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Table 3 Statistics of the two-way LLR passes obtained by Grasse during and immediately surrounding the LRO ranging experimental periods

From: First two-way laser ranging to a lunar orbiter: infrared observations from the Grasse station to LRO’s retro-reflector array

Time (UTC) Target Δt (min) Number echos Range (km) Return rate (%) Hum. (%)
Date: 2018-09-04
 01:31:00 LRO 8.20 25 366,726 0.51 69
 01:51:45 A11 14.55 405 366,641 4.64 73
 02:05:09 A14 11.23 506 366,241 7.51 77
 02:44:04 A11 11.33 365 365,659 5.37 86
 02:50:26 A14 3.78 155 365,408 6.83 89
 03:28:00 LRO 9.40 43 364,568 0.76 92
 03:45:49 A11 10.22 786 364,666 12.82 92
 03:58:33 A14 12.75 1002 364,346 13.09 92
Date: 2019-08-23
 01:52:22 A11 10.22 249 386,389 4.06 66
 02:34:00 LRO 9.20 76 385,441 1.38 67
 03:40:23 A11 10.98 113 384,881 1.71 62
 03:51:03 A14 10.30 304 384,587 4.92 62
Date: 2019-08-24
 01:52:59 A11 3.88 45 381,402 1.93 72
 01:56:00 LRO 13.80 76 380,942 0.92 71
 02:39:33 A11 10.37 35 380,525 0.56 76