; 78 to 89 - Eris. All Sky position angle 325 ; what is the position angle of the motion of Eris? ; Date__(UT)__HR:MN, , , R.A._____(ICRF), DEC______(ICRF), dRA*cosD, d(DEC)/dt, a-mass, mag_ex, APmag, S-brt, ; 2020-Nov-28 04:20,N,m, 01 43 29.200883, -01 46 41.85638, -1.10701, -0.10646, 1.646, 0.179, 18.792, n.a., ; 2020-Nov-28 10:20, ,m, 01 43 28.756524, -01 46 42.49019, -1.10520, -0.10287, 1.431, 0.156, 18.792, n.a., deg = !pi/180 pa_motion = atan(-1.10701, -0.10701) print, 'pa_motion (deg) ', pa_motion/deg ; -95.5214 ; add 180 -> 84.478600 end