* Astronomy

C/2006 WD4 (Lemmon) was discovered  as apparently asteroidal via the Mt. Lemmon survey.
Discovery Date      November 20, 2006

C/2006 WD4 (Lemmon)
Epoch 2007 Apr. 10.0 TT = JDT 2454200.5
T 2007 Apr. 28.3994 TT                                  MPC
q   0.591239             (2000.0)            P               Q
z  +0.001735       Peri.  292.6919      +0.3334336      -0.8815363
 +/-0.000004       Node   226.7905      -0.6046945      -0.4719687
e   0.998974       Incl.  152.7044      -0.7233025      -0.0118027
From 74 observations 2006 Nov. 20-2007 May 7, mean residual 0".6.

Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1 
2007 05 10    01 24.56   -09 03.8    0.575    0.645    36.4   111.6  13.4

2007 05 30    08 55.82   +21 32.8    0.432    0.898    62.3    92.5  14.2
2007 06 04    09 45.20   +21 33.5    0.610    0.974    68.6    75.8  15.3
2007 06 09    10 11.49   +21 12.5    0.797    1.052    69.8    64.9  16.2
2007 06 14    10 27.86   +20 51.2    0.984    1.131    68.9    56.9  17.0
2007 06 19    10 39.33   +20 31.5    1.168    1.210    66.8    50.5  17.7
2007 06 24    10 48.13   +20 13.3    1.349    1.289    64.2    45.3  18.3
2007 06 29    10 55.34   +19 56.0    1.525    1.367    61.3    40.7  18.8
2007 07 04    11 01.56   +19 39.3    1.695    1.445    58.2    36.7  19.2
2007 07 09    11 07.15   +19 23.1    1.860    1.523    54.9    33.1  19.7
2007 07 14    11 12.30   +19 07.1    2.019    1.599    51.6    29.9  20.1
2007 07 19    11 17.15   +18 51.5    2.172    1.675    48.2    26.9  20.4