"Pseudo-MPEC" for 2010-050A = SM999CF = Chang'e 2 probe

Created Fri Jun 15 08:21:49 2012 using Find_Orb

This is probably all the data we're going to get on this object. According to this post, Chang'e 2 has left the earth-sun L2 point and is headed for an encounter with (4179) Toutatis, presumably in December 2012.

Click here for an older version of this page, covering the time between lunar departure and arrival at L2.

Astrometry:
2010-050A     C2011 06 27.33631 20 11 40.12 -18 43 16.1         x18.0 V D0374G96
2010-050A     C2011 06 27.34450 20 11 40.59 -18 42 50.5         x18.3 V D0374G96
2010-050A     C2011 06 27.36065 20 11 41.31 -18 41 56.9         x17.5 V D0374G96
2010-050A     C2011 06 27.37192 20 11 41.78 -18 41 17.5         x17.7 V D0374G96
2010-050A     C2011 06 27.38023 20 11 42.07 -18 40 47.3         x17.9 V D0374G96
2010-050A     C2011 06 27.38853 20 11 42.36 -18 40 16.8         x18.2 V D0374G96
2010-050A     C2011 06 27.39686 20 11 42.64 -18 39 44.0         x18.1 V D0374G96
2010-050A    |C2011 06 27.44052 20 11 38.24 -18 36 35.2         x17.8 R D0374H06
2010-050A    |C2011 06 27.44224 20 11 38.39 -18 36 26.5         x18.1 R D0374H06
2010-050A    |C2011 06 27.44395 20 11 38.55 -18 36 18.2         x17.8 R D0374H06
2010-050A    IC2011 06 27.61095 20 14 15.85 -18 02 55.7         x       D0375D96
2010-050A    IC2011 06 27.66422 20 14 19.32 -18 00 14.5         x       D0375D96
2010-050A    KC2011 06 27.96049 20 17 09.07 -18 07 05.7         x18.3 V D0374595
2010-050A    KC2011 06 27.96502 20 17 09.75 -18 06 53.6         x18.4 V D0374595
2010-050A    KC2011 06 27.96956 20 17 10.46 -18 06 40.6         x18.4 V D0374595
2010-050A    KC2011 06 28.02980 20 17 22.80 -18 03 24.5         x17.8 R D0374204
2010-050A    KC2011 06 28.03368 20 17 23.23 -18 03 11.9         x       D0374204
2010-050A    KC2011 06 28.03755 20 17 23.63 -18 02 58.3         x       D0374204
2010-050A    |C2011 06 28.14263 20 19 07.11 -17 30 58.2         x18.6 V D0374807
2010-050A    |C2011 06 28.14634 20 19 07.69 -17 30 50.7         x18.8 V D0374807
2010-050A    |C2011 06 28.14979 20 19 08.23 -17 30 43.7         x18.8 V D0374807
2010-050A    |C2011 06 28.15321 20 19 08.75 -17 30 36.4         x18.5 V D0374807
2010-050A     C2011 06 28.33474720 19 47.90 -17 43 45.5         x18.5 R D0374H36
2010-050A     C2011 06 28.33623620 19 47.97 -17 43 40.1         x18.2 R D0374H36
2010-050A     C2011 06 28.33924920 19 48.11 -17 43 29.7         x18.7 R D0374H36
2010-050A    `C2011 06 28.60631 20 22 30.74 -17 03 12.4         x18.6 R D0375D90
2010-050A    `C2011 06 28.60920 20 22 31.00 -17 03 04.9         x18.2 R D0375D90
2010-050A    `C2011 06 28.61317 20 22 31.23 -17 02 54.4         x18.7 R D0375D90
2010-050A    `C2011 06 28.61709 20 22 31.51 -17 02 44.3         x       D0375D90
2010-050A     C2011 06 28.71541 20 22 42.54 -17 20 18.5         x18.2 R D0374300
2010-050A     C2011 06 28.71707 20 22 42.53 -17 20 11.9         x18.4 R D0374300
2010-050A     C2011 06 28.71872 20 22 42.58 -17 20 06.5         x18.9 R D0374300
2010-050A     C2011 06 28.72038 20 22 42.59 -17 20 00.5         x19.0 R D0374300
2010-050A     C2011 06 28.72204 20 22 42.64 -17 19 54.7         x18.9 R D0374300
2010-050A     C2011 06 28.72369 20 22 42.67 -17 19 48.0         x18.7 R D0374300
2010-050A     C2011 06 28.72536 20 22 42.67 -17 19 42.0         x18.3 R D0374300
2010-050A     C2011 07 28.48235 22 09 59.391-01 25 45.25        x20.3 w D0377F51
2010-050A     C2011 07 28.51079 22 09 52.513-01 25 23.07        x20.1 w D0377F51
2010-050A     C2011 07 28.52506 22 09 49.046-01 25 11.80        x20.1 w D0377F51
2010-050A     C2011 07 31.57083 22 13 09.546-00 50 13.38        x20.2 r D0377F51
2010-050A     C2011 07 31.57382 22 13 08.863-00 50 11.51        x19.8 r D0377F51
2010-050A     C2011 07 31.57530 22 13 08.569-00 50 10.66        x20.0 r D0377F51
2010-050A     C2011 07 31.57678 22 13 08.325-00 50 09.44        x21.1 r D0377F51
2010-050A    KC2011 08 01.27947622 14 22.14 -00 47 11.4         x19.1 V D0377H21
2010-050A    KC2011 08 01.28542222 14 20.96 -00 47 08.1         x19.1 V D0377H21
2010-050A    KC2011 08 01.29029122 14 19.98 -00 47 05.5         x19.1 V D0377H21
2010-050A    %C2011 08 01.49194 22 14 29.13 -00 41 28.8         x19.4 R D0377F65
2010-050A    %C2011 08 01.49299 22 14 28.86 -00 41 28.1         x19.6 R D0377F65
2010-050A    %C2011 08 01.49411 22 14 28.58 -00 41 27.6         x19.6 R D0377F65
2010-050A    %C2011 08 01.49516 22 14 28.31 -00 41 27.1         x19.6 R D0377F65
2010-050A    %C2011 08 01.49625 22 14 28.04 -00 41 26.4         x19.7 R D0377F65
2010-050A    %C2011 08 01.49731 22 14 27.76 -00 41 25.8         x19.9 R D0377F65
2010-050A    %C2011 08 01.49843 22 14 27.46 -00 41 25.2         x19.6 R D0377F65
2010-050A    %C2011 08 01.49948 22 14 27.19 -00 41 24.6         x19.5 R D0377F65
2010-050A    %C2011 08 01.50061 22 14 26.89 -00 41 24.0         x19.2 R D0377F65
2010-050A     C2011 08 06.55910 22 18 20.996-00 05 35.68        x21.3 g D0378F51
2010-050A     C2011 08 06.56059 22 18 20.572-00 05 35.04        x21.6 g D0378F51
2010-050A     C2011 08 06.56207 22 18 20.285-00 05 34.64        x22.3 g D0378F51
2010-050A     C2011 08 06.56503 22 18 19.533-00 05 33.56        x21.6 g D0378F51
2010-050A     C2011 08 06.56651 22 18 19.174-00 05 33.10        x21.4 g D0378F51
2010-050A     C2011 08 06.56948 22 18 18.526-00 05 32.15        x21.2 g D0378F51
2010-050A     C2011 08 06.57299 22 18 17.774-00 05 31.08        x20.0 r D0378F51
2010-050A     C2011 08 06.57448 22 18 17.428-00 05 30.58        x20.1 r D0378F51
2010-050A     C2011 08 06.57744 22 18 16.719-00 05 29.53        x19.9 r D0378F51
2010-050A     C2011 08 06.57893 22 18 16.449-00 05 29.18        x19.9 r D0378F51
2010-050A     C2011 08 06.58042 22 18 16.094-00 05 28.64        x20.2 r D0378F51
2010-050A     C2011 08 06.58191 22 18 15.674-00 05 27.90        x20.5 r D0378F51
2010-050A     C2011 08 24.86792 22 27 12.94 -00 17 52.1         x18.3 V D0378A50
2010-050A     C2011 08 24.86838 22 27 12.78 -00 17 53.2         x18.1 V D0378A50
2010-050A     C2011 08 24.86884 22 27 12.71 -00 17 53.1         x17.5 V D0378A50
2010-050A     C2011 08 24.89157 22 27 08.33 -00 18 01.5         x18.0 V D0378A50
2010-050A     C2011 08 24.89204 22 27 08.22 -00 18 00.6         x18.2 V D0378A50
2010-050A     C2011 08 24.89221 22 27 08.16 -00 18 01.8         x18.3 V D0378A50
2010-050A     C2011 08 24.89249 22 27 08.13 -00 18 01.3         x18.0 V D0378A50
2010-050A     C2011 08 24.89295 22 27 08.05 -00 18 01.4         x18.1 V D0378A50
2010-050A     C2011 08 24.91567 22 27 03.56 -00 18 09.9         x19.0 V D0378A50
2010-050A     C2011 08 24.91613 22 27 03.46 -00 18 10.6         x18.8 V D0378A50
2010-050A     C2011 08 24.91659 22 27 03.38 -00 18 10.6         x18.5 V D0378A50
2010-050A     C2011 09 17.85403 22 34 22.03 -04 31 00.2         x18.5 V D0380J75
2010-050A     C2011 09 17.86462 22 34 20.28 -04 31 08.7         x18.3 V D0380J75
2010-050A     C2011 09 17.87519 22 34 18.46 -04 31 18.1         x18.5 V D0380J75
2010-050A     C2011 09 18.19649 22 34 28.59 -04 34 15.0         x18.9 V D0380703
2010-050A     C2011 09 18.20341 22 34 27.15 -04 34 19.5         x18.8 V D0380703
2010-050A     C2011 09 18.21030 22 34 25.68 -04 34 25.4         x18.4 V D0380703
2010-050A     C2011 09 18.21705 22 34 24.27 -04 34 31.7         x18.6 V D0380703
2010-050A     C2011 11 16.21612 02 09 27.82 +00 50 06.5         x18.6 V D0387703
2010-050A     C2011 11 16.22116 02 09 28.44 +00 50 16.9         x19.0 V D0387703
2010-050A     C2011 11 16.22628 02 09 29.12 +00 50 29.9         x18.4 V D0387703
2010-050A     C2011 11 16.23137 02 09 29.70 +00 50 43.1         x18.6 V D0387703
2010-050A     C2011 11 16.25494 02 09 30.74 +00 51 46.6         x18.7 R D0387G48
2010-050A     C2011 11 16.25672 02 09 30.97 +00 51 50.0         x18.5 R D0387G48
2010-050A     C2011 11 16.25672 02 09 31.05 +00 51 49.9         x18.8 R D0387G48
2010-050A     C2011 11 16.25851 02 09 31.25 +00 51 54.2         x18.4 R D0387G48
2010-050A    |C2011 11 16.26177 02 09 28.20 +00 51 46.2         x18.5 V D0387H06
2010-050A    |C2011 11 16.26478 02 09 28.61 +00 51 52.7         x18.4 V D0387H06
2010-050A     C2011 11 16.26530 02 09 32.08 +00 52 09.8         x18.8 R D0387G48
2010-050A     C2011 11 16.26530 02 09 32.08 +00 52 10.0         x18.7 R D0387G48
2010-050A     C2011 11 16.26703 02 09 32.31 +00 52 14.1         x18.6 R D0387G48
2010-050A     C2011 11 16.26703 02 09 32.33 +00 52 14.3         x18.9 R D0387G48
2010-050A    |C2011 11 16.26779 02 09 29.03 +00 51 59.9         x18.3 V D0387H06
2010-050A     C2011 11 16.26876 02 09 32.50 +00 52 18.2         x18.7 R D0387G48
2010-050A     C2011 11 16.26876 02 09 32.52 +00 52 18.3         x18.9 R D0387G48
2010-050A     C2011 11 16.27049 02 09 32.71 +00 52 22.2         x19.3 R D0387G48
2010-050A     C2011 11 16.28916 02 09 37.16 +00 52 59.2         x18.6 R D0387854
2010-050A     C2011 11 16.29078 02 09 37.37 +00 53 03.7         x18.6 R D0387854
2010-050A     C2011 11 16.29240 02 09 37.64 +00 53 07.9         x18.5 R D0387854
2010-050A    HC2011 11 16.39713 02 09 58.79 +00 57 12.8         x       D0387291
2010-050A    HC2011 11 16.39857 02 09 59.19 +00 57 16.3         x       D0387291
2010-050A    HC2011 11 16.40000 02 09 59.56 +00 57 19.1         x       D0387291
2010-050A     C2011 11 16.48186 02 11 56.61 +00 59 51.4         x18.4 V D0387900
2010-050A     C2011 11 16.49612 02 11 59.14 +01 00 24.9         x18.4 V D0387900
2010-050A     C2011 11 16.51039 02 12 01.41 +01 00 58.8         x18.5 V D0387900
2010-050A    KC2011 11 16.82276002 14 44.85 +01 09 42.7         x18.7 V D0388510
2010-050A    KC2011 11 16.82434 02 14 47.32 +01 10 50.2         x       D0387204
2010-050A    KC2011 11 16.83066 02 14 48.84 +01 11 05.7         x18.1 R D0387204
2010-050A    KC2011 11 16.83592202 14 48.37 +01 10 14.6         x19.0 V D0388510
2010-050A    KC2011 11 16.83727 02 14 50.38 +01 11 21.7         x       D0387204
2010-050A    KC2011 11 16.84832 02 14 51.91 +01 12 16.4         x17.6 R D0388160
2010-050A    KC2011 11 16.84908402 14 51.71 +01 10 47.0         x18.2 V D0388510
2010-050A    KC2011 11 16.85108 02 14 52.45 +01 12 22.9         x18.3 R D0388160
2010-050A    KC2011 11 16.85385 02 14 53.00 +01 12 29.2         x18.5 R D0388160
2010-050A    KC2011 11 16.85660 02 14 53.56 +01 12 36.1         x18.6 R D0388160
2010-050A     C2011 11 22.21225 03 02 29.14 +05 08 02.8         x17.8 V D0392703
2010-050A     C2011 11 22.21905 03 02 30.37 +05 08 23.2         x17.7 V D0392703
2010-050A     C2011 11 22.22596 03 02 31.63 +05 08 43.0         x17.7 V D0392703
2010-050A     C2011 11 22.23282 03 02 32.85 +05 09 03.6         x18.0 V D0392703
2010-050A     C2011 12 02.02377 04 41 54.81 +13 06 50.9         x       D0396J43
2010-050A     C2011 12 02.03867 04 41 58.20 +13 07 31.3         x       D0396J43
2010-050A     C2011 12 02.05352 04 42 01.66 +13 08 10.0         x       D0396J43
2010-050A     C2011 12 02.06836 04 42 05.21 +13 08 46.3         x       D0396J43
2010-050A     C2011 12 20.17348 07 48 08.98 +21 34 29.1          18.8 R      J04
2010-050A     C2011 12 20.19404 07 48 11.66 +21 34 25.3          18.8 R      J04
2010-050A     C2011 12 20.21459 07 48 14.78 +21 34 16.7          18.8 R      J04
2010-050A     C2011 12 20.23515 07 48 18.46 +21 34 03.3          18.9 R      J04
2010-050A     C2011 12 24.38155 08 21 51.15 +22 02 09.7          19.6 V D0400703
2010-050A     C2011 12 24.39002 08 21 51.66 +22 02 13.4          18.8 V D0400703
2010-050A     C2011 12 24.39862 08 21 52.20 +22 02 16.7          19.0 V D0400703
2010-050A     C2011 12 24.40719 08 21 52.77 +22 02 18.2          18.8 V D0400703
2010-050A    KC2011 12 24.42770108 21 34.91 +21 59 39.9          18.7 V D0400H21
2010-050A    KC2011 12 24.43028108 21 35.32 +21 59 38.0          18.8 V D0400H21
2010-050A    KC2011 12 24.43544508 21 36.13 +21 59 34.1          18.7 V D0400H21
2010-050A    KC2011 12 24.43967908 21 36.83 +21 59 30.9          18.8 V D0400H21
2010-050A    KC2011 12 24.44228908 21 37.26 +21 59 28.7          18.9 V D0400H21
2010-050A    KC2011 12 24.46113408 21 45.98 +21 59 47.7          18.1 R D0400H36
2010-050A    KC2011 12 24.47246608 21 47.88 +21 59 37.5          18.5 R D0400H36
2010-050A    KC2011 12 24.47799308 21 48.99 +21 59 31.8          17.8 R D0400H36
2010-050A     C2011 12 24.50817 08 22 02.28 +22 01 34.0          19.6 V D0400G96
2010-050A     C2011 12 24.51050 08 22 02.64 +22 01 31.8          19.6 V D0400G96
2010-050A     C2011 12 24.51282 08 22 03.00 +22 01 29.4          19.1 V D0400G96
2010-050A     C2011 12 24.51512 08 22 03.32 +22 01 27.2          18.9 V D0400G96
2010-050A     C2011 12 24.54825 08 22 09.48 +22 00 47.8          19.7 V D0400G96
2010-050A     C2011 12 24.54882 08 22 09.62 +22 00 47.0          19.6 V D0400G96
2010-050A     C2011 12 24.54940 08 22 09.76 +22 00 46.2          19.6 V D0400G96
2010-050A     C2011 12 24.54998 08 22 09.87 +22 00 45.6          19.3 V D0400G96
2010-050A     C2012 01 18.35749 10 23 54.42 +20 47 02.7          19.9 V D0405703
2010-050A     C2012 01 18.36708 10 23 53.26 +20 47 05.1          19.7 V D0405703
2010-050A     C2012 01 18.37662 10 23 52.04 +20 47 07.5          20.0 V D0405703
2010-050A     C2012 01 18.38617 10 23 50.82 +20 47 07.0          19.1 V D0405703
2010-050A    mC2012 01 18.47672 10 23 39.36 +20 46 37.7                 D0405291
2010-050A    mC2012 01 18.47917 10 23 39.08 +20 46 35.7                 D0405291
2010-050A    mC2012 01 18.48162 10 23 38.78 +20 46 33.8                 D0405291
2010-050A     C2012 01 18.50405 10 23 35.93 +20 46 04.6          19.6 V D0405703
2010-050A     C2012 01 18.50484 10 23 35.80 +20 46 03.5          20.0 V D0405703
2010-050A     C2012 01 18.50565 10 23 35.66 +20 46 02.9          19.8 V D0405703
2010-050A     C2012 01 18.50643 10 23 35.62 +20 46 02.4          19.6 V D0405703
2010-050A    mC2012 01 18.53653 10 23 33.86 +20 45 34.4                 D0405291
2010-050A    mC2012 01 18.54086 10 23 33.61 +20 45 28.7                 D0405291
2010-050A    mC2012 01 18.54515 10 23 33.40 +20 45 22.8                 D0405291
2010-050A    mC2012 01 19.31617 10 26 43.21 +20 42 37.8                 D0405291
2010-050A    mC2012 01 19.31932 10 26 42.91 +20 42 39.9                 D0405291
2010-050A    mC2012 01 19.32247 10 26 42.64 +20 42 41.9                 D0405291
2010-050A     C2012 01 30.37784 10 47 22.84 +20 01 35.8          19.2 V D0409703
2010-050A     C2012 01 30.38603 10 47 21.12 +20 01 33.9          19.4 V D0409703
2010-050A     C2012 01 30.39425 10 47 19.28 +20 01 31.4          19.5 V D0409703
2010-050A     C2012 03 17.91203 10 52 32.99 +11 45 59.2          17.7 R D0420106
2010-050A     C2012 03 17.92496 10 52 29.94 +11 45 43.9          18.1 R D0420106
2010-050A     C2012 03 17.93787 10 52 26.92 +11 45 28.5          18.2 R D0420106
2010-050A     C2012 03 17.95085 10 52 23.90 +11 45 11.6          18.2 R D0420106
2010-050A     C2012 03 21.23232 10 52 37.05 +10 38 52.8          19.1 V D0421G96
2010-050A     C2012 03 21.23756 10 52 35.61 +10 38 46.5          18.8 V D0421G96
2010-050A     C2012 03 21.23980 10 52 35.00 +10 38 45.3          19.0 V D0421703
2010-050A     C2012 03 21.24280 10 52 34.21 +10 38 40.2          19.1 V D0421G96
2010-050A     C2012 03 21.24803 10 52 32.77 +10 38 33.7          18.7 V D0421G96
2010-050A     C2012 03 21.25001 10 52 32.23 +10 38 31.7          19.0 V D0421703
2010-050A     C2012 03 21.26022 10 52 29.42 +10 38 18.8          18.9 V D0421703
2010-050A     C2012 03 21.27042 10 52 26.50 +10 38 04.9          18.8 V D0421703
2010-050A     C2012 03 21.31977 10 52 13.29 +10 36 52.4          19.0 V D0421703
2010-050A     C2012 03 21.34393 10 52 07.28 +10 36 12.9          18.7 V D0421703
2010-050A     C2012 03 21.35593 10 52 04.40 +10 35 52.2          18.7 V D0421703

Station data:
(106) Crni Vrh (N45.9460 E14.0711).  0.36-m Schmidt-Cassegrain.
(160) Castelmartini (N43.82311 E10.84144).
(204) Schiaparelli Observatory (N45.8680 E8.7708).   Observer L. Buzzi.
    0.38-m f/6.8 reflector + CCD.
(291) LPL/Spacewatch II (N31.9617 W111.5991).  1.8-m f/2.7 reflector.
(300) Bisei Spaceguard Center-BATTeRS (N34.67201 E133.54444).  0.25-m f/5.0
    reflector.
(510) Siegen (N50.9103 E8.0256).
(595) Farra d'Isonzo (N45.91578 E13.52578).   Observers L. Bittesini, G.
    Lombardi, E. Pettarin, F. Piani, F. Fabris.  Measurers G. Lombardi, E.
    Pettarin, L. Bittesini.  0.40-m f/4.5 reflector + CCD.
(703) Catalina Sky Survey (N32.41712 W110.73264).   Observers R. A. Kowalski,
    E. J. Christensen, A. R. Gibbs, A.Odell.  Measurers E. C. Beshore, E. J.
    Christensen, G. J. Garradd, A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M.
    Larson, R. H. McNaught, A. R. Gibbs, J. D. Ahern, A. Boattini.  0.68-m
    Schmidt + CCD.
(807) Cerro Tololo Observatory, La Serena (S30.1692 W70.8059).   Observers M.
    Holman, J. Kavelaars, T. Grav, W. Fraser.  Measurer M. Holman.  4-m Blanco
    reflector + CCD.
(854) Sabino Canyon Observatory, Tucson (N32.29991 W110.82005).   Observer J.
    E. McGaha.  0.36-m f/10.0 Schmidt-Cassegrain + CCD.
(900) Moriyama (N35.04980 E135.98994).  0.25-m Schmidt-Cassegrain.
(A50) Andrushivka Astronomical Observatory (N50.0006 E28.9973).  0.6-m
    reflector.
(D90) RAS Observatory, Moorook (S34.2694 E140.3420).
(D96) Tzec Maun Observatory, Moorook (S34.26891 E140.34216).
(F51) Pan-STARRS 1, Haleakala (N20.70720 W156.25591).   Observers N. Primak,
    A. Schultz, S. Watters, J. Thiel, T. Goggia.  Measurer PS1 Science
    Consortium.  1.8-m Ritchey-Chretien + CCD.
(F65) Haleakala-Faulkes Telescope North (N20.7072 W156.2576).
(G48) Doc Greiner Research Obs., Rancho Hildalgo (N31.94700 W108.89852).
(G96) Mt. Lemmon Survey (N32.44287 W110.78872).   Observers E. J. Christensen,
    A. R. Gibbs, R. A. Kowalski.  Measurers E. C. Beshore, E. J. Christensen,
    G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M.
    Larson, R. H. McNaught, R. H., J. D. Ahern, A. Boattini.  1.5-m reflector +
    CCD.
(H06) RAS Observatory, Mayhill (N32.90346 W105.52866).   Observers E. Guido,
    G. Sostero, K. Sokolovsky.  Measurers E. Guido, G. Sostero.  0.25-m f/3.4
    reflector + CCD.
(H21) Astronomical Research Observatory, Westfield (N39.48311 W87.96827).
(H36) Sandlot Observatory, Scranton (N38.7977 W95.7064).   Observer G. Hug.
    0.56-m reflector + CCD.
(J04) ESA Optical Ground Station, Tenerife (N28.30102 W16.51183).
(J43) Oukaimeden Observatory, Marrakech (N31.20655 W7.86646).   Observer C.
    Rinner.  Measurers C. Rinner, M. Ory.  0.5-m f/3 reflector + CCD.
(J75) OAM Observatory, La Sagra (N37.98249 W2.56529).   Observers S. Sanchez,
    J. Nomen, R. Stoss, A. Cikota, S. Cikota, J. Rodriguez, W. K. Y. Yeung, M.
    Hurtado, J. A. Jaume.  0.45-m f/2.8 reflector + CCD.

Orbital elements:
2010-050A = SM999CF = Chang'e 2 probe
   Perihelion 2012 Feb 11.538526 TT = 12:55:28 (JD 2455969.038526)
Epoch 2012 Mar 18.0 TT; AMR 0.028373 m2/kg             Find_Orb
M  33.6540751            (2000.0)            P               Q
n   0.9490320401   Peri.  131.7486843   -0.7910611481   -0.6117366962
a   1.0255310153   Node    10.5361946    0.5601340234   -0.7247833625
e   0.022873121    Incl.    0.2158183    0.2459108285   -0.3169657582
P   1.04/379.33d   H   28.0     U  2.3     q 1.0020739198  Q 1.0489881108
From 59 observations 2011 Dec. 20-2012 Mar. 21; mean residual 0".363.

Residuals in arcseconds:
110627 G96( 12d- 359'-)   110806 F51(4262- 1948+)   111202 J43( 5.5-  1.7-)
110627 G96( 12d- 359'-)   110806 F51(4262- 1948+)   111202 J43( 5.6-  1.8-)
110627 G96( 12d- 358'-)   110806 F51(4264- 1948+)   111202 J43( 5.4-  1.6-)
110627 G96( 12d- 358'-)   110806 F51(4266- 1948+)   111202 J43( 5.5-  1.7-)
110627 G96( 12d- 357'-)   110824 A50(4406-  697+)   111220 J04  .00   .34+
110627 G96( 12d- 357'-)   110824 A50(4407-  696+)   111220 J04  .09+  .22+
110627 G96( 12d- 357'-)   110824 A50(4407-  696+)   111220 J04  .11+  .34+
110627 H06( 12d- 355'-)   110824 A50(4413-  696+)   111220 J04  .00   .37+
110627 H06( 12d- 354'-)   110824 A50(4413-  697+)   111224 703  .40+  .34-
110627 H06( 12d- 354'-)   110824 A50(4414-  695+)   111224 703  .17-  .26-
110627 D96( 12d- 336'-)   110824 A50(4413-  696+)   111224 703  .28-  .28+
110627 D96( 12d- 334'-)   110824 A50(4413-  696+)   111224 703  .07+  .07-
110627 595( 11d- 337'-)   110824 A50(4418-  695+)   111224 H21  .25-  .31-
110627 595( 11d- 337'-)   110824 A50(4418-  695+)   111224 H21  .04-  .34-
110627 595( 11d- 337'-)   110824 A50(4418-  695+)   111224 H21  .10-  .30-
110628 204( 11d- 335'-)   110917 J75(3762-  564-)   111224 H21  .00   .09-
110628 204( 11d- 335'-)   110917 J75(3763-  564-)   111224 H21  .12-  .11-
110628 204( 11d- 335'-)   110917 J75(3764-  564-)   111224 H36  .44+  .35+
110628 807( 11d- 318'-)   110918 703(3750-  571-)   111224 H36  .07-  .18+
110628 807( 11d- 318'-)   110918 703(3751-  570-)   111224 H36  1.3+  .22-
110628 807( 11d- 317'-)   110918 703(3751-  570-)   111224 G96  .29-  .20-
110628 807( 11d- 317'-)   110918 703(3750-  571-)   111224 G96  .11-  .09-
110628 H36( 11d- 324'-)   111116 703( 353-  238-)   111224 G96  .02-  .14-
110628 H36( 11d- 324'-)   111116 703( 353-  239-)   111224 G96  .56-  .04+
110628 H36( 11d- 324'-)   111116 703( 353-  238-)   111224 G96  .39-  .05-
110628 D90( 11d- 302'-)   111116 703( 353-  237-)   111224 G96  .15-  .10-
110628 D90( 11d- 302'-)   111116 G48( 352-  235-)   111224 G96  .05+  .13-
110628 D90( 11d- 302'-)   111116 G48( 352-  236-)   111224 G96  .18-  .04+
110628 D90( 11d- 302'-)   111116 G48( 351-  236-)   120118 703  .37+  .08-
110628 300( 11d- 311'-)   111116 G48( 351-  236-)   120118 703  .34+  .01-
110628 300( 11d- 311'-)   111116 H06( 352-  236-)   120118 703  .14+  .91+
110628 300( 11d- 311'-)   111116 H06( 352-  237-)   120118 703  .57+  .23-
110628 300( 11d- 310'-)   111116 G48( 351-  236-)   120118 291  .12+  .13-
110628 300( 11d- 310'-)   111116 G48( 351-  236-)   120118 291  .27+  .11-
110628 300( 11d- 310'-)   111116 G48( 351-  236-)   120118 291  .07+  .05+
110628 300( 11d- 310'-)   111116 G48( 350-  236-)   120118 703  .64+  .22+
110728 F51(4425- 2033+)   111116 H06( 352-  237-)   120118 703  .16-  .04-
110728 F51(4451- 2034+)   111116 G48( 351-  236-)   120118 703  1.1-  .22+
110728 F51(4463- 2035+)   111116 G48( 351-  236-)   120118 703  .66-  .56+
110731 F51(4325- 2107+)   111116 G48( 351-  236-)   120118 291  .13+  .07+
110731 F51(4327- 2107+)   111116 854( 351-  236-)   120118 291  .01-  .03+
110731 F51(4328- 2107+)   111116 854( 351-  236-)   120118 291  .04+  .13-
110731 F51(4327- 2107+)   111116 854( 350-  235-)   120119 291  .24+  .05-
110801 H21(4222- 2064+)   111116 291( 347-  233-)   120119 291  .03-  .01+
110801 H21(4226- 2064+)   111116 291( 347-  233-)   120119 291  .28+  .06+
110801 H21(4230- 2064+)   111116 291( 347-  234-)   120130 703  .28-  .73+
110801 F65(4235- 2104+)   111116 900( 341-  231-)   120130 703  .13+  .26-
110801 F65(4236- 2104+)   111116 900( 340-  232-)   120130 703  .90-  1.2-
110801 F65(4236- 2104+)   111116 900( 340-  232-)   120317 106  .04+  .19-
110801 F65(4237- 2104+)   111116 510( 326-  226-)   120317 106  .10-  .31-
110801 F65(4238- 2104+)   111116 204( 326-  225-)   120317 106  .15+  .18+
110801 F65(4239- 2104+)   111116 204( 326-  225-)   120317 106  .36+  .02-
110801 F65(4240- 2104+)   111116 510( 325-  226-)   120321 G96  .05-  .12-
110801 F65(4241- 2104+)   111116 204( 326-  225-)   120321 G96  .34-  .21-
110801 F65(4242- 2104+)   111116 160( 325-  225-)   120321 703  .27+  .93+
110806 F51(4251- 1949+)   111116 510( 325-  225-)   120321 G96  .09+  .17-
110806 F51(4253- 1949+)   111116 160( 326-  225-)   120321 G96  .02-  .21-
110806 F51(4253- 1949+)   111116 160( 326-  225-)   120321 703  .65+  .08-
110806 F51(4255- 1949+)   111116 160( 325-  225-)   120321 703  .67+  .11+
110806 F51(4256- 1949+)   111122 703( 132-  118-)   120321 703  .92-  .20-
110806 F51(4258- 1948+)   111122 703( 132-  118-)   120321 703  .04-  .01+
110806 F51(4259- 1948+)   111122 703( 132-  118-)   120321 703  .18+  .15+
110806 F51(4260- 1948+)   111122 703( 131-  117-)   120321 703  .80-  .06+

Ephemerides (500):
Date (UT)    RA              Dec         delta   r     elong  mag
---- -- --  ------------   ------------  ------ ------ -----  ---
2012 03 21  10 52 27.393   +10 48 45.30  .01138 1.0068 159.4 19.3
2012 03 22  10 52 32.830   +10 26 39.97  .01137 1.0071 158.7 19.3
2012 03 23  10 52 42.190   +10 03 55.67  .01136 1.0073 157.9 19.3
2012 03 24  10 52 55.949   +09 40 31.04  .01135 1.0075 157.2 19.3
2012 03 25  10 53 14.536   +09 16 25.08  .01134 1.0077 156.4 19.3
2012 03 26  10 53 38.325   +08 51 37.05  .01133 1.0079 155.7 19.4
2012 03 27  10 54 07.636   +08 26 06.47  .01132 1.0081 155.0 19.4
2012 03 28  10 54 42.726   +07 59 53.13  .01131 1.0084 154.3 19.4
2012 03 29  10 55 23.794   +07 32 57.00  .01130 1.0086 153.7 19.4
2012 03 30  10 56 10.980   +07 05 18.29  .01129 1.0088 153.1 19.4
2012 03 31  10 57 04.360   +06 36 57.38  .01127 1.0090 152.5 19.5
2012 04 01  10 58 03.946   +06 07 54.87  .01126 1.0092 151.9 19.5
2012 04 02  10 59 09.679   +05 38 11.60  .01124 1.0094 151.3 19.5
2012 04 03  11 00 21.427   +05 07 48.64  .01121 1.0096 150.8 19.5
2012 04 04  11 01 38.976   +04 36 47.37  .01119 1.0099 150.3 19.5
2012 04 05  11 03 02.042   +04 05 09.38  .01115 1.0101 149.8 19.5
2012 04 06  11 04 30.280   +03 32 56.43  .01112 1.0103 149.4 19.5
2012 04 07  11 06 03.321   +03 00 10.33  .01108 1.0105 148.9 19.5
2012 04 08  11 07 40.815   +02 26 52.66  .01104 1.0107 148.5 19.5
2012 04 09  11 09 22.483   +01 53 04.59  .01100 1.0109 148.1 19.5
2012 04 10  11 11 08.163   +01 18 46.71  .01095 1.0111 147.7 19.5
2012 04 11  11 12 57.835   +00 43 58.91  .01090 1.0113 147.3 19.5
2012 04 12  11 14 51.619   +00 08 40.45  .01085 1.0115 147.0 19.5
2012 04 13  11 16 49.768   -00 27 09.94  .01080 1.0117 146.7 19.5
2012 04 14  11 18 52.634   -01 03 33.93  .01074 1.0120 146.4 19.5
2012 04 15  11 21 00.647   -01 40 33.44  .01068 1.0122 146.1 19.5
2012 04 16  11 23 14.294   -02 18 10.54  .01063 1.0124 145.8 19.5
2012 04 17  11 25 34.097   -02 56 27.36  .01057 1.0126 145.6 19.5
2012 04 18  11 28 00.602   -03 35 26.03  .01051 1.0128 145.4 19.5
2012 04 19  11 30 34.368   -04 15 08.65  .01045 1.0130 145.2 19.5
2012 04 20  11 33 15.960   -04 55 37.22  .01039 1.0132 145.0 19.5
2012 04 21  11 36 05.942   -05 36 53.63  .01033 1.0134 144.9 19.5
2012 04 22  11 39 04.873   -06 18 59.60  .01027 1.0137 144.8 19.5
2012 04 23  11 42 13.297   -07 01 56.69  .01020 1.0139 144.8 19.5
2012 04 24  11 45 31.748   -07 45 46.20  .01014 1.0141 144.8 19.5
2012 04 25  11 49 00.741   -08 30 29.17  .01007 1.0143 144.9 19.4
2012 04 26  11 52 40.773   -09 16 06.34  .01001 1.0145 145.0 19.4
2012 04 27  11 56 32.322   -10 02 38.11  .00994 1.0147 145.1 19.4
2012 04 28  12 00 35.842   -10 50 04.46  .00987 1.0149 145.3 19.4
2012 04 29  12 04 51.762   -11 38 24.92  .00979 1.0152 145.5 19.4
2012 04 30  12 09 20.478   -12 27 38.44  .00972 1.0154 145.8 19.3
2012 05 01  12 14 02.346   -13 17 43.36  .00964 1.0156 146.1 19.3
2012 05 02  12 18 57.671   -14 08 37.21  .00957 1.0158 146.5 19.3
2012 05 03  12 24 06.705   -15 00 16.66  .00949 1.0160 146.9 19.3
2012 05 04  12 29 29.641   -15 52 37.33  .00941 1.0162 147.4 19.2
2012 05 05  12 35 06.625   -16 45 33.82  .00932 1.0165 147.9 19.2
2012 05 06  12 40 57.785   -17 38 59.59  .00924 1.0167 148.5 19.2
2012 05 07  12 47 03.265   -18 32 47.12  .00915 1.0169 149.1 19.1
2012 05 08  12 53 23.272   -19 26 48.02  .00906 1.0171 149.7 19.1
2012 05 09  12 59 58.119   -20 20 53.19  .00898 1.0173 150.4 19.0
2012 05 10  13 06 48.241   -21 14 52.94  .00889 1.0175 151.1 19.0
2012 05 11  13 13 54.189   -22 08 36.98  .00880 1.0178 151.9 19.0
2012 05 12  13 21 16.606   -23 01 54.35  .00872 1.0180 152.7 18.9
2012 05 13  13 28 56.190   -23 54 33.29  .00863 1.0182 153.5 18.9
2012 05 14  13 36 53.652   -24 46 21.12  .00855 1.0184 154.4 18.8
2012 05 15  13 45 09.683   -25 37 04.09  .00848 1.0186 155.3 18.8
2012 05 16  13 53 44.912   -26 26 27.38  .00840 1.0188 156.2 18.7
2012 05 17  14 02 39.880   -27 14 15.02  .00833 1.0190 157.2 18.7
2012 05 18  14 11 55.000   -28 00 10.00  .00827 1.0192 158.2 18.6
2012 05 19  14 21 30.529   -28 43 54.37  .00820 1.0194 159.2 18.6
2012 05 20  14 31 26.533   -29 25 09.37  .00815 1.0196 160.3 18.5
2012 05 21  14 41 42.852   -30 03 35.73  .00810 1.0198 161.3 18.5
2012 05 22  14 52 19.070   -30 38 53.91  .00805 1.0200 162.4 18.4
2012 05 23  15 03 14.482   -31 10 44.49  .00801 1.0202 163.4 18.4
2012 05 24  15 14 28.077   -31 38 48.58  .00797 1.0204 164.5 18.4
2012 05 25  15 25 58.518   -32 02 48.29  .00794 1.0206 165.5 18.3
2012 05 26  15 37 44.140   -32 22 27.22  .00791 1.0208 166.4 18.3
2012 05 27  15 49 42.960   -32 37 30.98  .00789 1.0209 167.2 18.2
2012 05 28  16 01 52.693   -32 47 47.66  .00788 1.0211 168.0 18.2
2012 05 29  16 14 10.792   -32 53 08.29  .00787 1.0213 168.5 18.2
2012 05 30  16 26 34.482   -32 53 27.19  .00787 1.0214 168.9 18.2
2012 05 31  16 39 00.811   -32 48 42.26  .00788 1.0216 169.0 18.2
2012 06 01  16 51 26.705   -32 38 55.06  .00789 1.0218 168.9 18.2
2012 06 02  17 03 49.027   -32 24 10.88  .00790 1.0219 168.6 18.2
2012 06 03  17 16 04.654   -32 04 38.54  .00792 1.0221 168.0 18.2
2012 06 04  17 28 10.562   -31 40 30.16  .00794 1.0222 167.3 18.2
2012 06 05  17 40 03.924   -31 12 00.80  .00797 1.0223 166.4 18.3
2012 06 06  17 51 42.196   -30 39 27.97  .00800 1.0225 165.4 18.3
2012 06 07  18 03 03.187   -30 03 11.18  .00804 1.0226 164.4 18.4
2012 06 08  18 14 05.096   -29 23 31.34  .00808 1.0227 163.3 18.4
2012 06 09  18 24 46.522   -28 40 50.27  .00812 1.0229 162.1 18.5
2012 06 10  18 35 06.453   -27 55 30.14  .00816 1.0230 161.0 18.5
2012 06 11  18 45 04.241   -27 07 53.02  .00821 1.0231 159.9 18.6
2012 06 12  18 54 39.562   -26 18 20.42  .00827 1.0232 158.7 18.6
2012 06 13  19 03 52.369   -25 27 13.02  .00832 1.0233 157.7 18.7
2012 06 14  19 12 42.851   -24 34 50.35  .00838 1.0234 156.6 18.7
2012 06 15  19 21 11.389   -23 41 30.64  .00844 1.0235 155.6 18.8
2012 06 16  19 29 18.526   -22 47 30.64  .00851 1.0236 154.6 18.8
2012 06 17  19 37 04.936   -21 53 05.61  .00857 1.0237 153.6 18.9
2012 06 18  19 44 31.396   -20 58 29.20  .00864 1.0238 152.7 18.9
2012 06 19  19 51 38.770   -20 03 53.51  .00871 1.0238 151.9 18.9
2012 06 20  19 58 27.987   -19 09 29.14  .00879 1.0239 151.0 19.0
2012 06 21  20 05 00.028   -18 15 25.16  .00886 1.0240 150.3 19.0
2012 06 22  20 11 15.905   -17 21 49.28  .00894 1.0241 149.5 19.1
2012 06 23  20 17 16.650   -16 28 47.89  .00902 1.0241 148.8 19.1
2012 06 24  20 23 03.294   -15 36 26.17  .00909 1.0242 148.2 19.1
2012 06 25  20 28 36.853   -14 44 48.23  .00917 1.0242 147.6 19.2
2012 06 26  20 33 58.310   -13 53 57.22  .00926 1.0243 147.0 19.2
2012 06 27  20 39 08.595   -13 03 55.44  .00934 1.0244 146.5 19.2
2012 06 28  20 44 08.565   -12 14 44.56  .00942 1.0244 146.0 19.3