#WRAP "P/2009 U4 (McNaught)" "iau/Ephemerides/Comets/"
<h2>P/2009 U4 (McNaught)</h2>
<h2>Orbital Elements</h2>
The following orbital elements are taken from
<a href="http://cfa-www.harvard.edu/mpec/K09/K09W99.html"><i>MPEC</i> 2009-W99</a>:
<pre>
P/2009 U4 (McNaught)
T 2009 Sept.  9.0667 TT                                 MPC
q   1.648719             (2000.0)            P               Q
n   0.0864788      Peri.  259.8826      +0.7018285      +0.6974812
a   5.064418       Node    55.7123      -0.5655032      +0.6691069
e   0.674451       Incl.   10.0911      -0.4331776      +0.2565462
P  11.4
From 66 observations 2009 Oct. 11-Nov. 22.
</pre>
<a href="/iau/info/OrbElsExplanation.html">An explanation of the orbital
elements is available</a>.<p>
These orbital elements are also available in
<a href="SoftwareComets.html">forms suitable for loading
into a number of popular planetarium-type software programs</a>.
<p><hr><p>
<h2>Ephemeris</h2>
The following ephemeris is at intervals of five days.  A
<a href="2009U4_1.html">daily ephemeris</a>
covering the same time interval is also available.
<p>
Personalized ephemerides for this (and other) objects may be
generated using the <a href="/iau/MPEph/MPEph.html">Minor Planet
& Comet Ephemeris Service</a>.
<p>
<a href="/icq/CometMags.html">Recent magnitude estimates for this comet
(as reported to the <a href="/icq/icq.html"><i>ICQ</i></a>) may be available.
<p>
<pre>
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1    m2
2009 11 25    22 08.14   -21 30.2    1.672    1.847    83.8    32.1  17.8
2009 11 30    22 19.47   -19 57.4    1.738    1.872    81.8    31.4  17.9
2009 12 05    22 30.56   -18 24.7    1.805    1.897    79.8    30.7  18.1
2009 12 10    22 41.43   -16 52.4    1.875    1.923    77.7    30.0  18.2
2009 12 15    22 52.09   -15 20.7    1.946    1.950    75.6    29.3  18.3
2009 12 20    23 02.56   -13 49.9    2.019    1.978    73.5    28.5  18.5
2009 12 25    23 12.83   -12 20.2    2.093    2.007    71.3    27.7  18.6
2009 12 30    23 22.94   -10 51.7    2.169    2.036    69.1    26.8  18.8
2010 01 04    23 32.87   -09 24.6    2.245    2.066    66.8    25.9  18.9
2010 01 09    23 42.65   -07 59.0    2.323    2.097    64.5    25.0  19.0
2010 01 14    23 52.30   -06 35.0    2.401    2.128    62.2    24.1  19.2
2010 01 19    00 01.81   -05 12.6    2.480    2.159    59.8    23.2  19.3
2010 01 24    00 11.20   -03 51.9    2.559    2.191    57.4    22.2  19.4
2010 01 29    00 20.48   -02 33.1    2.638    2.224    55.0    21.3  19.6
2010 02 03    00 29.64   -01 16.1    2.716    2.257    52.5    20.3  19.7
2010 02 08    00 38.71   -00 00.9    2.795    2.290    50.0    19.3  19.8
2010 02 13    00 47.69   +01 12.3    2.873    2.323    47.5    18.3  20.0
2010 02 18    00 56.58   +02 23.6    2.950    2.357    45.0    17.2  20.1
2010 02 23    01 05.40   +03 33.0    3.026    2.391    42.4    16.2  20.2
2010 02 28    01 14.13   +04 40.4    3.101    2.425    39.8    15.2  20.3
2010 03 05    01 22.79   +05 45.7    3.174    2.459    37.2    14.1  20.4
2010 03 10    01 31.38   +06 49.1    3.246    2.493    34.6    13.1  20.5
2010 03 15    01 39.91   +07 50.5    3.316    2.528    31.9    12.0  20.6
</pre>