Asteroid: 1999 XG135

Predicted positions for POSS plate A024 with length of trail in arcsecs. The predictor generates ephemerides for start, midth, and end of trail, along with the predicted magnitude.

     J99XD5G   1990 01 29.33403 09 18 36.89 +40 54 56.9          16.8        675
     J99XD5G   1990 01 29.35660 09 18 37.61 +40 55 19.7          16.8        675
     J99XD5G   1990 01 29.37917 09 18 38.32 +40 55 42.5          16.8        675
                       16.24"         45.6"        48.4"

Actually measured positions, start and end of trail

Observations:
     J99XD5G  P1990 01 29.33403 09 16 20.82 +41 00 01.7 A024                 675
     J99XD5G  P1990 01 29.37917 09 16 21.87 +41 00 46.3 A024                 675

Link to the MPEC which published the improved orbit.

DSS image of 1999 XG135 from January 29, 1990 on POSS plate A024