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Dates Of Last Observation Of Comets

The following tables list the date of the last confirmed astrometric observation reported to the Minor Planet Center (MPC) for each of the currently-observable comets. It is hoped that these tables will assist observers in planning a useful program of astrometric observation of these objects.

Observers are reminded of the efficiency of making and reporting observations of specific objects on pairs of nearby nights, as the accuracy of an isolated single-night observation can be difficult to judge.

If this list has not been updated in more two hours, please report this fact (after ensuring that you are not looking at a cached copy of this page!).


This document was last updated on 2009 July 5.13 UT


Designation                         Last obs.       Mag.  Code
6P/d'Arrest                         2009 02 21.79  18.2 N  204
7P/Pons-Winnecke                    2008 12 23.37          900
8P/Tuttle                           2008 06 10.40  17.2 N  474
9P/Tempel                           2006 11 23.29  21.2 T  705
10P/Tempel                          2009 04 19.83  19.7 N  B42
14P/Wolf                            2009 01 02.77  19.2 N  204
15P/Finlay                          2009 03 20.92  20.1 N  A77
17P/Holmes                          2009 04 15.89  20.7 N  J47
19P/Borrelly                        2009 06 12.95  18.0 N  B82
22P/Kopff                           2009 06 29.39  12.7 N  H45
24P/Schaumasse                      2001 07 23.47          360
29P/Schwassmann-Wachmann            2009 06 01.48          900
30P/Reinmuth                        2003 06 28.24          699
31P/Schwassmann-Wachmann            2009 01 02.92  20.1 N  204
36P/Whipple                         2004 02 20.83  19.4 N  A33
43P/Wolf-Harrington                 2009 05 25.43  20.4 N  H10
44P/Reinmuth                        2009 03 28.15  20.1 T  704
46P/Wirtanen                        2008 06 23.89  17.7 N  204
47P/Ashbrook-Jackson                2009 01 27.83  16.2 N  J24
49P/Arend-Rigaux                    2006 06 26.94  20.0 N  204
54P/de Vico-Swift-NEAT              2003 02 05.08  17.9 T  H43
57P/du Toit-Neujmin-Delporte        2008 05 04.00          204
59P/Kearns-Kwee                     2009 05 01.86  17.7 N  204
61P/Shajn-Schaldach                 2009 03 15.51          349
64P/Swift-Gehrels                   2001 02 26.72          867
65P/Gunn                            2009 06 28.52          900
67P/Churyumov-Gerasimenko           2009 06 18.88  15.9 N  J47
68P/Klemola                         2009 01 17.37  14.2 T  349
74P/Smirnova-Chernykh               2009 06 13.88  17.4 N  J47
77P/Longmore                        2009 06 26.86  15.6 N  939
81P/Wild                            2009 03 17.83  18.7 N  A77
82P/Gehrels                         2002 03 08.56          360
85P/Boethin                         1986 03 01.19          657
88P/Howell                          2009 06 28.53  15.7 N  900
89P/Russell                         2009 06 03.88  17.4 T  D25
94P/Russell                         2009 01 21.79  20.3 N  A77
97P/Metcalf-Brewington              2000 12 23.13  19.1 T  704
99P/Kowal                           2008 07 09.89  18.4 N  204
100P/Hartley                        2003 06 22.18  19.1 N  448
104P/Kowal                          2004 02 20.76  18.1 N  A33
110P/Hartley                        2009 04 29.87  19.7 N  A77
116P/Wild                           2009 06 26.50          900
117P/Helin-Roman-Alu                2009 02 21.54          349
118P/Shoemaker-Levy                 2008 11 19.79  20.4 N  204
119P/Parker-Hartley                 2006 04 09.17  18.6 T  G96
124P/Mrkos                          2008 08 03.44  18.8 T  E12
126P/IRAS                           2009 05 28.56  19.1 N  D25
127P/Holt-Olmstead                  2009 06 22.60  21.1 N  F65
128P/Shoemaker-Holt                 2008 04 28.14  19.8 T  G96
129P/Shoemaker-Levy                 2006 06 20.18  18.4 T  703
131P/Mueller                        2004 12 14.16  20.1 T  291
136P/Mueller                        2009 03 24.21          291
137P/Shoemaker-Levy                 2001 02 20.62          867
139P/Vaisala-Oterma                 2009 03 21.22  21.4 T  291
142P/Ge-Wang                        1999 10 21.57          402
143P/Kowal-Mrkos                    2009 06 19.98  18.2 N  J24
144P/Kushida                        2009 06 12.46  15.2 T  D25
145P/Shoemaker-Levy                 2009 02 21.83  16.5 N  J24
148P/Anderson-LINEAR                2008 03 23.81  17.6 N  204
149P/Mueller                        2001 06 28.88  18.0 T  170
150P/LONEOS                         2009 05 29.72  16.8 T  D21
152P/Helin-Lawrence                 2004 12 01.45          360
157P/Tritton                        2004 03 20.95  19.6 N  J87
158P/Kowal-LINEAR                   2009 05 24.92  18.7 N  A13
162P/Siding Spring                  2008 05 10.62  20.0 T  E12
164P/Christensen                    2005 06 18.24  18.9 T  G96
166P/NEAT                           2009 02 28.81          461
167P/CINEOS                         2008 12 19.80  20.4 N  204
169P/NEAT                           2009 06 24.92  18.4 N  J47
172P/Yeung                          2009 05 03.72  18.6 T  E12
173P/Mueller                        2009 04 25.85  20.9 N  B42
174P/Echeclus
176P/LINEAR
179P/Jedicke                        2009 04 21.19  20.8 T  291
180P/NEAT                           2008 08 03.85  18.0 T  215
183P/Korlevic-Juric                 2009 04 30.66  17.3 T  E12
186P/Garradd                        2009 06 02.64  19.9 N  E85
187P/LINEAR                         2008 08 28.83  18.2 N  A77
188P/LINEAR-Mueller                 2009 04 21.17  19.8 T  291
195P/Hill                           2009 03 26.15  18.0 T  291
199P/Shoemaker                      2009 06 28.67          D90
200P/Larsen                         2009 01 21.85          204
202P/Scotti                         2009 03 21.20  20.4 T  291
203P/Korlevic                       2009 02 16.78  19.2 N  204
204P/LINEAR-NEAT                    2009 04 28.90  19.0 N  585
205P/Giacobini                      2009 02 28.80  18.3 T  215
209P/LINEAR                         2009 05 24.17  16.4 N  J24
210P/Christensen                    2009 05 24.94  19.2 N  J47
211P/Hill                           2009 04 22.89  18.9 N  J47
212P/NEAT                           2009 03 02.28  18.7 T  703
213P/Van Ness                       2009 04 21.21          291
214P/LINEAR                         2009 05 03.71  20.1 N  415
215P/NEAT                           2009 05 19.96  19.1 T  215
216P/LINEAR                         2009 04 29.94  19.2 N  A77
217P/LINEAR                         2009 06 28.07  14.6 N  J53
218P/LINEAR                         2009 05 19.93  18.1 T  215
219P/LINEAR                         2009 06 26.63  17.9 T  900
220P/McNaught                       2009 05 28.90  20.0 N  A13
221P/LINEAR                         2009 06 03.45  20.3 N  926
C/1995 O1 (Hale-Bopp)               2007 10 22.72          413
P/1996 R2 (Lagerkvist)              1997 01 12.72          587
P/1997 T3 (Lagerkvist-Carsenty)     1999 02 13.23  19.4 T  693
P/1998 U3 (Jager)                   1999 05 11.50          900
P/1998 U4 (Spahr)                   2001 04 15.24  19.9 N  608
P/1998 VS24 (LINEAR)                1999 01 14.17  19.1 T  693
P/1999 XB69 (LINEAR)                2000 05 01.22  18.8 T  695
P/1999 XN120 (Catalina)             2000 03 30.45          360
P/2000 Y3 (Scotti)                  2002 05 14.21  19.1 T  704
P/2001 R6 (LINEAR-Skiff)            2002 02 01.43          360
P/2001 YX127 (LINEAR)               2004 05 29.24  21.5 T  691
P/2002 Q1 (Van Ness)                2002 10 14.78          360
P/2002 S1 (Skiff)                   2003 04 07.89  19.8 N  J95
P/2002 T1 (LINEAR)                  2003 01 05.93  19.9 N  J95
C/2002 VQ94 (LINEAR)                2009 05 22.91  18.7 T  215
P/2002 X2 (NEAT)                    2004 03 16.11  20.1 T  204
P/2003 A1 (LINEAR)                  2003 04 06.44          360
P/2003 CP7 (LINEAR-NEAT)            2003 06 26.16  19.6 N  448
C/2003 WT42 (LINEAR)                2008 05 25.92  20.0 N  J47
P/2004 A1 (LONEOS)                  2007 08 07.35  20.3 N  474
C/2004 B1 (LINEAR)                  2008 08 24.80  21   T  461
C/2004 D1 (NEAT)                    2008 08 16.89  20.8 N  B37
P/2004 F3 (NEAT)                    2008 01 26.90          204
P/2004 FY140 (LINEAR)               2004 07 12.39  18.8 N  E12
P/2004 X1 (LINEAR)                  2005 02 06.84          118
C/2005 EL173 (LONEOS)               2008 11 17.81  17.8 N  A77
P/2005 L1 (McNaught)                2005 09 15.45  16.6 T  E12
C/2005 L3 (McNaught)                2009 06 27.92  15.6 N  J53
P/2005 RV25 (LONEOS-Christensen)    2006 01 28.12          G96
P/2005 S2 (Skiff)                   2005 11 08.95  19.6 N  A32
C/2005 S4 (McNaught)                2009 06 21.27  19.9 N  H45
P/2005 SB216 (LONEOS)               2009 05 01.91  19.2 N  204
C/2006 E1 (McNaught)                2009 03 03.38  21.9 N  474
P/2006 F1 (Kowalski)                2007 09 01.89  18.8 N  204
C/2006 K1 (McNaught)                2009 02 28.86  19.2 T  215
C/2006 K4 (NEAT)                    2009 03 06.65  18.2 N  415
C/2006 OF2 (Broughton)              2009 06 16.87  16.1 N  J47
C/2006 P1 (McNaught)                2007 07 11.50  18.9 N  415
C/2006 Q1 (McNaught)                2009 06 28.11  16.7 N  J10
C/2006 S3 (LONEOS)                  2009 06 28.03  16.9 N  A77
C/2006 S5 (Hill)                    2009 01 04.60  20.1 N  474
P/2006 T1 (Levy)                    2006 12 01.84  16.8 T  349
C/2006 U6 (Spacewatch)              2009 05 29.90  18.2 N  J08
C/2006 V1 (Catalina)                2008 09 19.48  17.0 T  E12
C/2006 W3 (Christensen)             2009 06 29.38  11.9 N  H45
C/2007 B2 (Skiff)                   2009 06 19.73  16.7 T  D25
P/2007 C2 (Catalina)                2008 05 03.88  18.7 T  215
C/2007 D1 (LINEAR)                  2009 05 24.94  18.0 T  215
C/2007 D3 (LINEAR)                  2009 04 19.88  21   N  461
C/2007 G1 (LINEAR)                  2009 04 14.34  16.6 N  467
P/2007 H1 (McNaught)                2009 01 31.87  17.5 N  J79
C/2007 K3 (Siding Spring)           2008 09 30.80  18.6 N  A77
C/2007 M1 (McNaught)                2009 06 26.30  19.1 N  H45
C/2007 M2 (Catalina)                2009 05 16.37  17.6 N  467
C/2007 N3 (Lulin)                   2009 05 20.48          D92
C/2007 Q3 (Siding Spring)           2009 05 15.99          I21
P/2007 R1 (Larson)                  2009 02 16.78  20.4 N  A77
C/2007 S2 (Lemmon)                  2009 04 19.84          461
C/2007 T5 (Gibbs)                   2009 04 25.05  19.4 N  B82
C/2007 U1 (LINEAR)                  2009 02 28.76  17.5 T  215
C/2007 VO53 (Spacewatch)            2009 04 13.85  18.2 N  204
C/2007 W1 (Boattini)                2008 12 17.72  20.1 N  A77
C/2007 Y2 (McNaught)                2009 01 14.50  18.9 N  415
C/2008 A1 (McNaught)                2009 06 26.72  17.7 N  D93
C/2008 C1 (Chen-Gao)                2008 05 28.31  17.6 N  467
P/2008 CL94 (Lemmon)                2009 04 22.19          691
C/2008 E1 (Catalina)                2009 04 12.11  18.6 N  H45
C/2008 E3 (Garradd)                 2008 08 11.57  18.4 T  322
C/2008 FK75 (Lemmon-Siding Spring)  2009 06 27.89  17.5 N  B26
C/2008 G1 (Gibbs)                   2008 08 27.88  19.4 N  A77
C/2008 H1 (LINEAR)                  2008 07 25.87  19.1 N  130
C/2008 J1 (Boattini)                2009 04 04.88  19.6 N  J47
P/2008 J2 (Beshore)                 2008 08 04.88          J70
P/2008 J3 (McNaught)                2009 01 21.77          204
P/2008 L2 (Hill)                    2009 01 29.09  17.9 T  703
C/2008 N1 (Holmes)                  2009 06 29.36  17.3 N  H45
P/2008 O2 (McNaught)                2008 12 20.85  18.5 N  J24
C/2008 P1 (Garradd)                 2009 06 26.76          900
C/2008 Q1 (Maticic)                 2009 06 26.55  17.3 N  D93
C/2008 Q3 (Garradd)                 2009 06 28.94  12.6 N  J47
C/2008 R3 (LINEAR)                  2009 03 17.86  17.4 N  J38
C/2008 S3 (Boattini)                2009 02 28.86  19.4 T  215
P/2008 T1 (Boattini)                2009 01 17.48  18.9 T  349
C/2008 T2 (Cardinal)                2009 06 03.87  13.4 N  J39
P/2008 T4 (Hill)                    2009 02 27.12  17.7 T  703
P/2008 WZ96 (LINEAR)                2009 04 13.81  18.5 N  204
C/2008 X3 (LINEAR)                  2009 03 04.42  19.3 N  474
P/2008 Y1 (Boattini)                2009 04 13.85  18.5 N  204
P/2008 Y2 (Gibbs)                   2009 04 30.89  19.2 N  204
P/2008 Y3 (McNaught)                2009 04 20.14  18.9 T  291
P/2009 B1 (Boattini)                2009 03 29.13  18.8 T  G96
C/2009 B2 (LINEAR)                  2009 05 09.49          349
C/2009 E1 (Itagaki)                 2009 06 28.11  18.6 N  B40
C/2009 F1 (Larson)                  2009 05 23.86  18.7 N  204
C/2009 F2 (McNaught)                2009 06 12.89  17.7 N  J24
C/2009 F4 (McNaught)                2009 06 26.53  16.7 T  900
C/2009 F5 (McNaught)                2009 06 26.54  17.4 T  900
C/2009 F6 (Yi-SWAN)                 2009 05 29.96          A49
C/2009 G1 (STEREO)                  2009 06 07.77          D90
P/2009 K1 (Gibbs)                   2009 06 24.16  16.4 T  703
C/2009 K2 (Catalina)                2009 06 29.32  18.9 T  H45
C/2009 K3 (Beshore)                 2009 05 28.27  20.2 T  H01
C/2009 K4 (Gibbs)                   2009 06 19.95  16.8 N  J24
C/2009 K5 (McNaught)                2009 06 21.64  16.8 N  467
P/2009 L2 (Yang-Gao)                2009 06 29.34  13.5 T  H45

This document was last updated on 2009 July 5.13 UT


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