Comet 280P/Larsen is at Opposition (3.516 AU) in the constellation Aquarius on the 13th September 2015.
Ephemeris
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag 2015 09 10 23 39 15.8 -12 29 10 3.5063 4.5015 170.0 2.2 21.8 2015 09 11 23 38 41.5 -12 34 04 3.5092 4.5049 170.3 2.2 21.8 2015 09 12 23 38 07.1 -12 38 54 3.5124 4.5083 170.5 2.1 21.8 2015 09 13 23 37 32.7 -12 43 42 3.5159 4.5117 170.5 2.1 21.8 2015 09 14 23 36 58.2 -12 48 26 3.5198 4.5151 170.5 2.1 21.8 2015 09 15 23 36 23.8 -12 53 06 3.5239 4.5185 170.3 2.2 21.8 2015 09 16 23 35 49.4 -12 57 43 3.5283 4.5219 169.9 2.2 21.8 2015 09 17 23 35 15.0 -13 02 16 3.5330 4.5253 169.5 2.3 21.8 2015 09 18 23 34 40.7 -13 06 44 3.5381 4.5286 169.0 2.4 21.8 2015 09 19 23 34 06.5 -13 11 09 3.5434 4.5320 168.3 2.6 21.8 2015 09 20 23 33 32.5 -13 15 29 3.5490 4.5354 167.7 2.7 21.8 2015 09 21 23 32 58.6 -13 19 44 3.5550 4.5388 166.9 2.9 21.8 2015 09 22 23 32 24.9 -13 23 54 3.5612 4.5421 166.1 3.0 21.8 2015 09 23 23 31 51.5 -13 28 00 3.5677 4.5455 165.3 3.2 21.8 2015 09 24 23 31 18.2 -13 32 00 3.5745 4.5489 164.4 3.4 21.8 2015 09 25 23 30 45.3 -13 35 56 3.5816 4.5522 163.5 3.6 21.9 2015 09 26 23 30 12.6 -13 39 46 3.5890 4.5556 162.5 3.8 21.9 2015 09 27 23 29 40.3 -13 43 31 3.5967 4.5589 161.6 4.0 21.9 2015 09 28 23 29 08.2 -13 47 10 3.6047 4.5623 160.6 4.2 21.9 2015 09 29 23 28 36.6 -13 50 44 3.6129 4.5656 159.7 4.4 21.9 2015 09 30 23 28 05.3 -13 54 12 3.6215 4.5690 158.7 4.6 21.9
Comet 280P/Larsen is at Opposition (1.984 AU) on the 13th July 2014
Comet 280P/Larsen makes its closest approach to the Earth (1.967 AU) on the 2nd July 2014
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag 2014 07 01 19 31 09.1 -14 26 35 1.9674 2.9607 164.9 5.1 18.7 2014 07 02 19 30 30.2 -14 31 20 1.9673 2.9636 165.9 4.8 18.7 2014 07 03 19 29 51.0 -14 36 09 1.9675 2.9666 166.9 4.5 18.7 2014 07 04 19 29 11.4 -14 41 01 1.9679 2.9695 167.8 4.1 18.7 2014 07 05 19 28 31.4 -14 45 57 1.9686 2.9724 168.7 3.8 18.7 2014 07 06 19 27 51.3 -14 50 57 1.9696 2.9753 169.6 3.5 18.7 2014 07 07 19 27 10.9 -14 56 00 1.9709 2.9783 170.5 3.2 18.7 2014 07 08 19 26 30.4 -15 01 06 1.9724 2.9812 171.3 3.0 18.7 2014 07 09 19 25 49.8 -15 06 14 1.9741 2.9842 172.0 2.7 18.7 2014 07 10 19 25 09.1 -15 11 25 1.9762 2.9871 172.6 2.5 18.7 2014 07 11 19 24 28.5 -15 16 39 1.9785 2.9901 173.0 2.4 18.7 2014 07 12 19 23 47.8 -15 21 55 1.9811 2.9931 173.3 2.3 18.7 2014 07 13 19 23 07.3 -15 27 12 1.9840 2.9961 173.5 2.2 18.8 2014 07 14 19 22 26.8 -15 32 32 1.9871 2.9991 173.4 2.2 18.8 2014 07 15 19 21 46.6 -15 37 53 1.9905 3.0021 173.1 2.3 18.8 2014 07 16 19 21 06.5 -15 43 15 1.9942 3.0051 172.7 2.5 18.8 2014 07 17 19 20 26.7 -15 48 39 1.9981 3.0081 172.1 2.6 18.8 2014 07 18 19 19 47.2 -15 54 04 2.0023 3.0112 171.5 2.9 18.8 2014 07 19 19 19 08.1 -15 59 29 2.0068 3.0142 170.7 3.1 18.8 2014 07 20 19 18 29.3 -16 04 55 2.0116 3.0173 169.9 3.4 18.8 2014 07 21 19 17 51.0 -16 10 22 2.0166 3.0203 169.0 3.7 18.8 2014 07 22 19 17 13.2 -16 15 49 2.0219 3.0234 168.1 4.0 18.8 2014 07 23 19 16 35.9 -16 21 15 2.0275 3.0264 167.2 4.3 18.8 2014 07 24 19 15 59.2 -16 26 42 2.0333 3.0295 166.2 4.6 18.9 2014 07 25 19 15 23.1 -16 32 08 2.0394 3.0326 165.2 4.9 18.9 2014 07 26 19 14 47.7 -16 37 34 2.0457 3.0357 164.2 5.2 18.9 2014 07 27 19 14 13.0 -16 42 59 2.0524 3.0388 163.2 5.5 18.9 2014 07 28 19 13 39.0 -16 48 23 2.0593 3.0419 162.2 5.9 18.9 2014 07 29 19 13 05.8 -16 53 46 2.0664 3.0450 161.1 6.2 18.9 2014 07 30 19 12 33.5 -16 59 08 2.0738 3.0481 160.1 6.5 18.9 2014 07 31 19 12 01.9 -17 04 28 2.0815 3.0513 159.1 6.8 18.9
Comet 280P/Larsen is at Perihelion (2.636 AU) on the 11th December 2013
Comet 280P/Larsen makes its closest approach to the Earth (2.191 AU) on the 23rd March, 2013
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag 2013 03 21 11 31 31.8 +15 05 44 2.1918 3.1581 163.1 5.3 19.2 2013 03 22 11 30 55.0 +15 11 48 2.1915 3.1547 162.2 5.6 19.2 2013 03 23 11 30 18.4 +15 17 44 2.1914 3.1514 161.2 5.8 19.2 2013 03 24 11 29 42.2 +15 23 32 2.1917 3.1481 160.3 6.1 19.2 2013 03 25 11 29 06.3 +15 29 12 2.1922 3.1448 159.3 6.4 19.2 2013 03 26 11 28 30.7 +15 34 44 2.1930 3.1415 158.3 6.7 19.2 2013 03 27 11 27 55.6 +15 40 07 2.1941 3.1382 157.3 7.1 19.2 2013 03 28 11 27 20.9 +15 45 21 2.1954 3.1349 156.3 7.4 19.2 2013 03 29 11 26 46.7 +15 50 26 2.1970 3.1316 155.2 7.7 19.2 2013 03 30 11 26 13.1 +15 55 22 2.1988 3.1283 154.2 8.0 19.2 2013 03 31 11 25 40.0 +16 00 09 2.2009 3.1250 153.2 8.3 19.2
Comet 280P/Larsen is at Opposition (2.217 AU) on the 9th March, 2013
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag 2013 03 08 11 39 31.8 +13 37 45 2.2214 3.2019 169.2 3.3 19.3 2013 03 09 11 38 55.9 +13 44 58 2.2173 3.1985 169.4 3.3 19.3 2013 03 10 11 38 19.7 +13 52 08 2.2136 3.1951 169.4 3.3 19.3 2013 03 11 11 37 43.2 +13 59 15 2.2102 3.1917 169.3 3.3 19.3 2013 03 12 11 37 06.5 +14 06 17 2.2071 3.1883 169.1 3.4 19.3 2013 03 13 11 36 29.5 +14 13 16 2.2042 3.1850 168.7 3.5 19.2 2013 03 14 11 35 52.4 +14 20 09 2.2016 3.1816 168.3 3.6 19.2 2013 03 15 11 35 15.1 +14 26 58 2.1994 3.1782 167.7 3.8 19.2 2013 03 16 11 34 37.8 +14 33 41 2.1974 3.1748 167.1 4.0 19.2 2013 03 17 11 34 00.5 +14 40 18 2.1957 3.1715 166.4 4.2 19.2 2013 03 18 11 33 23.1 +14 46 50 2.1943 3.1681 165.6 4.5 19.2 2013 03 19 11 32 45.9 +14 53 15 2.1932 3.1648 164.8 4.7 19.2 2013 03 20 11 32 08.7 +14 59 33 2.1923 3.1614 164.0 5.0 19.2
Orbital elements: P/2004 H2 (Larsen) Epoch 2013 Dec. 14.0 TT = JDT 2456640.5 T 2013 Dec. 11.03943 TT MPC q 2.6359616 (2000.0) P Q n 0.10238593 Peri. 104.59786 -0.54240994 +0.82610417 a 4.5252494 Node 131.50849 -0.82773771 -0.49440606 e 0.4174992 Incl. 11.77240 -0.14367236 -0.27039702 P 9.63 From 67 observations 2004 Apr. 19-2013 Feb. 6
MPEC 2013 - C25
Key to Orbital elements