri. 126.14178 +0.76668718 +0.64142052 a 2.4634875 Node 194.03058 -0.61968081 +0.72801128 e 0.0987022 Incl. 6.57441 -0.16788827 +0.24203159 P 3.87 H 15.1 G 0.15 U 4 From 19 observations at 3 oppositions, 1997-2000, mean residual 0".69. Orbital elements from MPEC 2000-P02.
After 2nd opposition:
1997 YC8 Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Doppler M 258.66496 (2000.0) P Q n 0.25478350 Peri. 125.86838 +0.76360750 +0.64508370 a 2.4642713 Node 194.02969 -0.62316208 +0.72503943 e 0.0988866 Incl. 6.57527 -0.16903434 +0.24121532 P 3.87 H 15.2 G 0.15 U 6 From 15 observations at 2 oppositions, 1997-1999, mean residual 0".82. Orbital elements from MPC 35615.
1997 YC8 Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams M 119.98476 (2000.0) P Q n 0.25149238 Peri. 119.94618 +0.67215961 +0.74001376 a 2.4857235 Node 192.37901 -0.71215866 +0.63726582 e 0.0404920 Incl. 6.45629 -0.20256233 +0.21510905 P 3.92 H 15.0 G 0.15 From 9 observations 1997 Dec. 25-1998 Jan. 1.Orbital elements from MPC 31158.
