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Post Info TOPIC: Comet 2003 R5 (SOHO)
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RE: Comet 2003 R5 (SOHO)
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Blobrana


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Comet 322P/SOHO
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Comet 322P/SOHO is at Perihelion (0.054 AU) in the constellation Leo on the 4th September 2015

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 09 01    11 06 51.3 +03 02 00   0.8904  0.1891     8.9   124.4  15.9
2015 09 02    10 58 36.4 +04 47 47   0.8984  0.1410     5.3   139.0  14.0
2015 09 03    10 48 45.5 +06 53 20   0.9212  0.0898     1.2   167.0  11.1
2015 09 04    10 40 09.1 +08 55 53   0.9852  0.0537     2.8   114.4   7.9
2015 09 05    10 44 30.4 +08 51 38   1.0773  0.0857     2.8    35.1  11.2
2015 09 06    10 53 22.2 +07 50 09   1.1424  0.1369     1.4    10.5  14.3
2015 09 07    11 01 51.9 +06 45 25   1.1929  0.1853     0.5     2.9  16.4
2015 09 08    11 09 39.7 +05 43 50   1.2361  0.2300     1.4     6.2  17.9
2015 09 09    11 16 49.9 +04 46 03   1.2749  0.2718     2.4     9.0  19.0
2015 09 10    11 23 28.4 +03 51 50   1.3110  0.3110     3.3    10.8  20.0
2015 09 11    11 29 40.3 +03 00 51   1.3451  0.3483     4.1    12.0  20.8
2015 09 12    11 35 29.3 +02 12 45   1.3776  0.3839     4.8    12.7  21.5
2015 09 13    11 40 58.6 +01 27 14   1.4090  0.4180     5.4    13.1  22.1
2015 09 14    11 46 10.5 +00 44 02   1.4395  0.4508     5.9    13.3  22.6
2015 09 15    11 51 07.1 +00 02 56   1.4691  0.4825     6.4    13.4  23.1
2015 09 16    11 55 50.1 -00 36 15   1.4981  0.5133     6.7    13.3  23.5
2015 09 17    12 00 20.7 -01 13 40   1.5265  0.5431     7.1    13.2  23.9
2015 09 18    12 04 40.2 -01 49 30   1.5543  0.5721     7.3    13.0  24.3
2015 09 19    12 08 49.7 -02 23 50   1.5817  0.6004     7.6    12.7  24.7
2015 09 20    12 12 49.8 -02 56 48   1.6086  0.6280     7.7    12.4  25.0


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Comet 322P/SOHO makes its closest approach to the Earth (0.959 AU) on the 27th June 2015

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 06 25    13 29 10.2 -31 26 10   0.9570  1.6882   117.6    32.2  30.3
2015 06 26    13 26 02.3 -30 58 18   0.9567  1.6733   116.0    33.1  30.3
2015 06 27    13 22 59.3 -30 30 18   0.9566  1.6582   114.3    34.0  30.2
2015 06 28    13 20 01.3 -30 02 13   0.9567  1.6431   112.7    34.8  30.1
2015 06 29    13 17 08.4 -29 34 06   0.9570  1.6278   111.1    35.6  30.1
2015 06 30    13 14 20.3 -29 05 57   0.9575  1.6125   109.5    36.5  30.0
2015 07 01    13 11 37.1 -28 37 51   0.9582  1.5970   107.9    37.3  30.0
2015 07 02    13 08 58.8 -28 09 48   0.9590  1.5815   106.3    38.1  29.9
2015 07 03    13 06 25.2 -27 41 51   0.9600  1.5658   104.7    38.9  29.8
2015 07 04    13 03 56.2 -27 14 00   0.9611  1.5500   103.2    39.7  29.8
2015 07 05    13 01 31.9 -26 46 19   0.9624  1.5341   101.6    40.5  29.7
2015 07 06    12 59 12.1 -26 18 47   0.9637  1.5181   100.1    41.3  29.6
2015 07 07    12 56 56.7 -25 51 26   0.9652  1.5019    98.5    42.0  29.6
2015 07 08    12 54 45.5 -25 24 17   0.9667  1.4856    97.0    42.8  29.5
2015 07 09    12 52 38.6 -24 57 22   0.9683  1.4693    95.5    43.5  29.4
2015 07 10    12 50 35.8 -24 30 41   0.9699  1.4527    94.0    44.3  29.4
2015 07 11    12 48 36.9 -24 04 15   0.9716  1.4361    92.5    45.0  29.3
2015 07 12    12 46 41.9 -23 38 04   0.9733  1.4193    91.0    45.7  29.2
2015 07 13    12 44 50.6 -23 12 09   0.9750  1.4024    89.5    46.5  29.1
2015 07 14    12 43 02.9 -22 46 30   0.9767  1.3854    88.0    47.2  29.1
2015 07 15    12 41 18.7 -22 21 07   0.9785  1.3682    86.6    47.9  29.0
2015 07 16    12 39 37.8 -21 56 01   0.9802  1.3508    85.1    48.6  28.9
2015 07 17    12 38 00.0 -21 31 11   0.9818  1.3333    83.7    49.3  28.8
2015 07 18    12 36 25.3 -21 06 37   0.9834  1.3157    82.3    49.9  28.8
2015 07 19    12 34 53.5 -20 42 19   0.9850  1.2979    80.8    50.6  28.7
2015 07 20    12 33 24.4 -20 18 17   0.9864  1.2799    79.4    51.3  28.6
2015 07 21    12 31 57.9 -19 54 29   0.9878  1.2618    78.0    52.0  28.5
2015 07 22    12 30 33.8 -19 30 56   0.9891  1.2435    76.6    52.7  28.4
2015 07 23    12 29 12.0 -19 07 36   0.9903  1.2250    75.3    53.3  28.3
2015 07 24    12 27 52.3 -18 44 29   0.9914  1.2064    73.9    54.0  28.2
2015 07 25    12 26 34.5 -18 21 34   0.9923  1.1875    72.5    54.7  28.1
2015 07 26    12 25 18.5 -17 58 49   0.9931  1.1685    71.1    55.3  28.0
2015 07 27    12 24 04.1 -17 36 14   0.9938  1.1493    69.8    56.0  27.9
2015 07 28    12 22 51.2 -17 13 47   0.9943  1.1298    68.4    56.7  27.8
2015 07 29    12 21 39.4 -16 51 28   0.9946  1.1102    67.0    57.4  27.7
2015 07 30    12 20 28.8 -16 29 13   0.9948  1.0903    65.7    58.1  27.6
2015 07 31    12 19 19.0 -16 07 03   0.9948  1.0702    64.3    58.8  27.4


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Comet P/1999 R1 (SOHO)
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Comet P/1999 R1 (SOHO) is at Opposition (1.172 AU) in the constellation Lupus on the 22nd May 2015 

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 05 21    15 47 14.7 -41 06 10   1.1842  2.1594   158.9     9.7  32.4
2015 05 22    15 43 33.9 -41 04 13   1.1711  2.1471   159.1     9.7  32.3
2015 05 23    15 39 48.6 -41 01 30   1.1583  2.1348   159.1     9.7  32.3
2015 05 24    15 35 59.1 -40 57 59   1.1459  2.1224   159.0     9.9  32.2
2015 05 25    15 32 05.5 -40 53 38   1.1340  2.1100   158.7    10.0  32.1
2015 05 26    15 28 08.2 -40 48 25   1.1224  2.0974   158.4    10.3  32.1
2015 05 27    15 24 07.4 -40 42 19   1.1112  2.0849   157.9    10.5  32.0
2015 05 28    15 20 03.4 -40 35 19   1.1004  2.0722   157.3    10.9  32.0
2015 05 29    15 15 56.7 -40 27 23   1.0900  2.0595   156.5    11.3  31.9
2015 05 30    15 11 47.4 -40 18 30   1.0800  2.0467   155.7    11.8  31.8
2015 05 31    15 07 36.0 -40 08 39   1.0705  2.0339   154.8    12.3  31.8


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Comet P/1999 R1 (SOHO) is at Opposition (3.617 AU) on the 12th May 2014

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   Mag
2014 05 10    15 03 05.6 -30 26 37   3.6244  4.6138   167.0     2.8  39.8
2014 05 11    15 01 58.4 -30 22 49   3.6205  4.6107   167.2     2.8  39.8
2014 05 12    15 00 51.2 -30 18 54   3.6169  4.6077   167.3     2.8  39.7
2014 05 13    14 59 44.0 -30 14 53   3.6137  4.6046   167.3     2.8  39.7
2014 05 14    14 58 36.9 -30 10 47   3.6108  4.6015   167.2     2.8  39.7
2014 05 15    14 57 29.9 -30 06 34   3.6083  4.5985   166.9     2.9  39.7
2014 05 16    14 56 23.1 -30 02 16   3.6061  4.5953   166.6     2.9  39.7
2014 05 17    14 55 16.5 -29 57 52   3.6042  4.5922   166.1     3.0  39.7
2014 05 18    14 54 10.1 -29 53 24   3.6026  4.5891   165.6     3.1  39.7
2014 05 19    14 53 04.0 -29 48 50   3.6014  4.5859   165.0     3.3  39.7
2014 05 20    14 51 58.2 -29 44 11   3.6006  4.5828   164.3     3.4  39.7
2014 05 21    14 50 52.7 -29 39 27   3.6000  4.5796   163.6     3.6  39.7
2014 05 22    14 49 47.6 -29 34 39   3.5998  4.5764   162.8     3.8  39.7
2014 05 23    14 48 43.0 -29 29 47   3.5999  4.5732   161.9     3.9  39.7
2014 05 24    14 47 38.8 -29 24 50   3.6004  4.5700   161.1     4.1  39.7
2014 05 25    14 46 35.1 -29 19 50   3.6012  4.5668   160.2     4.3  39.7
2014 05 26    14 45 31.9 -29 14 45   3.6023  4.5635   159.2     4.5  39.7
2014 05 27    14 44 29.3 -29 09 38   3.6037  4.5603   158.3     4.7  39.7
2014 05 28    14 43 27.2 -29 04 27   3.6054  4.5570   157.3     4.9  39.7
2014 05 29    14 42 25.9 -28 59 13   3.6075  4.5537   156.3     5.1  39.7
2014 05 30    14 41 25.2 -28 53 56   3.6099  4.5504   155.3     5.3  39.7
2014 05 31    14 40 25.2 -28 48 36   3.6126  4.5471   154.3     5.6  39.7


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Blobrana


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Posts: 131433
Date:
Comet 2003 R5 (SOHO)
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P/1999 R1 (SOHO) was recovered in SOHO LASCO C2 images by B. Zhou.
The Kracht 2 orbital group comet was at perihelion on the 7th September, 2011.
Orbital period is 4.0 years.

P/1999 R1 = 2003 R5 = 2007 R5

 

Info from Sungrazercomets



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Blobrana


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Comet P/2007 R5 (SOHO)
P_2007_R5_SOHO_medium.gif

The comet faded as quickly as it brightened, and soon became too faint for SOHO's instruments to see it. Estimates show that P/2007 R5 (SOHO) is probably only 100-200 metres in diameter. Given how small and faint this object is, and how close it still is to the Sun, it is an extremely difficult target for observers on Earth to pick out in the sky.

Credits: ESA/ NASA/ SOHO



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Blobrana


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Posts: 131433
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RE: Comet P/2007 R5 (SOHO)
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P/2007 R5 (SOHO) seems to behave like a comet, even though it doesnt really look like one.

 It is quite possibly an extinct comet nucleus of some kind - Karl Battams, who runs SOHO's comet discovery programme.

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Blobrana


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Posts: 131433
Date:
Comet 2003 R5 (SOHO)
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Comet P/1999 R1 = 2003 R5 = 2007 R5 (SOHO)
This comet was discovered by  Bo Zhou on September 10, 2007 on real time  images transmitted by the coronagraph C2 of  the SOHO satellite.
Sebastian Hönig (2006, Astron. Astrophysics. 445, 759)  had previously announced the perihelion return  of the comet C/2003 R5 (SOHO), and confirmed the identity with the comet C/1999 R1 (SOHO).
The orbital elements of the comet P/2007 R5 (SOHO) indicated perihelion on September 11, 2007 at a distance of 0.0537196 AU from the Sun, and a 3.99 years period.

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