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Post Info TOPIC: 46P/Wirtanen


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Comet 46P/Wirtanen
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Close Approach Comets

In 2017 and 2018, three comets will pass near the Earth.
Their names are 41P/Tuttle-Giacobini-Kresak, 45P/Honda-Mrkos-Pajdusakova, and 46P/Wirtanen. Astronomers call them "41P", "45P", and "46P", for short.
At closest approach on April 1, 41P was only 56 times farther from Earth than the Moon. 45P was even closer at 31 lunar distances when it flew by on February 11. And 46P approaches 30 lunar distances, on December 16, 2018.

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Spoiler

Ed ~ Comet 46P/Wirtanen passes between the Hyades and Pleiades on the 16th December 2018

Distance 0.0772 AU



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Comet 46P/Wirtanen is at Opposition (3.759 AU) in the constellation Scorpius on the 25th May 2015



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Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 05 01    16 25 03.1 -16 22 49   3.7932  4.7095   152.5     5.7  22.0
2015 05 02    16 24 23.1 -16 21 32   3.7884  4.7121   153.6     5.5  22.0
2015 05 03    16 23 42.4 -16 20 13   3.7838  4.7146   154.7     5.2  22.0
2015 05 04    16 23 01.2 -16 18 54   3.7795  4.7172   155.8     5.0  22.0
2015 05 05    16 22 19.5 -16 17 35   3.7755  4.7197   156.9     4.8  22.0
2015 05 06    16 21 37.3 -16 16 15   3.7718  4.7222   158.0     4.6  22.0
2015 05 07    16 20 54.5 -16 14 55   3.7684  4.7247   159.1     4.4  22.0
2015 05 08    16 20 11.4 -16 13 34   3.7653  4.7272   160.2     4.1  22.0
2015 05 09    16 19 27.8 -16 12 14   3.7624  4.7297   161.3     3.9  22.0
2015 05 10    16 18 43.8 -16 10 53   3.7599  4.7322   162.4     3.7  22.0
2015 05 11    16 17 59.4 -16 09 32   3.7577  4.7347   163.5     3.5  22.0
2015 05 12    16 17 14.7 -16 08 11   3.7557  4.7372   164.6     3.2  22.0
2015 05 13    16 16 29.6 -16 06 50   3.7541  4.7396   165.7     3.0  22.0
2015 05 14    16 15 44.3 -16 05 29   3.7528  4.7421   166.8     2.8  22.0
2015 05 15    16 14 58.6 -16 04 08   3.7518  4.7445   167.8     2.6  22.0
2015 05 16    16 14 12.8 -16 02 47   3.7510  4.7470   168.9     2.4  22.0
2015 05 17    16 13 26.7 -16 01 27   3.7506  4.7494   169.9     2.1  22.0
2015 05 18    16 12 40.5 -16 00 06   3.7506  4.7518   170.9     1.9  22.0
2015 05 19    16 11 54.1 -15 58 47   3.7508  4.7542   171.8     1.7  22.0
2015 05 20    16 11 07.5 -15 57 27   3.7513  4.7566   172.7     1.6  22.0
2015 05 21    16 10 20.9 -15 56 08   3.7522  4.7590   173.5     1.4  22.0
2015 05 22    16 09 34.3 -15 54 50   3.7534  4.7614   174.1     1.2  22.0
2015 05 23    16 08 47.6 -15 53 32   3.7549  4.7638   174.7     1.1  22.0
2015 05 24    16 08 00.9 -15 52 15   3.7567  4.7662   175.0     1.1  22.0
2015 05 25    16 07 14.2 -15 50 59   3.7588  4.7685   175.0     1.1  22.1
2015 05 26    16 06 27.6 -15 49 43   3.7612  4.7709   174.8     1.1  22.1
2015 05 27    16 05 41.1 -15 48 29   3.7640  4.7732   174.4     1.2  22.1
2015 05 28    16 04 54.7 -15 47 15   3.7671  4.7756   173.7     1.3  22.1
2015 05 29    16 04 08.5 -15 46 03   3.7704  4.7779   173.0     1.5  22.1
2015 05 30    16 03 22.4 -15 44 51   3.7741  4.7802   172.1     1.7  22.1
2015 05 31    16 02 36.6 -15 43 41   3.7781  4.7825   171.2     1.9  22.1


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Comet 46P/Wirtanen is at Opposition (2.090 AU) on the 21st April 2014

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   Mag
2014 04 20    14 11 11.9 +01 28 35   2.0841  3.0689   166.2     4.5  17.9
2014 04 21    14 10 08.4 +01 32 01   2.0902  3.0753   166.2     4.5  17.9
2014 04 22    14 09 05.0 +01 35 18   2.0967  3.0818   166.1     4.5  17.9
2014 04 23    14 08 02.0 +01 38 28   2.1035  3.0883   165.9     4.5  18.0
2014 04 24    14 06 59.3 +01 41 30   2.1106  3.0947   165.6     4.6  18.0
2014 04 25    14 05 57.1 +01 44 24   2.1179  3.1012   165.2     4.7  18.0
2014 04 26    14 04 55.2 +01 47 10   2.1256  3.1076   164.7     4.9  18.0
2014 04 27    14 03 53.9 +01 49 47   2.1335  3.1140   164.2     5.1  18.0
2014 04 28    14 02 53.1 +01 52 15   2.1418  3.1204   163.6     5.2  18.1
2014 04 29    14 01 53.0 +01 54 35   2.1503  3.1267   162.9     5.4  18.1
2014 04 30    14 00 53.5 +01 56 46   2.1592  3.1331   162.1     5.7  18.1


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Comet 46P/Wirtanen makes its closest approach to the Earth (2.022 AU) on the 30th March 2014

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   Mag
2014 03 29    14 33 40.4 -00 11 22   2.0225  2.9227   148.8    10.2  17.5
2014 03 30    14 32 45.5 -00 06 09   2.0224  2.9295   149.9     9.8  17.5
2014 03 31    14 31 49.6 -00 00 58   2.0225  2.9363   151.0     9.5  17.5
2014 04 01    14 30 52.8 +00 04 11   2.0229  2.9430   152.1     9.2  17.6
2014 04 02    14 29 55.1 +00 09 17   2.0235  2.9498   153.1     8.8  17.6
2014 04 03    14 28 56.6 +00 14 21   2.0244  2.9565   154.2     8.5  17.6
2014 04 04    14 27 57.4 +00 19 21   2.0256  2.9632   155.2     8.1  17.6
2014 04 05    14 26 57.4 +00 24 19   2.0271  2.9699   156.2     7.8  17.6
2014 04 06    14 25 56.8 +00 29 12   2.0289  2.9766   157.2     7.5  17.6
2014 04 07    14 24 55.6 +00 34 02   2.0309  2.9833   158.2     7.2  17.7
2014 04 08    14 23 53.8 +00 38 47   2.0332  2.9900   159.1     6.9  17.7
2014 04 09    14 22 51.6 +00 43 28   2.0359  2.9966   160.0     6.6  17.7
2014 04 10    14 21 49.0 +00 48 03   2.0388  3.0033   160.9     6.3  17.7


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RE: 46P/Wirtanen
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Comet 46P/Wirtanen was discovered photographically on January 17, 1948
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Comet 46P/Wirtanen is at perihelion (1.052 AU) on the 9th July, 2013.



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Comet 46P/Wirtanen
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Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   Mag
2013 07 04    05 46 38.3 +22 20 00   2.0021  1.0546    15.1    14.6  10.9
2013 07 05    05 51 12.3 +22 28 43   2.0023  1.0538    15.0    14.5  10.8
2013 07 06    05 55 46.7 +22 36 57   2.0026  1.0531    14.9    14.4  10.8
2013 07 07    06 00 21.5 +22 44 41   2.0030  1.0526    14.8    14.3  10.8
2013 07 08    06 04 56.6 +22 51 56   2.0036  1.0523    14.7    14.2  10.8
2013 07 09    06 09 31.9 +22 58 41   2.0043  1.0521    14.6    14.1  10.8
2013 07 10    06 14 07.4 +23 04 55   2.0052  1.0521    14.5    14.0  10.8
2013 07 11    06 18 43.0 +23 10 40   2.0063  1.0523    14.4    13.9  10.8
2013 07 12    06 23 18.6 +23 15 54   2.0075  1.0527    14.3    13.8  10.8
2013 07 13    06 27 54.1 +23 20 38   2.0088  1.0532    14.2    13.7  10.9
2013 07 14    06 32 29.5 +23 24 51   2.0103  1.0539    14.1    13.6  10.9
2013 07 15    06 37 04.6 +23 28 34   2.0120  1.0548    14.0    13.5  10.9
2013 07 16    06 41 39.5 +23 31 46   2.0137  1.0559    13.9    13.4  10.9
2013 07 17    06 46 14.0 +23 34 29   2.0157  1.0571    13.8    13.3  10.9
2013 07 18    06 50 48.0 +23 36 40   2.0177  1.0586    13.8    13.2  10.9
2013 07 19    06 55 21.6 +23 38 22   2.0199  1.0601    13.7    13.1  10.9
2013 07 20    06 59 54.5 +23 39 34   2.0222  1.0619    13.6    13.0  10.9
2013 07 21    07 04 26.9 +23 40 16   2.0247  1.0638    13.5    12.9  10.9
2013 07 22    07 08 58.5 +23 40 28   2.0273  1.0659    13.5    12.8  11.0
2013 07 23    07 13 29.3 +23 40 11   2.0300  1.0682    13.4    12.7  11.0
2013 07 24    07 17 59.3 +23 39 25   2.0329  1.0706    13.4    12.7  11.0
2013 07 25    07 22 28.3 +23 38 10   2.0359  1.0732    13.3    12.6  11.0
2013 07 26    07 26 56.4 +23 36 27   2.0390  1.0759    13.3    12.5  11.0
2013 07 27    07 31 23.5 +23 34 16   2.0422  1.0788    13.2    12.4  11.0
2013 07 28    07 35 49.5 +23 31 37   2.0456  1.0819    13.2    12.3  11.1
2013 07 29    07 40 14.3 +23 28 31   2.0490  1.0851    13.1    12.3  11.1
2013 07 30    07 44 38.0 +23 24 58   2.0526  1.0885    13.1    12.2  11.1
2013 07 31    07 49 00.4 +23 20 59   2.0563  1.0920    13.1    12.1  11.1


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RE: 46P/Wirtanen
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Comet 46P/Wirtanen makes its closest approach to the Earth (2.002 AU) on the 4th July, 2013.



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Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1 
2008 03 05    03 29.56   +26 31.0    0.943    1.139    72.1    55.9   9.7
2008 03 10    03 54.84   +28 53.4    0.962    1.165    73.1    54.7   9.9
2008 03 15    04 20.80   +30 54.3    0.985    1.194    74.2    53.3  10.1
2008 03 20    04 47.15   +32 32.0    1.015    1.225    75.1    51.8  10.4
2008 03 25    05 13.56   +33 45.5    1.049    1.258    75.8    50.2  10.6
2008 03 30    05 39.70   +34 35.4    1.088    1.293    76.5    48.7  10.9


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