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This Table contains results of our analysis of an "interior" accuracy of CCD positional Numbered Minor Planets observations carried out in indication month of current year. The observatories taken into consideration are given with their MPC codes and instrumental equipment. A number of considered Numbered Minor Planets and their processed positions is given together with a mean error of a single observation for RA and DEC. Only one night observations were used for getting these errors.

A visitor may click required MPC code number (blue color) and see the first 100 Kb information as to detailed test of CCD positions made with this MPC code and sent to the MPC Database. These information tables show the (O-C) values for each observation.

If you find any inaccurate recording, please, send us a letter for correction.

Internal errors April, 2008
--------------------------------------------------------------------------------- MPC Country, Diam., Scale, Number Number Mean errors of code Observa- Focus FOV Cata- of minor of single observation tory (m) log planets positions RA DE --------------------------------------------------------------------------------- " " 012 Belgium, 0.85 45 x 30' 0.9" 28 172 0.474 0.464 Uccle 2.1 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 9 295 0.146 0.149 Normal Asgr. 3.0 UCAC 104 Italy, San 0.40 21 x 21' 2.5" 49 154 0.479 0.484 Marccello 2.0 GSC 106 Slovenia, 0.36 36 x 36' 2.0" 570 2582 0.379 0.377 Crni vrh 2.4 USNO 113 Germany, 0.50 13 x 10' 2" 1 5 0.383 0.307 Schonbrunn 2.3 USNO 118 Slovakia, 0.57 14 x 10' 1.7" 8 54 0.278 0.202 Modra 3.3 USNO 127 Germany, 0.19 30 x 20' 2.4" 2 8 0.108 0.126 Bornheim 0.8 GSC 147 Italy, Osser. 0.40 16 x 16' 1.9" 1 3 0.159 0.419 Astr. di Suno 1.6 USNO 151 Switzerland, 0.25 24 x 16' 0.9" 4 20 0.241 0.152 Eschenberg 2.0 USNO 152 Lithuania 0.35 70 x 70' 4.1" 6 24 0.565 0.280 Moletai AO 1.2 GSC 169 Italy, 0.25 19 x 12' 1.3" 4 24 0.453 0.445 Rosignano 1.2 GSC 176 Spain, Obs. 0.20 35 x 24' 2.6" 12 36 0.272 0.200 Astr. de Cons. 1.4 USNO 185 Switzerland, 0.61 23 x 15' 0.9" 33 152 0.355 0.317 jur.-Vicques 2.1 USNO 198 Germany, 0.24 12 x 9' 2.0 14 74 0.376 0.148 Wildberg 2.4 USNO 204 Italy, Schia- 0.60 12 x 12' 1.4" 2 6 0.060 0.044 parelli Obs. 2.8 USNO 232 Spain, Masqu- 0.25 13 x 9' 2.0" 3 9 0.214 0.142 efa Observ. 1.8 GSC 246 Czech Repub., 1.06 33 x 33' 1.9" 10 81 0.213 0.296 KLENOT 3.2 USNO 247 Australia, 0.80 No data 2 8 0.094 0.181 Roving Obs. 3.5 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 1113 4509 0.194 0.169 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 1 4 0.540 1.068 Bisei Center 1.3 ACT 333 Canada,Desert 0.45 No data 137 975 0.573 0.525 Eagle Observ. ACT 379 Japan, Hama 0.25 17 x 13' 2.1" 4 20 0.224 0.203 -matsu-Yuto 1.25 ACT 432 Australia, 0.20 No data 2 12 1.149 0.407 Boambee 1.0 ACT 448 USA, Desert 0.30 21 x 21' 2.4" 30 108 0.325 0.346 Moon Observat. 2.0 USNO 461 Hungary, JATE 0.60 28 x 19' 1.1" 25 95 0.210 0.235 Asteroid Surv. 1.8 USNO 467 New Zealand, 0.50 No data 3 10 0.468 0.461 Auckland Obs. 3.2 USNO 557 Czech Rep., 0.65 20 x 13' 1.6" 6 79 0.100 0.131 Ondrejov 2.3 USNO 568 USA, 2.24 18 x 18' 0.4" 6 18 0.043 0.037 Mauna Kea 22.0 USNO 621 Germany, Ber- 0.60 11 x 10' 1.2" 26 97 0.305 0.371 gisch Gladbach 3.1 USNO 673 USA, Table 0.61 22 x 22' 0.3" 12 120 0.126 0.058 Mountain 9.0 ACT 683 USA, Good- 0.36 20 x 20' 2.5" 662 6438 0.740 0.725 ricke-Pigott 4.0 GSC 691 USA, 0.88 390 x 30' 1.1" 11799 77415 0.289 0.292 Spacewatch 4.6 USNO 701 USA, Junk Bond 0.4 24 x 16' 1.8" 24 141 0.435 0.276 Obs., 2.5 ACT 703 USA, Catalina 0.41 175 x 175' 2.6" 19243 123113 0.560 0.512 Sky Survey 1.2 USNO 704 USA, 1.0 94 x 72' 2.2" 26906 213157 0.529 0.541 Lincoln Lab. 2.2 USNO 711 USA, 0.76 46 x 46' 1.3" 12 36 0.399 0.433 McDonald Obs. 2.3 GSC 735 USA, 0.46 No data 4 12 0.434 0.600 George Obs. USNO 808 Argentina, 0.5 60 x 60' 0.8" 7 30 0.542 0.328 Carl.U.Cesco 3.8 USNO 842 USA, Gettys- 0.40 18 x 18' 1.1" 5 16 0.430 0.204 burg College 4.4 USNO 926 USA, Tenagra 0.50 No data 5 22 0.142 0.253 II Observat. 5.0 GSC 941 Spain, Obs. 0.26 21 x 21' 2.4" 1 3 0.362 0.566 Pla D'Arguin. 1.7 GSC A13 Obs. Naef, 0.3 39 x 26' 1.6 3 9 0.134 0.150 Switzerland 1.2 UCAC A37 Mueggelheim, 0.2 11 x 7' 1.8 3 14 0.289 0.260 Germany 2.0 USNO A44 Altschwendt, 0.30 17 x 13' 1.5 1 3 0.121 0.252 Austria 1.8 USNO A50 Andrushivka, 0.60 23 x 23' 1.4 119 577 0.384 0.394 Ukraine 4.5 USNO A57 Oss.Ast.Marg- 0.25 9 x 6 0.7 1 3 0.161 0.072 herita Hack,It. 2.5 UCAC A74 Bergen-Enkh. 0.36 17 x 17' 0.8 1 3 0.189 0.212 Obs., Germany 1.8 UCAC A77 Obs. Chante- 0.20 27 x 20' 2.1 249 858 0.463 0.383 Perdrix,France 1.86 USNO A88 Bolzaneto, 0.20 21 x 16' 2.2 1 3 0.133 0.049 Italy 2.0 UCAC A92 Urseanu Obs., 0.23 11 x 8' 1.6 1 4 0.233 0.106 Romania 1.5 USNO B03 Alter Satz- 0.35 30 x 20' 1.8 1 3 0.306 0.311 berg, Austria 2.6 USNO B04 Saint-Barthel. 0.81 13 x 13' 0.8 1 4 0.800 0.269 Obs., Italy 6.4 USNO B09 Capannoli, 0.25 24 x 16' 1.9 2 7 0.851 1.310 Italy 1.6 USNO B15 Inastars Obs., 0.36 No data 2 7 0.119 0.096 Germany USNO B19 Obs., Mataro 0.15 No data 9 51 0.348 0.320 Spain GSC B20 Obs. Carmeli- 0.26 19 x 12' 1.5 1 3 0.468 0.344 ta, Spain 1.3 UCAC B21 Gaisberg Obs., 0.60 23 x 16' 0.9 9 42 0.266 0.290 Austria 2.0 USNO B24 Cesson, 0.2 22 x 14' 0.9 1 3 0.414 0.284 France 2.2 UCAC B35 RAS Observ., 0.38 No data 1 3 0.752 0.450 1.1 UCAC B50 Corner Obs., 0.20 12 x 9' 2.2 1 4 0.384 0.135 Germany 0.9 USNO B60 Deep Sky Obs., 0.41 12 x 9' 1.8 8 39 0.315 0.241 Germany 1.8 UCAC B61 Sant Cugat 0.25 31 x 21' 1.8 4 12 0.423 0.431 Valles, Spain USNO B67 Stern. Mirast., 0.90 No data 1 3 0.245 0.397 Switzerland. 6.0 USNO B68 Mount Matajur 0.2 No data 2 11 0.177 0.148 Obs., Italy 0.6 UCAC D35 Lulin Observ., 1.0 12 x 11' 0.5 30 90 0.260 0.268 Taiwan 8.0 USNO D39 Shandong 1.0 12 x 12' 0.4 5 31 0.168 0.227 Univ., China 8.0 UCAC E16 Grove Creek, 0.30 27 x 18' 1.1 4 16 0.780 0.709 Australia 3.0 GSC E19 Kingsgrove, 0.35 9 x 9' 1.1 2 6 0.173 0.659 Australia 3.7 UCAC F65 Haleakala- 2.0 5 x 5' 0.2 1 3 0.313 0.987 Faulkes, Wales 20.0 USNO F85 Tiki Obs., 0.41 No data 60 180 0.308 0.287 Fr. Polynesia 3.3 G68 Sierra Stars 0.61 20 x 20' 0.8 6 24 0.133 0.487 Obs., USA 6.0 GSC-ACT G69 Thousand Oaks, 0.30 25 x 25' 1.8 6 42 0.260 0.132 U.S.A. 3.0 UCAC G89 Kachina Obs., 0.36 21 x 21' 1.2 3 17 0.037 0.020 Flagstaff,USA 4.0 UCAC G92 Jarnac Obser. 0.35 No data 86 360 0.323 0.342 U.S.A. f/2 USNO G96 Mt. Lemmon 1.5 66 x 66' 1.0 24587 122536 0.267 0.200 Survey, U.S.A. f/2 UCAC G98 Calvin-Rehob. 0.41 22 x 14' 0.6 13 58 0.309 0.244 Obs., U.S.A. 3.4 USNO H06 New Mexico Ski- 0.25 56 x 37' 2.2 65 233 0.364 0.473 es Obs., Germ. 0.8 UCAC H07 7300 Observ., 0.45 No data 43 286 0.298 0.318 Canada f/3 GSC-ACT H45 Petit Jean 0.41 No data 22 230 0.176 0.169 Mount., USA 1.4 UCAC H51 Greiner Res. 0.36 No data 24 107 0.538 0.348 Obs., USA UCAC H55 Antares Obs. 0.40 21 x 21' 2.4 51 164 0.465 0.254 U.S.A. f/5.8 USNO H76 Oakridge Obs. 0.08 63 x 49' 2.8 1 3 1.079 0.072 Miami, USA 0.5 USNO H87 Fenwick Obs., 0.25 No data 1 3 0.076 0.160 U.S.A. 1.2 ACT J24 Obs. Altamira 0.4 No data 3 15 0.137 0.069 Spain 4.0 USNO J26 The Spaceguard 0.36 No data 2 11 0.361 0.227 Centre, Wales USNO J27 El Guijo Obs., 0.20 No data 3 18 0.385 0.188 Madrid, Spain 1.0 USNO J28 Ja\'en, No data 2 6 0.243 0.122 Spain UCAC J34 2 7 0.318 0.297 J38 La Vara, 0.26 17 x 17' 2 1 3 0.051 0.040 Spain 2.0 USNO J40 Malaga, 0.20 17 x 12' 1.5 2 7 0.265 0.175 Spain 1.0 USNO J42 Puzol, 0.20 21 x 14' 1.7 2 12 0.137 0.217 Spain 1.6 USNO J47 Obs. Nazaret, 0.20 No data 7 21 0.211 0.271 Spain 1.3 UCAC J51 Obs. Atlante, 0.2 42 x 28' 1.5 6 18 0.570 0.244 Tenerife,Spain 1.8 USNO J87 La Canada, 0.30 16 x 16' 1.4 30 90 0.295 0.288 Spain 1.2 USNO J93 Mount Tuffley 0.25 21 x 16' 1.7 5 24 0.536 0.439 Obs., England 1.4 USNO J94 Abbeydale, 0.2 16 x 10' 2 6 18 0.262 0.311 England 2.0 UCAC J95 Great Shefford, 0.30 25 x 25' 1.5 25 97 0.334 0.249 England 1.9 USNO

This Table contains results of our analysis of an "exterior" accuracy of CCD positional Numbered Minor Planets observations carried out in indication month of current year. The observatories taken into consideration are given with their MPC codes and instrumental equipment. A number of considered Numbered Minor Planets and their processed positions is given together with a mean error of a single observation for RA and DEC. Several close night observations were used for getting these errors. A visitor may click required MPC code number (blue color) and see the first 100 Kb information as to detailed test of CCD positions made with this MPC code and sent to the MPC Database. These information tables show the (O-C) values for each observation.

If you find any inaccurate recording, please, send us a letter for correction.

External errors April, 2008
--------------------------------------------------------------------------------- MPC Country, Diam., Scale, Number Number Mean errors of code Observa- Focus FOV Cata- of minor of single observation tory (m) log planets positions RA DE --------------------------------------------------------------------------------- " " 012 Belgium, 0.85 45 x 30' 0.9" 3 38 0.427 0.358 Uccle 2.1 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 14 406 0.223 0.263 Normal Asgr. 3.0 UCAC 104 Italy, San 0.40 21 x 21' 2.5" 1 6 0.145 0.273 Marccello 2.0 GSC 106 Slovenia, 0.36 36 x 36' 2.0" 47 392 0.367 0.367 Crni vrh 2.4 USNO 118 Slovakia, 0.57 14 x 10' 1.7" 4 43 0.241 0.376 Modra 3.3 USNO 169 Italy, 0.25 19 x 12' 1.3" 3 21 0.413 0.458 Rosignano 1.2 GSC 198 Germany, 0.24 12 x 9' 2.0 3 26 0.129 0.333 Wildberg 2.4 USNO 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 213 1452 0.228 0.184 Spacewatch II 4.7 USNO 333 Canada,Desert 0.45 No data 46 698 0.643 0.622 Eagle Observ. ACT 415 Kambah, 0.36 14 x 10' 1.1" 1 4 0.391 0.172 Australia 1.6 UCAC 423 Australia, 0.2 30 x 20' 2.3" 1 6 0.080 0.101 North Ryde 0.8 UCAC 428 Australia, 0.25 28 x 18' 2.1" 1 4 0.055 0.408 Reeady Creek 1.7 GSC 432 Australia, 0.20 No data 2 12 1.109 0.448 Boambee 1.0 ACT 442 Spain, 0.36 No data 1 4 0.039 0.276 Gualda Observ. f/6 USNO 448 USA, Desert 0.30 21 x 21' 2.4" 2 18 0.372 0.398 Moon Observat. 2.0 USNO 461 Hungary, JATE 0.60 28 x 19' 1.1" 5 37 0.124 0.132 Asteroid Surv. 1.8 USNO 557 Czech Rep., 0.65 20 x 13' 1.6" 2 67 0.130 0.195 Ondrejov 2.3 USNO 621 Germany, Ber- 0.60 11 x 10' 1.2" 6 36 0.324 0.318 gisch Gladbach 3.1 USNO 673 USA, Table 0.61 22 x 22' 0.3" 22 182 0.085 0.046 Mountain 9.0 ACT 683 USA, Good- 0.36 20 x 20' 2.5" 501 6294 0.823 0.944 ricke-Pigott 4.0 GSC 689 USA, USNO 1.55 No data 99 456 0.210 0.199 Flagstaff ACT 691 USA, 0.88 390 x 30' 1.1" 8015 65996 0.298 0.297 Spacewatch 4.6 USNO 701 USA, Junk Bond 0.4 24 x 16' 1.8" 3 60 0.366 0.255 Obs., 2.5 ACT 703 USA, Catalina 0.41 175 x 175' 2.6" 7977 77898 0.576 0.541 Sky Survey 1.2 USNO 704 USA, 1.0 94 x 72' 2.2" 13929 158149 0.590 0.601 Lincoln Lab. 2.2 USNO 808 Argentina, 0.5 60 x 60' 0.8" 3 18 0.453 0.329 Carl.U.Cesco 3.8 USNO 926 USA, Tenagra 0.50 No data 1 7 0.098 0.159 II Observat. 5.0 GSC A50 Andrushivka, 0.60 23 x 23' 1.4 51 340 0.430 0.400 Ukraine 4.5 USNO A77 Obs. Chante- 0.20 27 x 20' 2.1 29 198 0.782 0.458 Perdrix,France 1.86 USNO B09 Capannoli, 0.25 24 x 16' 1.9 2 7 0.397 0.976 Italy 1.6 USNO B19 Obs., Mataro 0.15 No data 7 45 0.356 0.356 Spain GSC B21 Gaisberg Obs., 0.60 23 x 16' 0.9 6 35 0.471 0.593 Austria 2.0 USNO B66 Oss. di Casas- 0.40 No data 3 12 0.115 0.092 co, Italy 2.9 USNO B68 Mount Matajur 0.2 No data 2 15 0.212 0.204 Obs., Italy 0.6 UCAC D39 Shandong 1.0 12 x 12' 0.4 1 16 0.241 0.448 Univ., China 8.0 UCAC G68 Sierra Stars 0.61 20 x 20' 0.8 2 12 0.312 0.617 Obs., USA 6.0 GSC-ACT G69 Thousand Oaks, 0.30 25 x 25' 1.8 5 39 0.309 0.129 U.S.A. 3.0 UCAC G89 Kachina Obs., 0.36 21 x 21' 1.2 2 14 0.075 0.035 Flagstaff,USA 4.0 UCAC G92 Jarnac Obser. 0.35 No data 28 168 0.332 0.387 U.S.A. f/2 USNO G96 Mt. Lemmon 1.5 66 x 66' 1.0 4673 41144 0.270 0.225 Survey, U.S.A. f/2 UCAC H06 New Mexico Ski- 0.25 56 x 37' 2.2 19 104 0.625 0.806 es Obs., Germ. 0.8 UCAC H07 7300 Observ., 0.45 No data 10 115 0.297 0.446 Canada f/3 GSC-ACT H45 Petit Jean 0.41 No data 8 160 0.213 0.201 Mount., USA 1.4 UCAC H55 Antares Obs. 0.40 21 x 21' 2.4 3 19 0.650 0.281 U.S.A. f/5.8 USNO H76 Oakridge Obs. 0.08 63 x 49' 2.8 1 5 0.890 0.238 Miami, USA 0.5 USNO I22 Abbey Ridge 0.28 12 x 12' 1.4 2 6 0.273 0.233 Obs., Canada 2.8 USNO J24 Obs. Altamira 0.4 No data 3 17 0.121 0.089 Spain 4.0 USNO J26 The Spaceguard 0.36 No data 1 8 0.354 0.217 Centre, Wales USNO J27 El Guijo Obs., 0.20 No data 3 18 0.479 0.191 Madrid, Spain 1.0 USNO J42 Puzol, 0.20 21 x 14' 1.7 1 7 0.237 0.246 Spain 1.6 USNO J93 Mount Tuffley 0.25 21 x 16' 1.7 2 15 0.509 0.309 Obs., England 1.4 USNO J95 Great Shefford, 0.30 25 x 25' 1.5 8 59 0.277 0.316 England 1.9 USNO