Una lástima no haber podido intentarlo. Primero porqué no me he enterado hasta esta mañana

y segundo porque las nubes no me hubieran dejado.

De todas maneras sólo hubiéramos podido observarlo las horas antes de su máxima aproximación 0.3LD (unos 117.000 Km) pero dado que apenas llega a los 16 metros hubiera estado siempre por encima de la mag. 15
En fin, parece que una pila ha pasado cerca de la Tierra.

Os dejo las efémerides del JPL a nivel informativo para los del hemisferio Norte, porque dada la fase de la piedra y su diurnidad, si no hay una sorpresa en las efemérides, no creo que podamos pillarlo mientras se va, quizás tengan más suerte en el Sur ya que la declinación les favorece.
http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013%20LR6;orb=1NOTA: Sebtor, lo he puesto en alertas por si pudiera observarse mientras se aleja, pero lo dudo mucho. Queda a tu criterio sacarlo de ALERTAS y ponerlo en Asteroides.
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Date__(UT)__HR:MN R.A._(ICRF/J2000.0)_DEC Azi_(a-appr)_Elev APmag Illu% delta deldot Cnst
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$$SOE
2013-Jun-07 20:00 N 13 46 34.29 -18 20 07.8 170.8700 29.5468 16.26 84.704 0.00212608952335 -9.0239043 Vir
2013-Jun-07 20:05 Nt 13 45 58.41 -18 29 00.7 172.4090 29.5523 16.24 84.638 0.00210801093209 -9.0043795 Vir
2013-Jun-07 20:10 N 13 45 21.83 -18 38 02.0 173.9497 29.5275 16.23 84.571 0.00208997183618 -8.9845155 Vir
2013-Jun-07 20:15 N 13 44 44.54 -18 47 11.7 175.4908 29.4721 16.21 84.502 0.00207197292381 -8.9643074 Vir
2013-Jun-07 20:20 N 13 44 06.52 -18 56 30.1 177.0313 29.3859 16.20 84.431 0.00205401488903 -8.9437495 Vir
2013-Jun-07 20:25 N 13 43 27.75 -19 05 57.3 178.5697 29.2690 16.18 84.358 0.00203609843954 -8.9228361 Vir
2013-Jun-07 20:30 N 13 42 48.22 -19 15 33.6 180.1050 29.1210 16.16 84.284 0.00201822429438 -8.9015612 Vir
2013-Jun-07 20:35 N 13 42 07.90 -19 25 19.0 181.6359 28.9421 16.15 84.208 0.00200039318469 -8.8799181 Vir
2013-Jun-07 20:40 N 13 41 26.77 -19 35 13.9 183.1612 28.7322 16.13 84.129 0.00198260585740 -8.8579000 Vir
2013-Jun-07 20:45 A 13 40 44.83 -19 45 18.5 184.6798 28.4913 16.12 84.049 0.00196486307013 -8.8354995 Vir
2013-Jun-07 20:50 A 13 40 02.03 -19 55 32.8 186.1905 28.2196 16.10 83.967 0.00194716559797 -8.8127091 Vir
2013-Jun-07 20:55 A 13 39 18.37 -20 05 57.2 187.6922 27.9170 16.08 83.883 0.00192951423134 -8.7895203 Vir
2013-Jun-07 21:00 A 13 38 33.82 -20 16 31.9 189.1838 27.5837 16.07 83.797 0.00191190977702 -8.7659247 Vir
2013-Jun-07 21:05 A 13 37 48.36 -20 27 17.0 190.6644 27.2200 16.05 83.708 0.00189435306203 -8.7419130 Vir
2013-Jun-07 21:10 A 13 37 01.96 -20 38 12.9 192.1330 26.8260 16.03 83.618 0.00187684492874 -8.7174755 Vir
2013-Jun-07 21:15 A 13 36 14.60 -20 49 19.7 193.5887 26.4019 16.02 83.525 0.00185938624191 -8.6926019 Vir
2013-Jun-07 21:20 A 13 35 26.24 -21 00 37.8 195.0307 25.9480 16.00 83.429 0.00184197788685 -8.6672815 Vir
2013-Jun-07 21:25 A 13 34 36.88 -21 12 07.2 196.4581 25.4646 15.99 83.331 0.00182462077061 -8.6415027 Vir
2013-Jun-07 21:30 A 13 33 46.47 -21 23 48.4 197.8703 24.9521 15.97 83.231 0.00180731582621 -8.6152536 Vir
2013-Jun-07 21:35 13 32 54.98 -21 35 41.5 199.2667 24.4106 15.95 83.128 0.00179006400802 -8.5885213 Vir
2013-Jun-07 21:40 13 32 02.39 -21 47 46.9 200.6466 23.8406 15.94 83.022 0.00177286629910 -8.5612923 Vir
2013-Jun-07 21:45 13 31 08.66 -22 00 04.7 202.0094 23.2424 15.92 82.913 0.00175572370964 -8.5335525 Vir
2013-Jun-07 21:50 13 30 13.77 -22 12 35.3 203.3549 22.6164 15.90 82.802 0.00173863727852 -8.5052869 Vir
2013-Jun-07 21:55 13 29 17.67 -22 25 19.0 204.6824 21.9630 15.89 82.688 0.00172160807787 -8.4764796 Vir
2013-Jun-07 22:00 13 28 20.33 -22 38 16.0 205.9918 21.2824 15.87 82.570 0.00170463720878 -8.4471141 Vir
2013-Jun-07 22:05 13 27 21.72 -22 51 26.7 207.2827 20.5752 15.85 82.450 0.00168772580903 -8.4171727 Hya
2013-Jun-07 22:10 13 26 21.79 -23 04 51.3 208.5549 19.8417 15.84 82.326 0.00167087505191 -8.3866371 Hya
2013-Jun-07 22:15 13 25 20.50 -23 18 30.2 209.8081 19.0822 15.82 82.199 0.00165408614877 -8.3554876 Hya
2013-Jun-07 22:20 13 24 17.81 -23 32 23.7 211.0423 18.2972 15.80 82.068 0.00163736035046 -8.3237038 Hya
2013-Jun-07 22:25 13 23 13.68 -23 46 32.1 212.2574 17.4870 15.79 81.934 0.00162069895234 -8.2912643 Hya
2013-Jun-07 22:30 13 22 08.06 -24 00 55.7 213.4534 16.6520 15.77 81.796 0.00160410329063 -8.2581461 Hya
2013-Jun-07 22:35 13 21 00.90 -24 15 34.8 214.6301 15.7926 15.75 81.654 0.00158757475058 -8.2243256 Hya
2013-Jun-07 22:40 13 19 52.15 -24 30 29.9 215.7877 14.9091 15.74 81.508 0.00157111476598 -8.1897775 Hya
2013-Jun-07 22:45 13 18 41.76 -24 45 41.2 216.9263 14.0018 15.72 81.358 0.00155472482165 -8.1544756 Hya
2013-Jun-07 22:50 13 17 29.68 -25 01 09.1 218.0458 13.0711 15.70 81.204 0.00153840645903 -8.1183920 Hya
2013-Jun-07 22:55 13 16 15.84 -25 16 54.0 219.1464 12.1173 15.69 81.045 0.00152216127304 -8.0814976 Hya
2013-Jun-07 23:00 13 15 00.19 -25 32 56.2 220.2283 11.1407 15.67 80.882 0.00150599092086 -8.0437618 Hya
2013-Jun-07 23:05 13 13 42.66 -25 49 16.0 221.2915 10.1416 15.66 80.714 0.00148989712199 -8.0051526 Hya
2013-Jun-07 23:10 13 12 23.18 -26 05 54.0 222.3364 9.1202 15.64 80.542 0.00147388166133 -7.9656361 Hya
2013-Jun-07 23:15 13 11 01.69 -26 22 50.3 223.3629 8.0769 15.62 80.364 0.00145794639544 -7.9251770 Hya
2013-Jun-07 23:20 13 09 38.12 -26 40 05.5 224.3715 7.0118 15.61 80.181 0.00144209325005 -7.8837382 Hya
2013-Jun-07 23:25 13 08 12.39 -26 57 39.8 225.3621 5.9252 15.59 79.993 0.00142632422942 -7.8412808 Hya
2013-Jun-07 23:30 13 06 44.42 -27 15 33.7 226.3352 4.8173 15.57 79.799 0.00141064141716 -7.7977640 Hya
2013-Jun-07 23:35 13 05 14.12 -27 33 47.5 227.2907 3.6883 15.56 79.599 0.00139504697995 -7.7531451 Hya
2013-Jun-07 23:40 13 03 41.41 -27 52 21.5 228.2291 2.5383 15.54 79.394 0.00137954317454 -7.7073794 Hya
2013-Jun-07 23:45 13 02 06.20 -28 11 16.3 229.1504 1.3676 15.53 79.182 0.00136413234594 -7.6604200 Hya
2013-Jun-07 23:50 13 00 28.39 -28 30 32.1 230.0548 0.1762 15.51 78.963 0.00134881693753 -7.6122181 Hya
2013-Jun-08 04:50 *m 08 09 43.60 -49 45 11.5 122.2786 -68.4162 15.80 44.222 0.00078276769393 0.1789794 Vel
2013-Jun-08 04:55 *m 08 01 07.69 -49 34 38.8 120.8827 -66.2739 15.85 43.314 0.00078334727290 0.3989908 Pup
2013-Jun-08 05:00 *m 07 52 36.71 -49 21 48.2 119.8436 -64.1098 15.91 42.413 0.00078436774313 0.6186162 Pup
2013-Jun-08 05:05 *m 07 44 11.92 -49 06 43.6 119.0833 -61.9318 15.96 41.518 0.00078582797271 0.8375018 Pup
2013-Jun-08 05:10 *m 07 35 54.47 -48 49 29.9 118.5446 -59.7461 16.02 40.633 0.00078772612683 1.0553007 Pup
2013-Jun-08 05:15 *m 07 27 45.40 -48 30 12.7 118.1848 -57.5577 16.07 39.758 0.00079005968369 1.2716752 Pup
2013-Jun-08 05:20 *m 07 19 45.65 -48 08 58.5 117.9719 -55.3705 16.13 38.895 0.00079282545626 1.4862999 Pup
2013-Jun-08 05:25 *m 07 11 56.01 -47 45 54.1 117.8812 -53.1880 16.19 38.045 0.00079601961892 1.6988638 Pup
2013-Jun-08 05:30 *m 07 04 17.16 -47 21 06.7 117.8934 -51.0133 16.26 37.209 0.00079963773876 1.9090725 Pup
2013-Jun-08 05:35 *m 06 56 49.68 -46 54 44.2 117.9935 -48.8489 16.32 36.388 0.00080367481058 2.1166499 Pup
2013-Jun-08 05:40 *m 06 49 34.00 -46 26 54.2 118.1694 -46.6971 16.39 35.583 0.00080812529551 2.3213400 Pup
2013-Jun-08 05:45 *m 06 42 30.44 -45 57 44.8 118.4115 -44.5599 16.45 34.795 0.00081298316213 2.5229077 Pup
2013-Jun-08 05:50 *m 06 35 39.23 -45 27 23.9 118.7120 -42.4393 16.52 34.025 0.00081824192975 2.7211400 Pup
2013-Jun-08 05:55 *m 06 29 00.48 -44 55 59.4 119.0644 -40.3369 16.59 33.273 0.00082389471308 2.9158464 Pup
2013-Jun-08 06:00 *m 06 22 34.25 -44 23 39.0 119.4635 -38.2541 16.66 32.540 0.00082993426758 3.1068591 Pup
2013-Jun-08 06:05 *m 06 16 20.48 -43 50 30.2 119.9050 -36.1925 16.73 31.826 0.00083635303508 3.2940329 Pup
2013-Jun-08 06:10 *m 06 10 19.08 -43 16 40.2 120.3854 -34.1531 16.80 31.132 0.00084314318893 3.4772451 Pup
2013-Jun-08 06:15 *m 06 04 29.87 -42 42 15.9 120.9016 -32.1371 16.87 30.458 0.00085029667831 3.6563946 Col
2013-Jun-08 06:20 *m 05 58 52.64 -42 07 23.9 121.4511 -30.1455 16.94 29.803 0.00085780527119 3.8314015 Col
2013-Jun-08 06:25 *m 05 53 27.14 -41 32 10.3 122.0319 -28.1792 17.01 29.169 0.00086566059555 4.0022059 Col
2013-Jun-08 06:30 *m 05 48 13.08 -40 56 40.9 122.6422 -26.2391 17.09 28.555 0.00087385417866 4.1687670 Col
2013-Jun-08 06:35 *m 05 43 10.16 -40 21 01.1 123.2806 -24.3257 17.16 27.961 0.00088237748398 4.3310616 Col
2013-Jun-08 06:40 *m 05 38 18.04 -39 45 15.9 123.9459 -22.4399 17.23 27.387 0.00089122194571 4.4890833 Col
2013-Jun-08 06:45 *m 05 33 36.39 -39 09 29.8 124.6371 -20.5822 17.31 26.832 0.00090037900063 4.6428409 Col
2013-Jun-08 06:50 *m 05 29 04.85 -38 33 47.0 125.3534 -18.7530 17.38 26.297 0.00090984011740 4.7923570 Col
2013-Jun-08 06:55 *m 05 24 43.08 -37 58 11.3 126.0941 -16.9529 17.45 25.780 0.00091959682309 4.9376669 Col
2013-Jun-08 07:00 *m 05 20 30.70 -37 22 46.2 126.8586 -15.1822 17.52 25.283 0.00092964072703 5.0788171 Col
2013-Jun-08 07:05 *m 05 16 27.38 -36 47 34.8 127.6467 -13.4414 n.a. 24.804 0.00093996354206 5.2158641 Col