Astrometry:
COD - B42
OBS Vitali Nevski
TEL 0.3-m Newton f/5 + CCD 
NET USNO-A2.0, UCAC-3

Comet               Date       |    R.A.        Decl.             m   
0031P         C2010 01 12.80916 05 22 26.66 +20 37 16.2          19.3 N      B42
0031P         C2011 03 09.89995 10 35 12.99 +13 42 34.1          18.5 N      B42

Photometry, ICQ format:
                Date         m1       Tel.  exp. Coma  DC    Tail 
 31        2010 01 12.83  C 18.7 UO 30.0L 5C060   0.3  6            ICQ 42 Nev  I a180C12.6 sQHYaICX MIm 4 P9*0.1  18.3  0.9s 0.9
 31        2011 03 09.90  C 17.5 UB 30.0L 5A620   0.2  4    1  m285 ICQ 42 Nev  I a180C14.4 sQHYaICX MIm 4 P9*0.2  17.5  0.9s 0.9