Last updated 9-Sep-1999
1999 YW4 became multi-oppositional in the Spring of 1999!
1997 YW4 Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Williams M 23.06610 (2000.0) P Q n 0.27479757 Peri. 359.27087 -0.67809959 +0.73052824 a 2.3431178 Node 228.02946 -0.67377133 -0.66173444 e 0.0746984 Incl. 6.22982 -0.29362074 -0.16862982 P 3.59 H 15.0 G 0.15 U 4 From 44 observations at 2 oppositions, 1997-1999, mean residual 0".71. Orbital elements from MPC 35308.
1997 YW4 Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams M 194.40379 (2000.0) P Q n 0.27700651 Peri. 19.47518 -0.37249920 +0.92424211 a 2.3306447 Node 228.75136 -0.86555015 -0.37856999 e 0.0791111 Incl. 6.39863 -0.33476451 -0.04961141 P 3.56 H 15.0 G 0.15 From 10 observations 1997 Dec. 22-1998 Jan. 1.Orbital elements from MPC 31157.
