Asteroid: 2001 XR1

Predicted positions for POSS plates A1WL and A193 with length of trail in arcsecs. The predictor generates ephemerides for start, midth, and end of trail, along with the predicted magnitude.

     K01X01R   1987 11 27.34861 07 08 25.57 +40 40 09.9          19.4        261
     K01X01R   1987 11 27.37465 07 08 23.47 +40 40 16.1 A1WL     19.4        261
     K01X01R   1987 11 27.40069 07 08 21.37 +40 40 22.4          19.4        261
                      -47.70"         12.5"        49.3"

     K01X01R   1994 12 01.37083 07 20 25.64 +39 24 39.2          19.2        261
     K01X01R   1994 12 01.39514 07 20 23.60 +39 24 44.0 A193     19.1        261
     K01X01R   1994 12 01.41944 07 20 21.55 +39 24 48.7          19.1        261
                      -47.32"          9.5"        48.3"

Actually measured positions:

     K01X01R   1987 11 27.34861 05 40 17.83 +45 42 21.6 A1WL                 261
     K01X01R   1987 11 27.40069 05 40 09.10 +45 42 20.5 A1WL                 261
     K01X01R   1994 12 01.37083 06 32 07.50 +42 52 26.8 A193                 261
     K01X01R   1994 12 01.41944 06 32 00.77 +42 52 33.9 A193                 261

DSS image of 2001 XR1 from November 27, 1987 on POSS plate A1WL

DSS image of 2001 XR1 from December 12, 1994 on POSS plate A193

Link to the MPEC which published the improved orbit.