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Дата изменения: Thu Apr 12 19:48:04 2007
Дата индексирования: Mon Oct 1 19:35:36 2012
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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 October, 2006
--------------------------------------------------------------------------------- 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" 19 126 0.772 0.550 Uccle 2.1 GSC 046 Czech Rep., 0.57 16 x 10' 1.3" 2 8 0.302 0.630 Klet 3.0 USNO 071 Bulgaria, 0.50 28 x 18' 1.1" 1 3 0.453 0.238 National Obs. 1.7 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 5 197 0.191 0.142 Normal Asgr. 3.0 UCAC 095 Ukraine, 0.64 53 x 35' 2.1" 1 64 0.101 0.060 CrAO 0.9 USNO 104 Italy, San 0.40 21 x 21' 2.5" 184 755 0.689 0.783 Marccello 2.0 GSC 106 Slovenia, 0.36 36 x 36' 2.0" 1005 4192 0.402 0.456 Crni vrh 2.4 USNO 113 Germany, 0.50 13 x 10' 2" 15 122 0.610 0.283 Schonbrunn 2.3 USNO 118 Slovakia, 0.57 14 x 10' 1.7" 20 103 0.213 0.212 Modra 3.3 USNO 122 France, 0.40 No data 21 93 0.634 0.387 Pises Obs. 1.9 USNO 127 Germany, 0.19 30 x 20' 2.4" 7 40 0.085 0.088 Bornheim 0.8 GSC 130 Italy, 0.4 15 x 10' 1.0" 17 62 0.217 0.316 Lumezzane 1.8 USNO 143 Switzerland, 0.40 20 x 20' 2.4" 5 54 0.266 0.256 Gnosca 1.64 GSC 145 Belgium,Gra- 0.20 24 x 18' 2.2" 2 11 0.040 0.045 venwezel Obs. 0.7 ACT 151 Switzerland, 0.25 24 x 16' 0.9" 12 123 0.239 0.175 Eschenberg 2.0 USNO 152 Lithuania 0.35 70 x 70' 4.1" 5 50 0.767 0.777 Moletai AO 1.2 GSC 160 Italy, Castel- 0.25 14 x 9' 2.2" 3 18 0.291 0.176 martini 1.7 GSC 170 Spain, Obs. 0.31 No data 5 16 0.095 0.173 de Begues 2.0 GSC 185 Switzerland, 0.61 23 x 15' 0.9" 73 261 0.449 0.422 jur.-Vicques 2.1 USNO 198 Germany, 0.24 12 x 9' 2.0 20 120 0.247 0.215 Wildberg 2.4 USNO 204 Italy, Schia- 0.60 12 x 12' 1.4" 6 23 0.139 0.128 parelli Obs. 2.8 USNO 224 France, 0.30 29 x 19' 1.1" 121 405 0.619 0.466 Ottmarsheim 1.68 USNO 232 Spain, Masqu- 0.25 13 x 9' 2.0" 2 6 0.247 0.318 efa Observ. 1.8 GSC 233 Italy, Sauro 0.25 15 x 10' 2.3" 2 6 0.482 0.332 Donati Ast.Obs. 1.6 USNO 240 Germany, Her- 0.40 15 x 10' 2.4" 20 159 0.277 0.261 renberg Sternw. 1.6 USNO 246 Czech Repub., 1.06 33 x 33' 1.9" 24 147 0.414 0.439 KLENOT 3.2 USNO 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 824 3180 0.176 0.137 Spacewatch II 4.7 USNO 294 USA 0.41 No data 1 4 0.203 0.349 Astroph. Obs. 2.6 GSC 300 Japan, 0.5 78 x 78' 2.3" 17 72 0.370 0.397 Bisei Center 1.3 ACT 361 4 44 0.913 0.842 379 Japan, Hama 0.25 17 x 13' 2.1" 4 171 0.190 0.196 -matsu-Yuto 1.25 ACT 423 Australia, 0.2 30 x 20' 2.3" 1 11 0.132 0.111 North Ryde 0.8 UCAC 434 Italy, 0.18 10 x 7' 1.3" 3 14 0.328 0.243 S.Benedetto Po 1.6 GSC 445 Spain, 0.20 18 x 18' 1.4" 1 3 0.110 0.050 Valencia 2.2 USNO 448 USA, Desert 0.30 21 x 21' 2.4" 17 54 0.271 0.365 Moon Observat. 2.0 USNO 460 USA, Area 52 0.30 20 x 20' 1.9" 1 9 0.795 0.788 Obs., Nashville 2.2 GSC 461 Hungary, JATE 0.60 28 x 19' 1.1" 70 439 0.174 0.136 Asteroid Surv. 1.8 USNO 473 Italy, 0.30 No data 2 6 0.291 0.085 Remanzacco 0.8 GSC 493 Spain, var. No data 24 150 0.703 0.516 Calar Alto USNO 510 4 15 0.132 0.119 511 France, Haute 1.20 12 x 12' 0.7" 1 3 0.123 0.185 Provence 7.2 USNO 540 Austria, 0.60 20 x 15' 3.5" 2 14 0.141 0.124 Linz 1.5 GSC 557 Czech Rep., 0.65 20 x 13' 1.6" 11 116 0.485 0.362 Ondrejov 2.3 USNO 560 Italy, Madon- 0.40 17 x 10' 2.6" 1 5 0.063 0.064 na di Dossob. 2.0 GSC 561 Hungary, 0.60 28 x 19' 1.1" 5 15 0.301 0.339 Piszkesteto 1.8 USNO 568 USA, 2.24 18 x 18' 0.4" 10 39 0.045 0.052 Mauna Kea 22.0 USNO 585 1 7 0.451 0.184 608 USA, 1.2 96 x 96' 1.4" 264 792 0.253 0.225 Haleakala-AMOS 2.2 USNO 619 Spain, 0.51 14 x 11' 2.8" 3 13 0.191 0.101 Sabadell 2.0 GSC 621 Germany, Ber- 0.60 11 x 10' 1.2" 45 197 0.211 0.201 gisch Gladbach 3.1 USNO 627 France, 0.26 19 x 12' 3" 1 4 0.135 0.092 Blauvac 1.2 GSC 639 Germany, 0.35 14 x 11' 2.3" 2 26 0.163 0.085 Dresden 1.5 GSC 644 USA, Palomar 1.2 No data 16729 113871 0.153 0.146 Mountain/NEAT 673 USA, Table 0.61 22 x 22' 0.3" 8 25 0.021 0.012 Mountain 9.0 ACT 682 USA, 0.25 23 x 15' 1.8" 13 75 0.428 0.244 Kanab 1.0 GSC 683 USA, Good- 0.36 20 x 20' 2.5" 1039 7212 0.647 0.684 ricke-Pigott 4.0 GSC 691 USA, 0.88 390 x 30' 1.1" 10162 63825 0.217 0.209 Spacewatch 4.6 USNO 693 USA, 1.5 No data 8 31 0.199 0.073 Catalina St. USNO 695 USA, var. No data 25 100 0.081 0.067 Kit Peak USNO 699 USA, Lowell, 0.59 173 x 173' 2.5" 1293 5090 0.565 0.515 LONEOS 1.1 USNO 701 USA, Junk Bond 0.4 24 x 16' 1.8" 50 309 0.455 0.468 Obs., 2.5 ACT 703 USA, Catalina 0.41 175 x 175' 2.6" 23747 153228 0.572 0.536 Sky Survey 1.2 USNO 704 USA, 1.0 94 x 72' 2.2" 15703 119972 0.604 0.580 Lincoln Lab. 2.2 USNO 705 USA, 3.5 No data 11 46 0.080 0.072 Apache Point 711 USA, 0.76 46 x 46' 1.3" 10 30 0.817 0.258 McDonald Obs. 2.3 GSC 715 USA, 0.30 23 x 15' 1.8" 7 25 0.384 0.308 Las Cruces 1.0 USNO 719 USA, 0.36 23 x 17 4" 1 5 0.475 0.084 Etscorn Obs. 1.3 GSC 726 USA, 0.28 18 x 12' 2.9" 1 5 0.853 1.117 Brainerd 1.8 USNO 735 USA, 0.46 No data 1 3 0.110 0.226 George Obs. USNO 808 Argentina, 0.5 60 x 60' 0.8" 12 55 0.746 0.438 Carl.U.Cesco 3.8 USNO 844 Uruguay, 0.35 28 x 28' 3.3" 3 15 0.306 0.167 Los Molinos 2.2 GSC 850 USA, Cordell- 0.30 No data 25 101 0.529 0.620 Lorenz Obs. 1.7 GSC 926 USA, Tenagra 0.50 No data 6 27 0.134 0.157 II Observat. 5.0 GSC 939 Spain, 0.20 15 x 11' 2.8" 1 3 0.045 0.025 Obs. Rodeno 2.0 USNO 941 Spain, Obs. 0.26 21 x 21' 2.4" 13 45 0.130 0.133 Pla D'Arguin. 1.7 GSC 947 France, Sa- 0.60 25 x 25' 1" 2 6 0.201 0.557 int-Sulpice 3.4 USNO 958 France, 0.32 13 x 9' 2.1" 66 198 0.583 0.499 Obs. de Dax 1.8 USNO A13 Obs. Naef, 0.3 39 x 26' 1.6 39 125 0.358 0.284 Switzerland 1.2 UCAC A17 Guidestar Obs., 0.20 No data 1 3 0.078 0.045 Weinheim, Germ. 1.8 UCAC A24 New Millennium 0.36 12 x 12' 1.4 21 82 0.479 0.393 Obs., Italy 3.9 GSC A41 Rezman Obs., 0.41 55 x 38' 3.0 31 96 0.352 0.275 Slovenia 0.9 UCAC A44 Altschwendt, 0.30 17 x 13' 1.5 28 118 0.245 0.310 Austria 1.8 USNO A48 Verona, 0.30 No data 3 16 0.219 0.197 Italy 1.5 USNO A50 Andrushivka, 0.60 23 x 23' 1.4 37 132 0.314 0.302 Ukraine 4.5 USNO A53 Peschiera del 0.25 12 x 9' 1.0 2 16 0.482 0.287 Garda, Italy 2.5 USNO A62 Aichtal, 0.30 27 x 20' 1.2 4 23 0.195 0.070 Germany 1.2 USNO A67 Chiusa di Pe- 0.30 23 x 15' 1.8 1 79 0.181 0.171 sio, Italy 1.0 USNO A74 Bergen-Enkh. 0.36 17 x 17' 0.8 1 4 0.058 0.013 Obs., Germany 1.8 UCAC A79 Zvezdno Obsht. 0.25 18 x 14' 1.4 9 40 0.716 0.655 Obs.,Bulgaria 1.2 USNO A87 Rimbach, 0.35 40 x 28' 0.6 1 5 0.327 0.376 Germany 3.0 USNO A88 Bolzaneto, 0.20 21 x 16' 2.2 3 9 0.471 0.372 Italy 2.0 UCAC A89 Sterni Obs., 0.20 28 x 21' 2.1 2 8 0.369 0.383 Kempten, Germ. 1.5 UCAC A94 Cormons, 0.36 18 x 12' 0.5 10 43 0.690 0.355 Italy 2.9 UCAC-2 A97 Stammersdorf, 0.13 35 x 26' 3.2 3 23 0.441 0.335 Austria 1.0 USNO A99 Oss. del Monte 0.4 27 x 27' 1.6 6 27 0.390 0.226 Baldo, Italy 3.2 USNO B01 Taunus Obs., 0.6 62 x 42' 1.9 2 8 0.066 0.087 Germany 2.0 USNO B09 Capannoli, 0.25 24 x 16' 1.9 1 8 0.449 0.614 Italy 1.6 USNO B20 Obs. Carmeli- 0.13 No data 3 27 0.217 0.391 ta, Spain 0.8 UCAC B21 Gaisberg Obs., No data 2 14 0.203 0.084 Austria B22 Obs. d'Ager, 0.21 No data 1 5 0.242 0.098 Spain 1.2 UCAC B23 Fiamene, 0.50 No data 3 9 0.077 0.291 Italy 4.0 USNO D35 Lulin Observ., 1.0 12 x 11' 0.5 462 1490 0.190 0.174 Taiwan 8.0 USNO E12 Siding Spring 0.5 No data 2536 12713 0.396 0.377 Surv.,Australia UCAC E14 Ngunnawal, 0.25 15 x 11' 2 16 57 0.710 0.487 Australia 1.2 USNO E17 Leura, 0.25 21 x 21' 2.5 2 6 0.323 0.130 Australia 1.7 USNO F84 Hibiscus Obs., 0.36 No data 10 36 0.501 0.316 Fr. Polynesia 1.0 UCAC G92 Jarnac Obser. 0.35 No data 139 525 0.494 0.448 U.S.A. f/2 USNO G96 Mt. Lemmon 1.5 66 x 66' 1.0 18257 95873 0.280 0.219 Survey, U.S.A. f/2 UCAC G97 Astr. League 0.3 No data 4 24 0.102 0.090 Alpha Obs.,USA 3.1 USNO G98 Calvin-Rehob. 0.41 22 x 14' 0.6 12 58 0.190 0.142 Obs., U.S.A. 3.4 USNO H06 New Mexico Ski- 0.25 56 x 37' 2.2 42 135 0.629 0.547 es Obs., Germ. 0.8 UCAC H07 7300 Observ., 0.45 No data 249 1208 0.423 0.402 Canada f/3 GSC-ACT H45 Petit Jean 0.41 No data 14 106 0.145 0.224 Mount., USA 1.4 UCAC H51 Greiner Res. 0.36 No data 17 61 0.941 0.388 Obs., USA UCAC H55 Antares Obs. 0.40 21 x 21' 2.4 17 63 0.577 1.441 U.S.A. f/5.8 USNO H67 Stonegate Obs., 0.35 19 x 19' 2 5 37 0.277 0.260 U.S.A. 2.45 USNO H68 Red Barn Obs., 0.30 24 x 16' 1.8 3 14 0.612 1.046 Ty Ty, USA 1.0 USNO H98 Dark Roseanne 0.20 20 x 15' 2 6 0.573 0.254 Obs., USA 0.8 USNO H99 1 3 0.172 0.305 J63 San Gabriel, 0.13 36 x 27' 2.8 2 12 0.126 0.192 Spain 0.6 UCAC J70 Obs. Astr. El 0.20 No data 2 10 0.100 0.115 Palmar, Spain USNO J87 La Canada, 0.30 16 x 16' 1.4 1 3 0.115 0.215 Spain 1.2 USNO J88 Strawberry Fi- 0.30 9 x 7' 1.5 3 9 0.317 0.375 eld Obs., Engl. 3.0 USNO J94 Abbeydale, 0.2 16 x 10' 2 3 12 0.154 0.121 England 2.0 UCAC J95 Great Shefford, 0.30 25 x 25' 1.5 25 84 0.199 0.152 England 1.9 USNO J97 Alginet, 0.25 No data 1 3 0.188 0.076 Spain 1.0 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 October, 2006
--------------------------------------------------------------------------------- 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" 2 24 0.615 0.488 Uccle 2.1 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 19 285 0.286 0.231 Normal Asgr. 3.0 UCAC 095 Ukraine, 0.64 53 x 35' 2.1" 1 64 0.160 0.082 CrAO 0.9 USNO 104 Italy, San 0.40 21 x 21' 2.5" 39 317 0.727 0.738 Marccello 2.0 GSC 106 Slovenia, 0.36 36 x 36' 2.0" 39 312 0.360 0.526 Crni vrh 2.4 USNO 113 Germany, 0.50 13 x 10' 2" 4 84 0.561 0.235 Schonbrunn 2.3 USNO 118 Slovakia, 0.57 14 x 10' 1.7" 6 55 0.107 0.107 Modra 3.3 USNO 122 France, 0.40 No data 2 16 0.230 0.221 Pises Obs. 1.9 USNO 127 Germany, 0.19 30 x 20' 2.4" 3 25 0.128 0.100 Bornheim 0.8 GSC 143 Switzerland, 0.40 20 x 20' 2.4" 2 48 0.361 0.360 Gnosca 1.64 GSC 151 Switzerland, 0.25 24 x 16' 0.9" 3 81 0.362 0.243 Eschenberg 2.0 USNO 198 Germany, 0.24 12 x 9' 2.0 5 57 0.358 0.163 Wildberg 2.4 USNO 203 Italy, 0.13 28 x 19' 2.2" 2 8 0.217 0.255 GiaGa Obs. 0.8 USNO 224 France, 0.30 29 x 19' 1.1" 5 33 0.509 0.683 Ottmarsheim 1.68 USNO 240 Germany, Her- 0.40 15 x 10' 2.4" 6 91 0.437 0.265 renberg Sternw. 1.6 USNO 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 108 933 0.238 0.185 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 1 9 0.501 0.398 Bisei Center 1.3 ACT 361 1 13 0.529 0.861 379 Japan, Hama 0.25 17 x 13' 2.1" 3 170 0.325 0.234 -matsu-Yuto 1.25 ACT 408 Japan, 0.30 No data 20 120 0.723 0.634 Nyukasa 0.8 GSC 423 Australia, 0.2 30 x 20' 2.3" 2 18 0.456 0.283 North Ryde 0.8 UCAC 428 Australia, 0.25 28 x 18' 2.1" 1 3 0.162 0.068 Reeady Creek 1.7 GSC 448 USA, Desert 0.30 21 x 21' 2.4" 1 6 0.074 0.105 Moon Observat. 2.0 USNO 460 USA, Area 52 0.30 20 x 20' 1.9" 1 11 0.861 0.747 Obs., Nashville 2.2 GSC 461 Hungary, JATE 0.60 28 x 19' 1.1" 29 296 0.207 0.199 Asteroid Surv. 1.8 USNO 493 Spain, var. No data 22 161 0.771 0.545 Calar Alto USNO 510 1 6 0.124 0.046 557 Czech Rep., 0.65 20 x 13' 1.6" 1 58 0.097 0.041 Ondrejov 2.3 USNO 568 USA, 2.24 18 x 18' 0.4" 3 18 0.098 0.106 Mauna Kea 22.0 USNO 621 Germany, Ber- 0.60 11 x 10' 1.2" 19 120 0.243 0.247 gisch Gladbach 3.1 USNO 639 Germany, 0.35 14 x 11' 2.3" 2 26 0.178 0.115 Dresden 1.5 GSC 644 USA, Palomar 1.2 No data 9532 90315 0.171 0.151 Mountain/NEAT 682 USA, 0.25 23 x 15' 1.8" 8 64 0.458 0.303 Kanab 1.0 GSC 683 USA, Good- 0.36 20 x 20' 2.5" 751 7112 0.896 0.846 ricke-Pigott 4.0 GSC 691 USA, 0.88 390 x 30' 1.1" 5425 49486 0.266 0.229 Spacewatch 4.6 USNO 695 USA, var. No data 105 355 0.108 0.103 Kit Peak USNO 701 USA, Junk Bond 0.4 24 x 16' 1.8" 6 107 0.489 0.412 Obs., 2.5 ACT 703 USA, Catalina 0.41 175 x 175' 2.6" 10760 100721 0.571 0.556 Sky Survey 1.2 USNO 704 USA, 1.0 94 x 72' 2.2" 7326 83877 0.703 0.638 Lincoln Lab. 2.2 USNO 705 USA, 3.5 No data 633 4417 0.085 0.075 Apache Point 808 Argentina, 0.5 60 x 60' 0.8" 6 39 0.577 0.349 Carl.U.Cesco 3.8 USNO 850 USA, Cordell- 0.30 No data 3 21 0.443 0.575 Lorenz Obs. 1.7 GSC 926 USA, Tenagra 0.50 No data 1 9 0.209 0.233 II Observat. 5.0 GSC A13 Obs. Naef, 0.3 39 x 26' 1.6 1 6 0.153 0.166 Switzerland 1.2 UCAC A24 New Millennium 0.36 12 x 12' 1.4 2 18 0.245 0.176 Obs., Italy 3.9 GSC A41 Rezman Obs., 0.41 55 x 38' 3.0 6 24 0.450 0.284 Slovenia 0.9 UCAC A44 Altschwendt, 0.30 17 x 13' 1.5 14 95 0.537 0.463 Austria 1.8 USNO A48 Verona, 0.30 No data 1 8 0.249 0.168 Italy 1.5 USNO A50 Andrushivka, 0.60 23 x 23' 1.4 142 568 0.496 0.359 Ukraine 4.5 USNO A53 Peschiera del 0.25 12 x 9' 1.0 1 13 0.223 0.270 Garda, Italy 2.5 USNO A79 Zvezdno Obsht. 0.25 18 x 14' 1.4 1 7 0.720 0.259 Obs.,Bulgaria 1.2 USNO A94 Cormons, 0.36 18 x 12' 0.5 2 14 0.556 0.392 Italy 2.9 UCAC-2 A97 Stammersdorf, 0.13 35 x 26' 3.2 1 13 0.836 0.519 Austria 1.0 USNO B09 Capannoli, 0.25 24 x 16' 1.9 1 10 0.468 0.628 Italy 1.6 USNO B16 Lipki, 0.41 No data 2 8 0.091 0.198 Russia 4.1 UCAC B19 Obs., Mataro 0.15 No data 4 16 0.582 0.563 Spain GSC B20 Obs. Carmeli- 0.13 No data 3 27 0.227 0.400 ta, Spain 0.8 UCAC B21 Gaisberg Obs., No data 2 14 0.379 0.289 Austria D35 Lulin Observ., 1.0 12 x 11' 0.5 30 188 0.164 0.222 Taiwan 8.0 USNO E12 Siding Spring 0.5 No data 613 5209 0.387 0.359 Surv.,Australia UCAC E14 Ngunnawal, 0.25 15 x 11' 2 3 18 0.304 0.317 Australia 1.2 USNO F84 Hibiscus Obs., 0.36 No data 3 17 0.606 0.316 Fr. Polynesia 1.0 UCAC G92 Jarnac Obser. 0.35 No data 24 168 0.557 0.378 U.S.A. f/2 USNO G96 Mt. Lemmon 1.5 66 x 66' 1.0 4732 40931 0.286 0.240 Survey, U.S.A. f/2 UCAC G97 Astr. League 0.3 No data 4 24 0.206 0.172 Alpha Obs.,USA 3.1 USNO H06 New Mexico Ski- 0.25 56 x 37' 2.2 2 12 0.274 0.311 es Obs., Germ. 0.8 UCAC H07 7300 Observ., 0.45 No data 42 418 0.415 0.355 Canada f/3 GSC-ACT H45 Petit Jean 0.41 No data 5 59 0.145 0.280 Mount., USA 1.4 UCAC H83 Oakton, 0.36 No data 2 12 0.151 0.588 USA USNO I22 Abbey Ridge 0.28 12 x 12' 1.4 10 30 0.116 0.099 Obs., Canada 2.8 USNO J94 Abbeydale, 0.2 16 x 10' 2 1 6 0.138 0.081 England 2.0 UCAC J95 Great Shefford, 0.30 25 x 25' 1.5 12 69 0.295 0.236 England 1.9 USNO