If you ever need to know the relative positions of the planets in year AF-10 (whatever year you decide that might be ;) ) for space travel in your game, I found this nifty site: http://www.fourmilab.ch/cgi-bin/Solar You can even add other orbital elements to the map. I've provided the info for some useful main belt asteroids. Just paste in the box on the site. :) Hope you find this as useful as I have! (1) Ceres Epoch 2010 July 23.0 TT = JDT 2455400.5 MPC M 113.41048 (2000.0) P Q n 0.21432817 Peri. 72.58976 -0.87485676 -0.44923357 a 2.7653485 Node 80.39321 +0.34455065 -0.84000534 e 0.0791382 Incl. 10.58682 +0.34045632 -0.30426999 P 4.60 H 3.34 G 0.12 U 0 From 6063 observations at 94 oppositions, 1802-2006, mean residual 0".61. (9) Metis Epoch 2010 July 23.0 TT = JDT 2455400.5 Goffin M 141.42944 (2000.0) P Q n 0.26737617 Peri. 6.26642 +0.25567258 -0.96250304 a 2.3862774 Node 68.94869 +0.88271693 +0.19417253 e 0.1223679 Incl. 5.57477 +0.39426179 +0.18943316 P 3.69 H 6.28 G 0.17 U 0 From 2131 observations at 96 oppositions, 1822-2001, mean residual 0".54. (44) Nysa Epoch 2010 July 23.0 TT = JDT 2455400.5 Goffin M 326.56857 (2000.0) P Q n 0.26130795 Peri. 343.43352 -0.42318936 -0.90475016 a 2.4230793 Node 131.57439 +0.83843519 -0.41128176 e 0.1475607 Incl. 3.70581 +0.34341987 -0.11079015 P 3.77 H 7.03 G 0.46 U 0 From 1410 observations at 81 oppositions, 1857-2000, mean residual 0".52.