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Post Info TOPIC: Comet P/2004 H2 = 2013 C1 (LARSEN)


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Date:
Comet 280P/Larsen
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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


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RE: Comet P/2004 H2 = 2013 C1 (LARSEN)
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Comet 280P/Larsen is at Opposition (1.984 AU) on the 13th July 2014 



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Date:
Comet 280P/Larsen
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Comet 280P/Larsen makes its closest approach to the Earth (1.967 AU) on the 2nd July 2014

Ephemeris

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


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Comet 280P/Larsen is at Perihelion (2.636 AU) on the 11th December 2013



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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


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Posts: 131433
Date:
RE: Comet P/2004 H2 = 2013 C1 (LARSEN)
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Comet 280P/Larsen is at Opposition (2.217 AU) on the 9th March, 2013



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Posts: 131433
Date:
Comet 280P/Larsen
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Ephemeris

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


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Posts: 131433
Date:
Comet P/2004 H2 = 2013 C1 (LARSEN)
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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



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