Asteroid: 2000 YJ66

Predicted positions for POSS plate A1HX with length of trail in arcsecs. The predictor generates ephemerides for start, midth, and end of trail, along with the predicted magnitude.

     K00Y66J   1989 10 04.37500 04 06 37.69 +37 03 33.4 A1HX     16.1        261
     K00Y66J   1989 10 04.40799 04 06 39.94 +37 03 50.8 A1HX     16.1        261
     K00Y66J   1989 10 04.44097 04 06 42.20 +37 04 08.2 A1HX     16.1        261
                       54.00"         34.8"        64.2"
Actually measured positions.

     K00Y66J   1989 10 04.37500 03 58 10.94 +37 10 31.5                      261
     K00Y66J   1989 10 04.44097 03 58 14.72 +37 11 09.2                      261

Based on the improved orbit our search made predictions for NEAT frames taken from Skymorph

960814071028:
     K00Y66J   1996 08 14.29905 19 15 35.60 -21 42 51.8          15.7        566
     K00Y66J   1996 08 14.29916 19 15 35.60 -21 42 51.7          15.7        566
     K00Y66J   1996 08 14.29928 19 15 35.60 -21 42 51.6          15.7        566
                       -0.08"          0.2"         0.2"

960814072234:
     K00Y66J   1996 08 14.30744 19 15 35.39 -21 42 45.7          15.7        566
     K00Y66J   1996 08 14.30755 19 15 35.39 -21 42 45.6          15.7        566
     K00Y66J   1996 08 14.30767 19 15 35.38 -21 42 45.5          15.7        566
                       -0.08"          0.2"         0.2"

960814073728:
     K00Y66J   1996 08 14.31780 19 15 35.13 -21 42 38.1          15.7        566
     K00Y66J   1996 08 14.31791 19 15 35.12 -21 42 38.0          15.7        566
     K00Y66J   1996 08 14.31803 19 15 35.12 -21 42 37.9          15.7        566
                       -0.08"          0.2"         0.2"

Actually measured positions.

     K00Y66J  C1996 08 14.29905 19 15 33.96 -21 43 11.3          15.2 R      566
     K00Y66J  C1996 08 14.30745 19 15 33.70 -21 43 05.7                      566
     K00Y66J  C1996 08 14.31780 19 15 33.34 -21 42 58.0                      566

Animation of the three images from NEAT frames on August 14, 1996.

DSS image of 2000 YJ66 from October 4, 1989 on POSS plate A1HX

This trail was also independently located and measured by ANEOPP (see MPEC below!)

Link to the MPEC which published the improved orbit.