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Post Info TOPIC: C/2005E2 (McNaught)


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RE: C/2005E2 (McNaught)
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Date TT R. A. (2000) Decl. Delta r Elong. Phase m1
2006 03 01 00 27.33 +11 27.6 2.275 1.522 31.5 19.9 9.1
2006 03 02 00 30.28 +11 52.8 2.278 1.522 31.4 19.8 9.1
2006 03 03 00 33.23 +12 17.9 2.281 1.523 31.3 19.7 9.1
2006 03 04 00 36.19 +12 42.9 2.284 1.524 31.1 19.6 9.1
2006 03 05 00 39.17 +13 07.9 2.288 1.525 31.0 19.6 9.1
2006 03 06 00 42.15 +13 32.7 2.291 1.527 30.8 19.5 9.1
2006 03 07 00 45.15 +13 57.4 2.295 1.528 30.7 19.4 9.1
2006 03 08 00 48.16 +14 22.0 2.298 1.530 30.6 19.3 9.2
2006 03 09 00 51.17 +14 46.5 2.302 1.531 30.5 19.2 9.2
2006 03 10 00 54.20 +15 10.9 2.306 1.533 30.3 19.1 9.2
2006 03 11 00 57.24 +15 35.1 2.310 1.535 30.2 19.0 9.2
2006 03 12 01 00.28 +15 59.2 2.314 1.537 30.1 18.9 9.2
2006 03 13 01 03.34 +16 23.2 2.318 1.539 29.9 18.8 9.2
2006 03 14 01 06.41 +16 47.0 2.322 1.541 29.8 18.7 9.2
2006 03 15 01 09.49 +17 10.6 2.327 1.544 29.7 18.6 9.2
2006 03 16 01 12.57 +17 34.1 2.331 1.546 29.6 18.5 9.2
2006 03 17 01 15.67 +17 57.4 2.336 1.549 29.4 18.4 9.2
2006 03 18 01 18.77 +18 20.5 2.341 1.552 29.3 18.3 9.3
2006 03 19 01 21.89 +18 43.4 2.346 1.554 29.2 18.2 9.3
2006 03 20 01 25.02 +19 06.2 2.351 1.557 29.1 18.1 9.3
2006 03 21 01 28.15 +19 28.7 2.356 1.561 28.9 18.0 9.3
2006 03 22 01 31.29 +19 51.0 2.361 1.564 28.8 17.9 9.3
2006 03 23 01 34.45 +20 13.2 2.366 1.567 28.7 17.8 9.3
2006 03 24 01 37.61 +20 35.1 2.372 1.571 28.6 17.7 9.3
2006 03 25 01 40.78 +20 56.8 2.378 1.574 28.4 17.6 9.4
2006 03 26 01 43.96 +21 18.3 2.383 1.578 28.3 17.5 9.4
2006 03 27 01 47.15 +21 39.5 2.389 1.582 28.2 17.3 9.4
2006 03 28 01 50.34 +22 00.6 2.395 1.585 28.1 17.2 9.4
2006 03 29 01 53.55 +22 21.3 2.401 1.589 27.9 17.1 9.4
2006 03 30 01 56.76 +22 41.9 2.407 1.594 27.8 17.0 9.4
2006 03 31 01 59.98 +23 02.2 2.414 1.598 27.7 16.9 9.4


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Posts: 131433
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C/2005 E2 (McNaught)
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The comet is now at magnitude 10.4.
The size is now over 2 arcmin and starting to look like a typical small comet.

The comet will brighten to magnitude 10 from January to March.

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RE: C/2005E2 (McNaught)
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At discovery on March 12, by R. H. McNaught), the comet was faint as 16.4 magnitude . It has steadily been brightening.
Now it is below 11th magnitude in the constellation Capricorn.
It is predicted to reach to 10 magnitude from January to March. In the Southern Hemisphere, it is observable only until December. In the Northern Hemisphere, the altitude will be getting lower slowly after January, and it will be too low to observe in April.

Date(TT) R.A. (2000) Dec. Delta r Elong. m1
Nov 01 19 57.61 -28 17.3 2.153 2.164 77.4 10.5
Nov 06 20 04.50 -27 16.4 2.165 2.120 74.1 10.4
Nov 11 20 11.94 -26 13.1 2.176 2.075 70.9 10.4
Nov 16 20 19.89 -25 07.0 2.186 2.032 67.9 10.3
Nov 21 20 28.33 -23 58.0 2.195 1.990 65.0 10.2
Nov 26 20 37.21 -22 45.7 2.203 1.948 62.2 10.1
Nov 26 20 37.21 -22 45.7 2.203 1.948 62.2 10.1
Dec 01 20 46.52 -21 30.0 2.209 1.908 59.5 10.0
Dec 06 20 56.24 -20 10.7 2.214 1.869 57.0 9.9
Dec 11 21 06.32 -18 47.5 2.217 1.831 54.5 9.9
Dec 16 21 16.75 -17 20.2 2.220 1.795 52.2 9.8
Dec 21 21 27.51 -15 48.9 2.222 1.760 50.1 9.7
Dec 26 21 38.59 -14 13.4 2.223 1.727 48.0 9.6
Dec 31 21 49.97 -12 33.7 2.223 1.696 46.1 9.5




Orbital Elements


Epoch 2006 March 6.0 TT = JDT 2453800.5
T 2006 Feb. 23.4750 TT MPC
q 1.519607 (2000.0) P Q
z -0.000084 Peri. 39.9676 +0.8785562 -0.4736622
+/-0.000007 Node 347.8476 +0.3283218 +0.6924048
e 1.000127 Incl. 16.9883 +0.3469060 +0.5442607
From 220 observations 2005 Mar. 12-Aug. 19, mean residual 0".4.


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-- Edited by Blobrana at 17:39, 2005-11-28

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