Asteroid: 2000 PN9

Predicted positions for POSS plates A0SE and A0NW with length of trail in arcsecs. The predictor generates ephemerides for start, midth, and end of trail, along with the predicted magnitude.

     K00P09N   1990 08 21.32778 23 07 23.23 +11 28 54.8 A0SE     17.3        261
     K00P09N   1990 08 21.35729 23 07 20.92 +11 27 53.4 A0SE     17.3        261
     K00P09N   1990 08 21.38681 23 07 18.60 +11 26 51.9 A0SE     17.2        261
                      -68.18"       -122.9"       140.5"

     K00P09N   1990 08 02.39583 23 22 35.39 +18 31 27.2 A0NW     18.4        261
     K00P09N   1990 08 02.42361 23 22 34.80 +18 31 06.2 A0NW     18.4        261
     K00P09N   1990 08 02.45139 23 22 34.21 +18 30 45.2 A0NW     18.4        261
                      -16.84"        -42.0"        45.2"

Actually measured positions.

     K00P09N   1990 08 02.39583 23 06 28.67 +19 46 15.5                      261
     K00P09N   1990 08 02.45139 23 06 26.55 +19 45 38.1                      261

     K00P09N   1990 08 21.32778 22 46 30.57 +13 14 11.6                      261
     K00P09N   1990 08 21.38681 22 46 24.89 +13 12 16.9                      261

DSS image of 2000 PN9 from August 21, 1990 on POSS plate A0SE

DSS image of 2000 PN9 from August 2, 1990 on POSS plate A0NW

These trails were also independently located and measured by Forti et al. (see MPEC below!)

Link to the MPEC which published the improved orbit.