Development in progress : Current content of this specific page is meaningless !!!

This webpage is in development. Here will be made available updated data of our VLBI sources classification based on Allan standard deviation to assess their astrometric stability.

Restrict the sample of displayed sources :

1. to search for specific sources:
:
2a. Control the display by using the allan standard deviation classification :
Display AV0 source category :
Display AV1 source category :
Display AV2 source category :

2b. Use the rehabilitation process :
→ select the :

(rehab. max.) (no rehab.)

The rehabilitation process is based on Monte-Carlo principle. We simulate a thousand White noise random draws on the observational sampling of the source and compute their Allan diagrams. We count the number of such Allan diagram that diverge more than the source Allan diagram from a theoretical white noise Allan diagram. Their fraction with respect to the thousand draws quantify our trust (as a probability) to rehabilitate AV1 and AV2 sources into AV0 class. (Process is realised on both coordinates and we keep the minimal one)

Get the data :

3. to begin the creation of a data file
then, select in the parameters below those you want to include in the output file






using classical variance : wrms(dRAcDE) with respect to mean right ascension

using classical variance : wrms(dDE) with respect to mean declination

using classical variance : sqrt( wrms_dRAcDE**2*chi2_dRAcDE**2 + wrms_dDE**2*chi2_dDE**2 )

equal Allan standard deviation at 10 years of the smallest white noise Allan diagram which maximize right ascension cos(decl.) Allan diagram

equal Allan standard deviation at 10 years of the smallest white noise Allan diagram which maximize declination Allan diagram

using Allan variance : sqrt(Allan_index(dRAcDE)**2 + Allan_index(dDE)**2
































Finally, press and get the data by clicking on the icon below

Retrieve data from this webpage is unavailable at the moment !

Displayed sources : class AV0   class AV1   class AV2
Level of rehabilitation : 0 %
no rehabilitation

2358+189 0002-478 0003+380 0003-066 IIIZW2 0007+171 0008-264 0010+405 0013-005 0014+813 0017+200 0016+731 0019+058 0025+197 0035-252 0035+413 0039+230 NGC0262 0047+023 0047-579 0048-097 0048-427 0054+161 NGC0315 0055-059 0059+581 0104-408 0106+013 0107-610 0109+224 0110+495 0111+021 0112-017 0113-118 0115-214 0116-219 0118-272 0119+115 0119+041 0123+257 0130-171 0131-522 0133+476 0134+311 0135-247 0138-097 0146+056 0148+274 0149+218 0150-334 0151+474 0153+744 0159+723 0201+113 0202+149 0202-172 0202+319 0206+136 0208-512 0212+735 0215+015 0219+428 0220-349 0221+067 4C67.05 0227-369 0230-790 0229+131 0234-301 0235-618 0234+285 0235+164 0237-027 0237+040 0237-233 NGC1052 0239+175 0239+108 0241+622 0248+430 0252-549 0256+075 0256-005 0300+470 0302-623 0302+625 NGC1218 0306+102 0308-611 0307+380 0309+411 0312+100 3C84 0317+188 0319+121 0322+222 0325+395 0326+278 0332-403 0332+078 0334-546 NRAO140 CTA26 0338-214 0340+362 0341+158 0342+147 0346-279 0345+460 0347-211 NRAO150 0358+210 0400-319 0400+258 0402-362 0403-132 0405-385 0405-123 0406-127 0406+121 0409+229 0410+110 0414-189 0415+398 0420+022 0420-014 0420+417 0422-380 0422+004 0426-380 0426+273 3C120 0430+289 0434-188 0436-129 0437-454 0438-436 NRAO190 0440+345 0442+389 0446+112 0454-810 0451-282 0454-463 0454-234 0457+024 0458-020 0458+138 0502+049 0506-612 0454+844 0506+101 0507+179 0516-621 0515+208 0522-611 0521-365 0524-460 0524-485 0524+034 0530-727 0528-250 0528+134 0529+483 0534-611 0534-340 0537-441 0536+145 0537-286 0539-057 0544+273 0549-575 0548+378 0552+398 0554+242 0556+238 0600+177 0602+673 0605-085 0606-223 0607-157 0611+131 0609+607 0613+570 0620+389 0615+820 0627-199 0629-418 0632-235 0637-752 0637-337 0636+680 0641+392 0642+449 0646-306 0648-165 0650+371 0656+082 0657+172 0700-197 0707+476 0710+439 0711+356 0714+457 0716+714 0722+145 0723-008 0718+793 0723+219 0727-115 0729+259 0733-174 0735+178 0738-674 0736+017 0738+313 0738+491 0743-673 0742+103 0743-006 0743+259 0743+277 0745+241 0747+185 0748+126 0749+540 0754+100 0759+183 0800+618 0805+046 0805-077 0804+499 0805+410 0808+019 0812+020 0812+367 0814+425 0818-128 0820+560 0821+394 0823+033 0823-223 0826-373 0827+243 0829+046 0828+493 0831+557 0834-201 0833+585 0834+250 0836+710 0839+187 0847-120 0850+581 OJ287 0854-108 0859-140 0859+470 0906+015 0912+029 0912+297 0917+449 0919-260 0917+624 0920-397 0920+390 4C39.25 0925-203 0943+105 0945+408 0949+354 0951+268 0952+179 M81 OK290 0955+476 0955+326 0954+658 0958+346 1004-500 1004+141 1011+250 1012+232 1012-448 1013+054 1014+615 1015+359 1015+057 1016-311 1020+400 1022-665 1022+194 1023+131 1027-186 1030+415 1030+074 1032-199 1034-374 1034-293 1038+064 1038+52A 1040+244 1039+811 1042+071 1045-188 1044+719 1048-313 1049+215 1053+704 1053+815 1055+018 1057-797 1059+282 1101-536 1101+384 1104-445 1104+728 1111+149 1116-462 1116+128 1123+264 1124-186 1127-145 1128+385 1130+009 1133-032 1143-696 1143-245 1143-332 1144+402 1144-379 1145-071 1145+268 1147+245 1148-001 1149-084 1150+812 1150+497 1156-663 1156+295 1212+171 1213-172 1213+350 1215+303 1216+487 1219+285 1219+044 1221+809 1222+037 M84 1226+373 3C273B 3C274 1236+077 1237-101 1240+381 1243-160 1243-072 1244-255 1252+119 1251-713 3C279 1255-316 1255-177 1257+145 1300+580 1302-102 1306+360 1307+121 1308+326 1308+328 1308+554 1313-333 OP326 1324+224 1325-558 1327+504 1330+022 1334-127 1342+662 1342+663 1347+539 1348+308 1349-439 1351-018 1352-104 1354+195 1354-174 1354-152 1357+769 1402-012 1402+044 OQ208 1406-076 1406-267 1412-368 1413+135 1418+546 1417+385 1420-679 1423+146 1424+366 1424+240 1424-418 1428+370 1432+200 1435+638 1435-218 1441+252 OQ172 1443-162 1445-161 1448+762 1448-648 1451-375 1451-400 1454-354 1456+044 3C309.1 1459+480 1502+106 1502+036 1504+377 1504-166 1508+572 1508-055 1510-089 1511-100 1511-476 1514+197 1514-241 1520+437 1520+319 1519-294 1519-273 1532+016 1538+149 1547+507 1546+027 1548+056 1549-790 1555+001 1557+032 1556-245 1600+335 1601+112 1602-115 1604-333 1606+106 1608+243 1611+343 1611-710 1614+051 1610-771 1615+029 1616+063 1617+229 1619-680 1623+578 1622-253 1624+416 1622-297 1624-617 NGC6251 1633+38 1636+473 1637+574 NRAO512 1639+230 1639-062 1642+690 3C345 1647-296 1651+391 DA426 1656+477 1655+077 1656+053 1656-075 1657-261 1659+399 1657-562 1659-621 1705+018 1706-174 1717+178 1722+330 1726+455 1725+123 1725+044 NRAO530 1725-795 1732+389 1736+324 1738+499 1738+476 1739+522 1741-038 NGC6454 1743+173 1745+624 1746+470 1749+701 1749+096 1751+441 1751+288 1754+155 1758+388 1803+784 1800+440 1759-396 1758-651 3C371 1806+456 1806-458 1815-553 1823+689 1821+107 1823+568 1824-582 1830+285 1831-711 3C390.3 1842+681 1846+322 1849+670 1856+736 3C395 1908-201 1909+161 1920-211 1921-293 1923+210 1928+738 1925-610 1929+226 1932+204 1933-400 1936-155 1937-101 1935-692 1947+079 1954+513 1954-388 1958-179 2000+472 2000+148 2000-330 2007+777 2002-375 2005-489 2008-159 2013+163 2017+743 2021+614 2021+317 2029+121 3C418 2037-253 2052-474 2058-297 2059+034 2106+143 2106-413 2113+293 2109-811 2121+053 2123-463 2126-158 2127-096 2128-123 2131-021 2134+00 2136+141 2141+175 2142+110 2143-156 2144+092 2142-758 2145+067 2149+056 2149-306 2150+173 2155+312 2155-152 2155-304 VR422201 2201+315 2204-540 2205+166 2208-137 2209+236 2210-257 2214+350 2215+150 2216-038 2220-351 3C446 2227-088 2229+695 CTA102 2232-488 2234+282 2235+731 2236-572 2239+096 2243+047 2243-123 2244-372 2245-328 2250+194 3C454.3 2252-089 2253+417 2254+074 2254+024 2255-282 2300-683 2307+106 2309+454 2312-319 2314-409 2318+049 2319+317 2319+272 2319+444 2320+506 2320-035 2325+093 2325-150 2326-477 2329-162 2329-384 2331-240 2333-415 2335-027 2344+09A 2344-514 2345-167 2351+456 2351-154 2353-686 2353+816 2355-534 2355-106 2356+385 2357-318

Fatal error: Uncaught PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'tcc.svaRAcDE' in 'field list' in /homepages/8/d729192365/htdocs/PAGE_SOURCES_CLASSIFICATION/visualisation_data.php:96 Stack trace: #0 /homepages/8/d729192365/htdocs/PAGE_SOURCES_CLASSIFICATION/visualisation_data.php(96): PDO->query('SELECT tcc.name...') #1 {main} thrown in /homepages/8/d729192365/htdocs/PAGE_SOURCES_CLASSIFICATION/visualisation_data.php on line 96