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Дата изменения: Wed Dec 5 18:08:43 2007
Дата индексирования: Mon Oct 1 19:28:34 2012
Кодировка:
Accuracy of World positional CCD observations of the numbered minor planets
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Analysis of an accuracy of CCD asteroid observations carried out by professional and amateur astronomers

An accuracy estimation of CCD asteroid observations contained in the Minor Planet Center Database and carried out in the years 1999 - 2006 is realized. About 20 millions individual positions of the Numbered and Unnumbered Minor Planets were tested by means of calculations of (O-C) residuals to derive "mean error of a single observation" for more than 400 observatories with MPC codes. The EPOS software package created at Pulkovo observatory was used for processing.

The compiled Table presents every year results of regular observational work for each observatory. In the first column the MPC codes are given . The second column contains the name and country of observatory. In the columns 3 to 5 one can find the telescope's parameters, namely: diameter, focal length, field of view, scale of CCD matrix and astrometric catalogue used. The columns 6, 7 show the number of asteroids and their positions taken into consideration in our analysis. The last three columns present the main results of our work - the type and value of the "mean error of a single observation" for this observatory. Our abbreviations are:
int.n, int.unn - a mean error of a single observation derived from analysis of one night CCD observations for numbered (n) and unnumbered (unn) asteroids;
ext.n, ext.unn - the same error derived from analysis of several close nights of CCD observations of this observatory.

We are sure that these values of "mean errors of a single observation" may be useful in the weight assessment procedure in the orbits improvement and also for selection of advanced amateurs for participation in various observational campaigns.

Remarks:
1 for reliable estimation 7-10 asteroid CCD observations with 30-50 obtained positions must be taken into consideration using our method. In the case of 5 or less asteroids our estimation is rather qualitative than quantitative. We show these minimum results for preliminary estimation which will be improved in future.
2 Two asteroid positions obtained during one night were not considered.
3 Our Pulkovo method of an accuracy estimation was published in article:

Bykov O.P., L'vov V.N., Izmailov I.S., Sumzina N.K "Accuracy of positional CCD observations of the Numbered Minor Planets in 1999-2001"// Proc. of the International Conference "Asteroids, Comets, Meteors 2002", Berlin, Germany, 2002, Ю. 413 - 416.

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Accuracy of the World CCD asteroid observations (MPC Database from 1999 to 2006) 
------------------------------------------------------------------------------
 MPC    Country       Diam.          CCD      Number of    Mean error  of a
 code Observatory     Focus   FOV   scale,   pla-  posi-  single observation
                      (m)           Catal.   nets  tions   RA    DEC    Type
------------------------------------------------------------------------------
  12  Belgium,        0.85  45 x 30'  0.9"    15      69   0.23"  0.13"  int n
1999  Uccle           2.1             GSC
  12                                          16     111   0.38   0.28   int n
2000                                           8      73   0.39   0.24   ext n
  12                                          43     282   0.40   0.29   int n
2001                                          22     185   0.69   0.72   ext n
  12                                          34     293   0.40   0.31   int n
2002                                          12     175   0.34   0.25   ext n
  12                                         127     899   0.42   0.40   int n
2003                                          27     334   0.38   0.42   ext n
                                             164    1425   0.69   0.56   int un
                                              75     966   0.70   0.59   ext un
  12                                         153    1131   0.50   0.41   int n
2004                                          25     374   0.62   0.38   ext n
                                             108     850   0.54   0.50   int un
                                              26     401   0.52   0.56   ext un
  12                                         162    1398   0.49   0.35   int n
2005                                          39     655   0.43   0.30   ext n
                                             241    2188   0.72   0.53   int un
                                              86    1303   0.72   0.54   ext un
  12                                         100     712   0.53   0.42   int n
2006                                          19     230   0.43   0.38   ext n
                                              14      81   1.00   0.86   int un
  17  Germany,        1.0   No data            5      41   0.62   0.53   int n
2003  Hoher List                      GSC      7      47   1.15   0.65   ext n
                                               5      25   1.15   0.80   ext un
  26  Switzerland,    0.40  21 x 21'  1.2"     5      22   0.10   0.09   int n
2003  Bern Univer.    4.0           Tycho     17      61   0.39   0.34   int un
  46  Czech Rep.,     0.57  16 x 10'  1.8"    48     173   0.24   0.18   int n
1999  Klet            3.0            USNO      6      37   0.28   0.25   ext n
  46                                          35     142   0.22   0.19   int n
2000                                           5      25   0.16   0.09   ext n
  46                                          62     252   0.19   0.34   int n
2001                                           4      27   0.14   0.15   ext n
  46                                          18      96   0.33   0.27   int n
2002                                           3      33   0.50   0.45   ext n
  46                                  1.3"     7      47   0.22   0.22   int n
2003                                          67     449   0.60   0.57   int un
                                              14     161   0.65   0.61   ext un
  46                                          16     139   0.40   0.32   int n
2004                                           4      74   0.30   0.30   ext n
                                              40     301   0.47   0.53   int un
                                              14     169   0.49   0.55   ext un
  46                                           5      29   0.36   0.30   int n
2005                                          39     267   0.35   0.37   int un
                                               9      98   0.37   0.38   ext un
  46                                           4      22   0.23   0.45   int n
2006                                                                          .
  48  Hradec Kralove, 0.40  No data           12     165   0.47   0.34   int n
2004  Czech Republic  2.0            USNO      9     147   0.51   0.37   ext n
                                               8     146   0.42   0.34   int un
                                               7     140   0.46   0.37   ext un
  48                                           4      32   0.70   0.27   int n
2005                                           3      29   0.90   0.32   ext n
                                               8      58   0.51   0.25   int un
                                               3      31   0.59   0.34   ext un
  49  Sweden,         1.0   35 x 35'  1.0"    49     172   0.24   0.19   int n
1999  Kvistaberg                     USNO     15      78   0.32   0.20   ext n
  49                                         191     866   0.20   0.22   int n
2000                                          53     368   0.47   0.29   ext n
  49                                         521    1817   0.29   0.31   int n
2001                                         132     635   0.43   0.39   ext n
  49                                         836    3177   0.34   0.27   int n
2002                                         145    1014   0.66   0.43   ext n
  49                                        1188    4742   0.30   0.26   int n
2003                                         228    1745   0.64   0.42   ext n
                                             879    3599   0.36   0.34   int un
                                             182    1377   0.64   0.45   ext un
  49                                        1023    3580   0.26   0.24   int n
2004                                         109     721   0.59   0.42   ext n
                                             247     865   0.31   0.33   int un
                                              23     169   0.90   0.44   ext un
  49                                         512    1743   0.33   0.28   int n
2005                                          31     205   0.76   0.46   ext n
                                             192     615   0.40   0.37   int un
                                               8      48   0.78   0.45   ext un
  49                                           6      36   0.39   0.40   int un
2006                                                                           .
  54  Brorfelde,      0.77  No data            3      12   0.19   0.26   int n
2003  Danmark         2.3            USNO      7      21   1.20   0.76   int un
  57  Yugoslavia,     0.14  30 x 20'  1.2"     3      37   1.51   1.44   int n
2001  Belgrade        1.6             GSC
  57                                           3      28   0.42   0.38   int n
2002
  57  Serbia and                               7      56   1.09   0.89   int n
2003  Montenegro                               4      24   3.36   1.01   int un
  57                  0.40  12 x 11'  0.7"    77     633   0.49   0.44   int n
2004                  4.1            UCAC      3      32   0.40   0.56   ext n
                                              14     137   0.31   0.37   int un
                                               4      85   0.37   0.33   ext un
  71  Bulgaria,       0.50  28 x 18'  1.1"     6      28   0.36   0.50   int n
1999  National Obs.   1.7             GSC      3      19   0.39   0.42   ext n
  71                                          12      78   0.74   0.74   int n
2000                                           3      32   0.98   0.54   ext n
  71                                          15      50   1.36   0.48   int n
2002                                          27     139   1.24   0.69   int un
                                               8      60   0.90   0.74   ext un
  71                                          15      65   0.94   0.69   int un
2004                                           4      21   0.36   0.76   ext un
  71                                           5      16   0.72   0.49   int n
2005                                          39     172   1.02   0.84   int un
                                               6      40   0.77   0.69   ext un
  71                                           5      30   0.58   0.31   int n
2006                                           9      29   0.51   0.42   int un
  84  Russia,         0.3    9 x 7'  1.5"      9      80   0.41   0.36   ext n
2002  Pulkovo Obs.    3.2            USNO
  84                                          35     488   0.52   0.37   ext n
2003                                          47     387   0.48   0.56   ext un
  84                                          90     923   0.36   0.32   ext n
2004                                           3      40   0.58   0.36   int un
                                              61     451   0.46   0.36   ext un
  84  Pulkovo Obs.,   0.33  15 x 15'  1.0"    38     640   0.17   0.16   int n
2005  Normal Asgr.    3.0            UCAC    101    2384   0.28   0.27   ext n
                                              22     303   0.25   0.24   int un
                                              73    1255   0.33   0.29   ext un
  84                                          52    2756   0.13   0.12   int n
2006                                          74    3631   0.26   0.22   ext n
                                              12      90   0.34   0.25   int un
                                              15     185   0.35   0.28   ext un
  89  Ukraine,        0.70   8 x 6'   0.7"     8     381   0.19   0.20   int n
2004  Nikolaev AO     2.8            USNO      6     356   0.27   0.22   ext n
  94  Russia, Sime-   1.0    6 x 5'     1"     6      29   0.40   0.33   int n
2002  iz, INASAN      2.2            USNO
  94                                           6      28   0.75   0.95   int n
2006                                                                          .
  95  Ukraine,        0.68  53 x 35'  2.2"     6     111   0.19   0.12   int n
2006  CrAO            0.9                                                     .                                             
  97  Israel,         1.0   13 x 13'  0.7"   163     668   0.70   0.78   int n
2003  Wise Obs.       7.0            USNO     51     343   0.99   0.92   ext n
                                              66     269   0.68   0.78   int un
                                              18     128   0.65   0.92   ext un
  97                                         151     565   0.46   0.36   int n
2004                                          65     362   0.51   0.42   ext n
                                              63     269   0.61   1.33   int un
                                              36     218   0.53   1.54   ext un
  97                                          29     118   0.17   0.41   int n
2005                                           3      18   0.27   0.28   ext n
                                              32     186   0.45   0.40   int un
                                               9     117   0.63   0.42   ext un
  97                                          19      96   0.26   0.24   int n
2006                                                                           .
 104  Italy, San      0.40  21 x 21'  2.5"    14      63   0.39   0.32   int n
1999  Marccello       2.0             GSC      6      42   1.73   0.82   ext n
 104                                          15      63   0.54   0.27   int n
2000                                           4      26   0.66   0.47   ext n
 104                                          78     296   0.50   0.36   int n
2001                                 USNO     22     118   0.39   0.50   ext n
 104                                          46     175   0.50   0.38   int n
2002                                           7      49   0.68   0.41   ext n
 104                                           6      25   0.34   0.23   int n
2003                                          18      66   0.54   0.92   int un
 104                                          66     239   0.40   0.35   int n
2004                                          88     378   0.75   0.43   int un
                                               7      65   0.35   0.22   ext un
 104                                          71     313   0.44   0.39   int n
2005                                           7      66   0.57   0.47   ext n
                                             131     654   0.82   0.62   int un
                                              30     286   0.65   0.56   ext un
 104                                         580    2298   0.55   0.58   int n
2006                                         109     792   0.57   0.58   ext n
                                              24      97   1.17   1.01   int un
 106  Slovenia,       0.36  36 x 36'  2.0"   305    1003   0.48   0.45   int n
1999  Crni vrh        2.4            USNO     52     231   0.53   0.48   ext n
 106                                         531    2118   0.40   0.35   int n
2000                                         129     717   0.37   0.38   ext n
 106                                         568    2087   0.41   0.34   int n
2001                                         164     923   0.42   0.34   ext n
 106                                         434    1468   0.40   0.37   int n
2002                                          51     339   0.38   0.37   ext n
 106                                        3029   12363   0.38   0.34   int n
2003                                         638    4747   0.47   0.41   ext n
                                            1306    5508   0.44   0.40   int un
                                             315    2339   0.47   0.45   ext un
 106                                        2696    8966   0.31   0.28   int n
2004                                         140     978   0.30   0.26   ext n
                                             344    1142   0.41   0.38   int un
                                              34     217   0.37   0.36   ext un
 106                                        2684    9408   0.32   0.31   int n
2005                                         254    1592   0.32   0.32   ext n
                                             240     840   0.45   0.44   int un
                                              19     119   0.41   0.43   ext un

 106                                        2264    9749   0.37   0.40   int n
2006                                         138    1112   0.34   0.41   ext n
                                              21      84   0.43   0.42   int un
 107  Italy,          0.40  14 x 10'  2.1"     4      12   0.40   0.34   int n
2003  Cavezzo         2.2            USNO
 107                                           3       9   0.42   0.14   int un
2004                                                                          .
 108  Italy,          0.30  14 x 12'  2.0"    21      76   0.89   0.84   int n
1999  Montelupo       1.7             GSC      9      39   0.74   0.68   ext n
 108                                           8      33   0.45   0.51   int n
2000
 108                                           7      39   1.10   0.99   int n
2002                                 USNO      3      21   1.12   0.43   ext n
 108                                          12      73   1.60   1.50   int n
2003                                           6      51   1.75   1.52   ext n
                                              14      67   1.26   1.60   int un
                                               4      32   1.96   1.37   ext un
 108                                           9      31   1.15   0.66   int n
2004                                          14     130   0.92   1.12   int un
                                               7      96   1.17   1.04   ext un
 108                                           5      19   0.61   0.77   int n
2005                                          11      52   0.64   1.09   int un
                                               3      22   0.33   1.02   ext un
 108                                           3      11   0.35   1.10   int n
2006                                                                          .
 113  Germany,        0.50  13 x 10'    2"    12      47   0.17   0.24   int n
1999  Schonbrunn      2.3            USNO      5      25   0.47   0.52   ext n
 113                                          20     136   0.53   0.28   int n
2000                                           7      59   0.31   0.28   ext n
 113                                          25     167   0.34   0.26   int n
2001
 113                                          77     378   0.51   0.41   int n
2002                                           7      97   0.73   0.47   ext n
 113                                          56     221   0.35   0.29   int n
2003                                           7      49   0.38   0.40   ext n
                                             213    1058   0.45   0.38   int un
                                              42     434   0.58   0.48   ext un
 113                                         107     443   0.36   0.28   int n
2004                                          11      80   0.28   0.27   ext n
                                             180     937   0.44   0.34   int un
                                              41     419   0.56   0.42   ext un
 113                                          38     178   0.26   0.33   int n
2005                                           6      51   0.35   0.18   ext n
                                             103     635   0.43   0.38   int un
                                              22     307   0.46   0.41   ext un
 113                                          77     527   0.43   0.32   int n
2006                                          17     268   0.39   0.27   ext n
                                              19      77   1.79   0.74   int un
 117  Germany,        0.20  15 x 11'  2.5"    26     322   1.37   0.85   int n
2000  Sendling        2.0             GSC     19     331   1.67   1.18   ext n
 117                                          16     162   0.37   0.52   int n
2001                                          14     161   0.92   1.36   ext n
 118  Slovakia,       0.57  14 x 10'  1.7"    26     130   0.22   0.16   int n
1999  Modra           3.3            USNO     42     262   0.37   0.30   ext n
 118                                          14      54   0.20   0.18   int n
2000                                          20     122   0.31   0.28   ext n
 118                                          20      77   0.18   0.21   int n
2001                                          11      60   0.29   0.33   ext n
 118                                          16      64   0.24   0.16   int n
2002
 118                                          23     252   0.27   0.18   int n
2003                                          10     193   0.39   0.24   ext n
 118                                         182    1463   0.56   0.46   int un
2003                                          98    1147   0.56   0.48   ext un
 118                                          52     241   0.36   0.24   int n
2004                                           4      64   0.12   0.17   ext n
                                              79     467   0.48   0.50   int un
                                              23     280   0.56   0.45   ext un
 118                                          72     360   0.30   0.20   int n
2005                                          11     122   0.18   0.17   ext n
                                             139     718   0.48   0.54   int un
                                              24     260   0.45   0.34   ext un
 118                                          58     299   0.20   0.18   int n
2006                                          12     129   0.15   0.12   ext n
                                              18      71   0.43   0.40   int un
                                               3      18   0.44   0.60   ext un
 120  Croatia,        0.41  45 x 45'  2.6"   340    1399   0.51   0.35   int n
1999  Visnjan         1.9            USNO    314    2008   0.58   0.40   ext n
 120                                         257    1133   0.64   0.40   int n
2000                                         188    1306   0.62   0.39   ext n
 120                                          83     297   0.80   0.45   int n
2001                                          34     149   0.75   0.47   ext n
 120                                          14      48   0.65   0.33   int n
2002                                                                          .
 121  Ukraine,        0.70  10 x 8'     2"    11      86   0.46   0.57   int n
1999  Kharkov Univ.   2.8             GSC      4      69   0.61   0.72   ext n
 121                                           9     106   0.36   0.39   int n
2000                                           7     115   0.62   0.59   ext n
 121                                           3      21   0.53   0.48   int n
2001                                           3      23   0.38   0.41   ext n
 122  France,         0.40  No data            4      19   0.40   0.43   int n
2001  Pises Obs.      1.9            USNO 
 122                                           9      51   0.22   0.24   int n
2002
 122                                           3      10   0.33   0.38   int n
2004
 122                                          73     273   0.43   0.33   int n
2006                                           5      37   0.26   0.35   ext n
 126  Italy,          0.40  17 x 17' 1.8"      4      50   1.15   0.80   int n
2003  Monte Viseggi   2.4             GSC
                                              13      82   0.97   0.88   int un
                                               6      51   1.28   1.67   ext un
 126                                           5      27   0.42   0.33   int n
2004                                           8      75   0.42   0.29   int un
                                               4      44   0.62   0.26   ext un
 127  Germany,        0.19  30 x 20'  2.4"     8      36   0.14   0.08   int n
1999  Bornheim        0.8             GSC     12      61   0.37   0.48   ext n
 127                                           7      38   0.08   0.15   int n
2000                                           6      34   0.37   0.41   ext n
 127                                          19     106   0.16   0.15   int n
2001                                          21     147   0.40   0.35   ext n
 127                                          32     186   0.12   0.12   int n
2002                                          34     230   0.50   0.39   ext n
 127                                          55     447   0.12   0.14   int n
2003                                          45     424   0.35   0.36   ext n
                                              62     459   0.14   0.16   int un
                                              55     458   0.27   0.28   ext un
 127                                          29     204   0.12   0.12   int n
2004                                          15     150   0.21   0.21   ext n
                                              18     174   0.16   0.21   int un
                                              15     162   0.27   0.28   ext un
 127                                          31     285   0.13   0.12   int n
2005                                          26     262   0.26   0.19   ext n
                                              31     293   0.16   0.12   int un
                                              24     264   0.30   0.23   ext un

 127                                          28     220   0.13   0.12   int n
2006                                          10     188   0.24   0.31   ext n
                                              13      84   0.11   0.13   int un
                                              10      87   0.22   0.38   ext un
 130  Italy,          0.4   15 x 10'  1.2"    10      40   0.35   0.27   int n
1999  Lumezzane       2.6            USNO
 130                                          19      69   0.24   0.22   int n
2000                                           4      13   0.46   0.33   ext n
 130                                          14      54   0.37   0.19   int n
2001
 130                  0.4   10 x 9'   1.0"     9      39   0.20   0.18   int n
2002                  1.8            USNO
 130                  0.4   15 x 10'  1.0"    30     162   0.38   0.34   int n
2003                  1.8            USNO     27     101   0.32   0.40   int un
 130                                          63     245   0.23   0.27   int n
2004                                          58     242   0.34   0.29   int un
                                               3      23   0.85   0.37   ext un
 130                                          41     169   0.28   0.21   int n
2005                                          49     233   0.31   0.32   int un
                                               4      61   0.45   0.38   ext un
 130                                          59     223   0.27   0.25   int n
2006                                          39     162   0.33   0.28   int un
 132  France,         0.26  45 x 30'  3.5"    18      75   0.35   0.34   int n
2002  Bedoin          0.9            USNO      5      36   0.62   0.55   ext n
 132                  0.30  25 x 17'  2.0"    12      39   0.62   0.76   int n
2003                  0.9            USNO     43     160   0.73   0.35   int un
                                               9      55   0.66   0.35   ext un
 132                                          17      52   0.68   0.51   int un
2004                                                                           .
 133  France,         0.20  33 x 22'  2.6"    16      51   0.27   0.27   int n
1999  Les Tardieux    0.7            USNO
 133                                           5      15   0.42   0.44   int n
2000
 133                                          11      36   0.47   0.30   int n
2001                                                                          .
 138  France,         0.20  36 x 24'  2.8"     4      12   0.48   0.43   int n
1999  Village-Neuf    0.8             GSC
 138                                          20     243   0.38   0.33   int n
2002                                          10     202   0.38   0.26   ext n
 138                                          87     287   0.56   0.42   int n
2003                                           4     109   0.38   0.60   int un
 138                                           7      21   0.33   0.44   int n
2004
 138                                         183     621   0.41   0.36   int n
2005                                          12      80   0.38   0.35   ext n
                                              35     116   0.54   0.49   int un
 138                                          31     104   0.70   0.55   int n
2006                                                                          .
 143  Switzerland,    0.40  20 x 20'  2.4"    12      57   0.49   0.30   int n
1999  Gnosca          1.6             GSC      5      40   0.56   0.56   ext n
 143                                          14     100   0.37   0.19   int n
2000                                           3      21   0.96   0.39   ext n
 143                                          19     184   0.36   0.32   int n
2001                                           6      76   0.87   0.78   ext n
 143                                          29     196   0.44   0.42   int n
2002                                           8      90   0.52   0.67   ext n
 143                                          23     104   0.60   0.51   int n
2003                                          24     131   0.95   0.69   int un
                                               8      64   0.81   0.76   ext un
 143                                           4      30   0.16   0.16   int n
2004