* Astronomy

Asteroid (113) Amalthea is at opposition on the 31st July, 2011.

Magnitude=11.4
Distance to Sun=2.414 AU  
Distance to Earth=1.399 AU  

(113) Amalthea  is a fairly typical rocky main-belt asteroid orbiting in the inner regions of the belt. It was discovered by R. Luther on March 12, 1871.
Amalthea is thought to be a fragment from the mantle of a Vesta-sized parent body that broke up around one billion years ago, with the other major remnant being (9) Metis.
The name comes from Amalthea of Greek mythology. One of Jupiter's inner small satellites, unrelated to 113 Amalthea, is also called Amalthea.
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Ephemeris

Date       UT      R.A. (J2000) Decl.    Delta     r     El.    Ph.   V

2011 07 30 000000 20 41 07.4 -18 52 01   1.398   2.413  178.5   0.6  11.5
2011 07 31 000000 20 40 09.1 -18 58 06   1.399   2.414  179.4   0.3  11.4
2011 08 01 000000 20 39 10.8 -19 04 10   1.400   2.415  178.8   0.5  11.5
2011 08 02 000000 20 38 12.6 -19 10 10   1.401   2.416  177.7   1.0  11.5
2011 08 03 000000 20 37 14.6 -19 16 08   1.403   2.417  176.5   1.5  11.5
2011 08 04 000000 20 36 16.8 -19 22 03   1.405   2.418  175.3   2.0  11.6
2011 08 05 000000 20 35 19.4 -19 27 54   1.407   2.419  174.1   2.5  11.6
2011 08 06 000000 20 34 22.3 -19 33 42   1.410   2.420  172.9   3.0  11.6
2011 08 07 000000 20 33 25.7 -19 39 25   1.413   2.421  171.7   3.5  11.7
2011 08 08 000000 20 32 29.7 -19 45 04   1.416   2.422  170.5   4.0  11.7
2011 08 09 000000 20 31 34.3 -19 50 38   1.419   2.423  169.3   4.4  11.7
2011 08 10 000000 20 30 39.6 -19 56 06   1.422   2.423  168.1   4.9  11.7
2011 08 11 000000 20 29 45.7 -20 01 30   1.426   2.424  166.9   5.4  11.8
2011 08 12 000000 20 28 52.6 -20 06 48   1.430   2.425  165.8   5.9  11.8
2011 08 13 000000 20 28 00.3 -20 12 01   1.434   2.426  164.6   6.4  11.8
2011 08 14 000000 20 27 09.1 -20 17 07   1.439   2.427  163.4   6.8  11.8
2011 08 15 000000 20 26 18.8 -20 22 07   1.444   2.428  162.2   7.3  11.9
2011 08 16 000000 20 25 29.6 -20 27 01   1.449   2.429  161.1   7.8  11.9
2011 08 17 000000 20 24 41.5 -20 31 49   1.454   2.430  159.9   8.2  11.9
2011 08 18 000000 20 23 54.6 -20 36 30   1.459   2.431  158.8   8.7  11.9
2011 08 19 000000 20 23 08.9 -20 41 04   1.465   2.432  157.6   9.1  12.0