Comet 100P/Hartley is at Opposition (3.646 AU) on the 21st November 2013.
Ephemeris
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag 2013 11 20 03 36 43.3 +32 16 13 3.6480 4.6171 167.3 2.7 25.1 2013 11 21 03 35 50.0 +32 16 00 3.6464 4.6155 167.4 2.7 25.1 2013 11 22 03 34 56.8 +32 15 42 3.6451 4.6140 167.4 2.7 25.1 2013 11 23 03 34 03.7 +32 15 19 3.6442 4.6124 167.2 2.7 25.1 2013 11 24 03 33 10.6 +32 14 51 3.6435 4.6109 167.0 2.8 25.1 2013 11 25 03 32 17.6 +32 14 18 3.6432 4.6093 166.6 2.8 25.1 2013 11 26 03 31 24.8 +32 13 41 3.6432 4.6077 166.2 2.9 25.1 2013 11 27 03 30 32.2 +32 12 59 3.6436 4.6062 165.7 3.0 25.1 2013 11 28 03 29 39.9 +32 12 12 3.6442 4.6046 165.1 3.2 25.1 2013 11 29 03 28 47.8 +32 11 22 3.6452 4.6030 164.4 3.3 25.1 2013 11 30 03 27 56.1 +32 10 26 3.6465 4.6014 163.7 3.5 25.1
