{"id":"F2017L01352","name":"National Measurement (Recognized-Value Standard of Measurement of Position) Determination 2017","slug":"national-measurement-recognized-value-standard-of-measurement-of-position-determination-2017","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":439362,"registerId":"F2017L01352-fast-fetch-1775955420542","compilationNumber":null,"startDate":"2026-04-12","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"National Measurement (Recognized-Value Standard of Measurement of Position) Determination 2017","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\n![](image.001.jpeg)\n\n \n\nNational Measurement (Recognized-Value Standard of Measurement of Position) Determination 2017\n\nI, Dr R. Bruce Warrington, Chief Metrologist, National Measurement Institute, make the following determination.\n\nDated 11 October 2017\n\nR. BRUCE WARRINGTON\n\nDr R. Bruce Warrington\n\nChief Metrologist\n\n \n\n \n\n \n\nContents\n\n1  Name\n\n2  Commencement\n\n3  Authority\n\n4  Definitions\n\n5  Schedules\n\n6  Recognized-value standards of measurement in the Australian Fiducial Network\n\n7  Calculation of global Cartesian coordination at an epoch t years\n\nSchedule 1—Recognized-value standards of measurement in the Australian Fiducial Network\n\nSchedule 2—Repeals\n\nRecognized-value standard of measurement of position 2012 (No. 1)\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n1  Name\n\n  This instrument is the National Measurement (Recognized-Value Standard of Measurement of Position) Determination 2017.\n\n2  Commencement\n\n  This instrument commences the day after registration.\n\n3  Authority\n\n  This instrument is made under section 8A(1) of the National Measurement Act 1960.\n\n4  Definitions\n\nNote: Recognized-value standard of measurement is defined in the Act.\n\n  In this instrument:\n\nAct means the National Measurement Act 1960.\n\nReference Ellipsoid means the Geodetic Reference System 1980 (GRS80) ellipsoid with a semi-major axis (a) of 6 378 137 metres exactly and an inverse flattening (1/f) of 298.257 222 101.\n\nNote: The Geodetic Reference System 1980 could in 2017 be viewed on the International Union of Geodesy and Geophysics (IUGG) website ([http://www.iugg.org](http://www.iugg.org/resolutions)).\n\nReference Epoch means 2020.0.\n\nReference Frame means the Geocentric Datum of Australia 2020 (GDA2020) realised by the coordinates of the Australian Fiducial Network (AFN) geodetic stations, referred to in Schedule 1 of this instrument, in the International Terrestrial Reference Frame 2014 (ITRF2014) at the Reference Epoch.\n\nNote 1: The Geocentric Datum of Australia 2020 could in 2017 be viewed on the Intergovernmental Committee on Surveying and Mapping’s website ([http://www.icsm.gov.au](http://www.icsm.gov.au/gda/tech.html)).\n\nNote 2: The International Terrestrial Reference Frame 2014 (ITRF2014) could in 2017 be viewed on the International Earth Rotation and Reference Systems Service’s (IERS) website ([https://www.iers.org](https://www.iers.org/TN38)).\n\n5  Schedules\n\n  Each instrument that is specified in a Schedule to this instrument is amended or repealed as set out in the applicable items in the Schedule concerned, and any other item in a Schedule to this instrument has effect according to its terms.\n\n6  Recognized-value standards of measurement in the Australian Fiducial Network\n\n1.     The positions listed in Schedule 1 and in the stated Reference Ellipsoid and Reference Frame are recognized-value standards of measurement of the physical quantity position for geodetic stations in the Australian Fiducial Network (AFN).\n2.     Uncertainties listed in Schedule 1 are such that X±u(X) represents a 95% confidence interval, and similarly for the other quantities.\n3.     For conversion from global Cartesian coordinates to latitude, longitude and ellipsoidal height the Reference Ellipsoid must be used.\n\n\n7  Calculation of global Cartesian coordinates at an epoch t years\n\n  Global Cartesian coordinates of the AFN can be expressed at an epoch t (years) through the application of the following linear model using the coordinates   (X, Y, Z) and velocities (VX, VY, VZ) listed in Schedule 1:\n\n![](image.002.png)\n\n  This model is valid for 15 years either side of the Reference Epoch:\n\n![](image.003.png)\n\n \n\n \n\n \n\nSchedule 1—Recognized-value standards of measurement in the Australian Fiducial Network\n\nNote: See sections 6 and 7.\n\n \n\n- Coordinates (m) at 2020.0 Coordinate Uncertainty (m) Velocity (m / year) Velocity Uncertainty (m / year)\n- Site X Y Z u(X) u(Y) u(Z) VX VY VZ u(VX) u(VY) u(VZ)\n- Ceduna (SA) -3753473.1960 3912741.0310 -3347959.6998 0.0244 0.0249 0.0229 -0.0421 0.0024 0.0501 0.0002 0.0002 0.0002\n- Manton Dam (NT) -4091359.6096 4684606.4258 -1408579.1371 0.0098 0.0105 0.0072 -0.0355 -0.0137 0.0576 0.0002 0.0001 0.0002\n- Mt Stromlo (ACT) -4467103.2062 2683039.4818 -3666948.7613 0.0100 0.0080 0.0090 -0.0367 0.0006 0.0452 0.0002 0.0002 0.0002\n- Sydney (NSW) -4648240.8666 2560636.4510 -3526317.7982 0.0107 0.0082 0.0093 -0.0352 -0.0015 0.0453 0.0002 0.0002 0.0002\n- Tidbinbilla (ACT) -4460996.9609 2682557.0875 -3674442.6411 0.0104 0.0082 0.0093 -0.0368 0.0007 0.0452 0.0002 0.0002 0.0002\n- Hobart (TAS) -3950072.2586 2522415.3710 -4311637.4095 0.0094 0.0079 0.0098 -0.0395 0.0083 0.0411 0.0002 0.0002 0.0002\n- Melbourne (VIC) -4130636.7623 2894953.1442 -3890530.2534 0.0098 0.0083 0.0094 -0.0393 0.0042 0.0448 0.0002 0.0002 0.0002\n- Parkes (NSW) -4554255.2088 2816652.4429 -3454059.6981 0.0107 0.0085 0.0093 -0.0363 -0.0015 0.0467 0.0002 0.0002 0.0002\n- Hillarys (WA) -2355572.1203 4886093.2099 -3343993.6599 0.0081 0.0112 0.0091 -0.0478 0.0106 0.0491 0.0002 0.0001 0.0002\n- Bundaberg (QLD) -5125977.5335 2688801.2479 -2669890.2146 0.0113 0.0082 0.0082 -0.0311 -0.0105 0.0490 0.0002 0.0002 0.0002\n- Kalgoorlie (WA) -2862346.1852 4678388.0851 -3245553.1345 0.0091 0.0120 0.0096 -0.0460 0.0069 0.0505 0.0002 0.0001 0.0002\n- Norfolk Island (NSW) -5457454.4185 1166108.4501 -3078178.9928 0.0120 0.0071 0.0088 -0.0245 -0.0095 0.0398 0.0001 0.0002 0.0002\n- Albany (WA) -2441715.0069 4629128.6333 -3633362.7930 0.0091 0.0125 0.0105 -0.0479 0.0122 0.0478 0.0002 0.0002 0.0002\n- Burnie (TAS) -3989420.9187 2699532.9340 -4166619.7796 0.0100 0.0083 0.0101 -0.0397 0.0070 0.0426 0.0002 0.0002 0.0002\n- Liawenee (TAS) -3973071.4774 2612492.7923 -4238233.8906 0.0099 0.0083 0.0103 -0.0396 0.0076 0.0418 0.0002 0.0002 0.0002\n- Burakin (WA) -2511499.0840 4892172.2095 -3220858.0287 0.0088 0.0124 0.0096 -0.0471 0.0088 0.0501 0.0002 0.0001 0.0002\n- Kellerberrin (WA) -2527265.3639 4813192.3590 -3324975.7001 0.0087 0.0124 0.0097 -0.0472 0.0095 0.0496 0.0002 0.0001 0.0002\n- Norseman (WA) -2844072.6212 4589300.5857 -3385094.4352 0.0091 0.0117 0.0097 -0.0463 0.0080 0.0498 0.0002 0.0001 0.0002\n- Hyden (WA) -2603131.0876 4717143.4739 -3402748.0718 0.0088 0.0122 0.0098 -0.0471 0.0096 0.0493 0.0002 0.0001 0.0002\n- Warakurna (WA) -3583757.5864 4538446.7043 -2683056.6943 0.0090 0.0101 0.0081 -0.0420 -0.0014 0.0537 0.0002 0.0001 0.0002\n- Buckleboo (SA) -3863896.2323 3723681.6406 -3436456.0075 0.0105 0.0102 0.0097 -0.0415 0.0024 0.0493 0.0002 0.0002 0.0002\n- Beechworth (VIC) -4297030.4444 2827160.2393 -3759485.1907 0.0112 0.0091 0.0102 -0.0381 0.0023 0.0453 0.0002 0.0002 0.0002\n- Yeelana (SA) -3787467.5311 3685160.4447 -3559786.1635 0.0093 0.0091 0.0090 -0.0420 0.0038 0.0486 0.0002 0.0002 0.0002\n- Saltia (SA) -3998750.5658 3608798.4710 -3404651.9508 0.0098 0.0093 0.0090 -0.0407 0.0014 0.0493 0.0002 0.0002 0.0002\n- West Wylong (NSW) -4471091.7769 2868001.2873 -3519326.3705 0.0103 0.0083 0.0091 -0.0370 -0.0005 0.0466 0.0002 0.0002 0.0002\n- Bairnsdale (VIC) -4265638.5627 2701208.9154 -3884372.5851 0.0118 0.0094 0.0109 -0.0381 0.0034 0.0442 0.0002 0.0002 0.0002\n- Port Kembla (NSW) -4599806.4397 2558778.9950 -3590075.1156 0.0116 0.0087 0.0100 -0.0356 -0.0007 0.0450 0.0002 0.0002 0.0002\n- Douglas Daly (NT) -4079102.7002 4661682.9452 -1515238.0262 0.0113 0.0122 0.0079 -0.0360 -0.0128 0.0574 0.0002 0.0001 0.0002\n- Toowoomba (QLD) -4994482.4972 2663618.0089 -2931171.1575 0.0121 0.0088 0.0091 -0.0324 -0.0079 0.0481 0.0002 0.0002 0.0002\n- Andamooka (SA) -4035145.8277 3741808.3918 -3213842.4359 0.0098 0.0094 0.0088 -0.0403 -0.0002 0.0504 0.0002 0.0002 0.0002\n- Gabo Island (VIC) -4379911.9542 2537393.8597 -3867574.2197 0.0112 0.0087 0.0103 -0.0370 0.0026 0.0436 0.0002 0.0002 0.0002\n- Coober Pedy (SA) -3927330.9419 3965547.9511 -3077376.8165 0.0093 0.0093 0.0083 -0.0409 -0.0005 0.0514 0.0002 0.0002 0.0002\n- Katherine (NT) -4147413.8177 4581462.5900 -1573359.0837 0.0098 0.0103 0.0072 -0.0358 -0.0128 0.0572 0.0002 0.0001 0.0002\n- Wagin (WA) -2455774.3624 4735625.3849 -3485038.1973 0.0083 0.0112 0.0094 -0.0477 0.0110 0.0486 0.0002 0.0001 0.0002\n- Ravensthorpe (WA) -2664852.2528 4602498.8360 -3509390.6909 0.0088 0.0116 0.0097 -0.0471 0.0100 0.0488 0.0002 0.0001 0.0002\n- Mt Cavanagh (NT) -3929412.1216 4183417.4556 -2773890.6215 0.0096 0.0099 0.0083 -0.0404 -0.0028 0.0530 0.0002 0.0002 0.0002\n- Wiluna (WA) -2871830.1215 4930661.0498 -2841419.6642 0.0083 0.0109 0.0083 -0.0452 0.0039 0.0524 0.0002 0.0001 0.0002\n- Tibooburra (NSW) -4383698.9008 3417850.9363 -3117538.7823 0.0110 0.0096 0.0093 -0.0379 -0.0029 0.0501 0.0002 0.0002 0.0002\n- Ivanhoe (NSW) -4310476.3634 3190508.6627 -3441393.5542 0.0098 0.0085 0.0088 -0.0384 -0.0001 0.0480 0.0002 0.0002 0.0002\n- Broome (WA) -3234208.1569 5134028.8375 -1958815.1914 0.0088 0.0113 0.0075 -0.0413 -0.0046 0.0560 0.0002 0.0001 0.0002\n- Nhill (VIC) -4035390.1167 3193137.6972 -3755906.1988 0.0100 0.0089 0.0095 -0.0402 0.0038 0.0464 0.0002 0.0002 0.0002\n- Warramunga (NT) -4193700.6368 4289270.2773 -2160904.9454 0.0100 0.0102 0.0077 -0.0375 -0.0088 0.0553 0.0002 0.0002 0.0002\n- Mt Magnet (WA) -2629526.8926 4978260.9506 -2987965.8480 0.0082 0.0112 0.0086 -0.0463 0.0064 0.0514 0.0002 0.0001 0.0002\n- Larrimah (NT) -4208011.6662 4479077.7734 -1701337.7347 0.0111 0.0114 0.0078 -0.0360 -0.0122 0.0568 0.0002 0.0001 0.0002\n- Leonora (WA) -2905528.2178 4775175.2276 -3062280.3715 0.0085 0.0109 0.0087 -0.0455 0.0053 0.0515 0.0002 0.0001 0.0002\n- Tuross Head (NSW) -4477434.2788 2572331.0877 -3731376.5980 0.0101 0.0079 0.0092 -0.0365 0.0010 0.0444 0.0002 0.0002 0.0002\n- Bald Rock (VIC) -4188591.0788 3020461.0294 -3731086.9242 0.0097 0.0083 0.0092 -0.0391 0.0027 0.0461 0.0002 0.0002 0.0002\n- Horn Island (QLD) -4960946.6284 3834778.7885 -1164513.3408 0.0110 0.0094 0.0069 -0.0291 -0.0205 0.0564 0.0002 0.0002 0.0002\n- Mt Emu (VIC) -4065544.7571 3013958.9753 -3869590.3370 0.0106 0.0090 0.0101 -0.0398 0.0044 0.0453 0.0002 0.0002 0.0002\n- Stony Point (VIC) -4111952.8138 2856387.6375 -3938194.1385 0.0097 0.0082 0.0095 -0.0393 0.0046 0.0444 0.0002 0.0002 0.0002\n- Alice Springs (NT) -4052052.7360 4212835.9841 -2545104.5883 0.0095 0.0098 0.0079 -0.0393 -0.0052 0.0540 0.0002 0.0002 0.0002\n- Roslyn Bay (QLD) -5121089.4297 2863243.2415 -2493143.3274 0.0164 0.0118 0.0100 -0.0311 -0.0118 0.0503 0.0002 0.0002 0.0002\n- Larrakeyah (NT) -4072230.1682 4713609.1735 -1366659.3497 0.0113 0.0122 0.0077 -0.0354 -0.0139 0.0577 0.0002 0.0001 0.0002\n- Broken Hill (NSW) -4235701.4667 3372839.2104 -3360245.2676 0.0104 0.0092 0.0092 -0.0390 -0.0003 0.0489 0.0002 0.0002 0.0002\n- Cape Ferguson (QLD) -5054583.3968 3275504.1131 -2091538.4726 0.0108 0.0086 0.0075 -0.0312 -0.0143 0.0529 0.0002 0.0002 0.0002\n- Wallal(WA) -3060306.4338 5165740.4734 -2144656.6187 0.0086 0.0113 0.0077 -0.0425 -0.0023 0.0552 0.0002 0.0001 0.0002\n- Spring Bay (TAS) -3988046.7045 2498705.5367 -4290516.8742 0.0113 0.0090 0.0113 -0.0392 0.0079 0.0411 0.0002 0.0002 0.0002\n- Eucla (WA) -3410392.1827 4229088.8868 -3330284.3849 0.0093 0.0103 0.0091 -0.0439 0.0043 0.0504 0.0002 0.0002 0.0002\n- Coonabarabran (NSW) -4687675.6162 2786705.8985 -3297865.3737 0.0110 0.0085 0.0092 -0.0352 -0.0034 0.0472 0.0002 0.0002 0.0002\n- Arubiddy (WA) -3183133.6965 4393393.4410 -3342516.9213 0.0086 0.0100 0.0088 -0.0449 0.0057 0.0503 0.0002 0.0002 0.0002\n- Baladonia (WA) -3002034.1354 4472882.6994 -3403723.4851 0.0087 0.0106 0.0091 -0.0457 0.0072 0.0498 0.0002 0.0002 0.0002\n- Mainoru (NT) -4306320.1817 4444883.0498 -1537980.0653 0.0115 0.0116 0.0078 -0.0348 -0.0140 0.0571 0.0002 0.0002 0.0002\n- Bingleburra (NSW) -4743762.8083 2559346.3040 -3399327.9127 0.0115 0.0085 0.0096 -0.0345 -0.0030 0.0459 0.0002 0.0002 0.0002\n- Portland (VIC) -3926098.9113 3110284.5779 -3935497.1170 0.0110 0.0096 0.0108 -0.0408 0.0057 0.0452 0.0002 0.0002 0.0002\n- Rocklands (NT) -4445289.3356 4025824.8715 -2164421.6420 0.0108 0.0103 0.0079 -0.0360 -0.0102 0.0549 0.0002 0.0002 0.0002\n- Thevanard (SA) -3735034.6262 3908923.6990 -3372521.9630 0.0100 0.0102 0.0094 -0.0422 0.0027 0.0499 0.0002 0.0002 0.0002\n- Exmouth (WA) -2417814.5397 5401707.5260 -2370380.3097 0.0080 0.0117 0.0079 -0.0452 0.0031 0.0533 0.0002 0.0001 0.0002\n- Fitzroy Crossing (WA) -3547066.8913 4918047.3803 -1971686.4311 0.0095 0.0115 0.0077 -0.0401 -0.0064 0.0562 0.0002 0.0001 0.0002\n- Gnangara (WA) -2368688.0424 4881316.7075 -3341794.9823 0.0081 0.0114 0.0092 -0.0477 0.0105 0.0492 0.0002 0.0001 0.0002\n- Flinders Island (TAS) -4147112.4604 2567153.7563 -4096196.5874 0.0109 0.0087 0.0106 -0.0385 0.0056 0.0425 0.0002 0.0002 0.0002\n- New Norcia (WA) -2414152.3781 4907778.6372 -3270644.2049 0.0088 0.0125 0.0096 -0.0475 0.0097 0.0496 0.0002 0.0001 0.0002\n- Tom Price (WA) -2706524.4877 5221344.9511 -2461226.3825 0.0087 0.0124 0.0084 -0.0447 0.0021 0.0536 0.0002 0.0001 0.0002\n- North Star (NSW) -4854589.1186 2752849.4480 -3078537.4439 0.0117 0.0088 0.0091 -0.0338 -0.0060 0.0479 0.0002 0.0002 0.0002\n- Cooladdi (QLD) -4707740.5468 3213770.3725 -2852875.4128 0.0122 0.0098 0.0091 -0.0352 -0.0068 0.0504 0.0002 0.0002 0.0002\n- Birdsville (QLD) -4355739.6469 3740194.4994 -2769171.5091 0.0113 0.0105 0.0090 -0.0378 -0.0053 0.0523 0.0002 0.0002 0.0002\n- Boulia (QLD) -4496431.9209 3785936.3941 -2467980.3960 0.0111 0.0101 0.0083 -0.0363 -0.0083 0.0534 0.0002 0.0002 0.0002\n- Hughenden (QLD) -4833918.6817 3485758.7318 -2266147.6174 0.0125 0.0101 0.0084 -0.0334 -0.0118 0.0531 0.0002 0.0002 0.0002\n- Julia Creek (QLD) -4687826.4385 3697044.2812 -2237232.1656 0.0118 0.0103 0.0083 -0.0345 -0.0111 0.0539 0.0002 0.0002 0.0002\n- Neutral Junction (NT) -4123557.7648 4274539.2155 -2318810.9705 0.0122 0.0124 0.0089 -0.0383 -0.0072 0.0548 0.0002 0.0002 0.0002\n- Lambina (SA) -3957272.6859 4088878.0706 -2872293.9157 0.0097 0.0098 0.0084 -0.0404 -0.0022 0.0525 0.0002 0.0002 0.0002\n- Mt Doreen (NT) -3916571.9695 4428011.7783 -2388294.0779 0.0119 0.0126 0.0089 -0.0396 -0.0055 0.0548 0.0002 0.0001 0.0002\n- Jervois (NT) -4237233.1317 4077484.9793 -2462642.0014 0.0117 0.0116 0.0087 -0.0380 -0.0068 0.0540 0.0002 0.0002 0.0002\n- Coen (QLD) -4956013.1005 3710714.3539 -1528615.7435 0.0150 0.0117 0.0081 -0.0305 -0.0179 0.0555 0.0002 0.0002 0.0002\n- Laura (QLD) -5000453.3825 3572456.4740 -1701780.3240 0.0132 0.0107 0.0079 -0.0307 -0.0169 0.0547 0.0002 0.0002 0.0002\n- Northcliffe (WA) -2311144.1346 4712785.4091 -3611358.5979 0.0084 0.0119 0.0100 -0.0483 0.0128 0.0476 0.0002 0.0001 0.0002\n- Kilkivan (QLD) -5073245.0941 2668929.5700 -2787555.0317 0.0127 0.0091 0.0090 -0.0316 -0.0094 0.0486 0.0002 0.0002 0.0002\n- Meadow (WA) -2373305.7835 5181466.1948 -2854287.0682 0.0084 0.0126 0.0089 -0.0467 0.0069 0.0514 0.0002 0.0001 0.0002\n- Yarragadee (WA) -2389026.6159 5043317.0600 -3078529.5586 0.0080 0.0114 0.0087 -0.0472 0.0085 0.0505 0.0002 0.0001 0.0002\n- North Bourke (NSW) -4587935.3985 3116314.3026 -3139419.8358 0.0113 0.0092 0.0093 -0.0363 -0.0040 0.0490 0.0002 0.0002 0.0002\n- Harding River Dam (WA) -2713833.2684 5303935.1133 -2269513.7542 0.0081 0.0113 0.0077 -0.0441 0.0007 0.0542 0.0002 0.0001 0.0002\n- Port Headland (WA) -2867484.8313 5242158.9057 -2223764.3419 0.0085 0.0118 0.0079 -0.0434 -0.0006 0.0547 0.0002 0.0001 0.0002\n- Murchison (WA) -2556630.0412 5097138.2863 -2848384.7843 0.0083 0.0117 0.0085 -0.0462 0.0058 0.0518 0.0002 0.0001 0.0002\n- Gascoyne (WA) -2482748.2739 5243145.5489 -2642213.9892 0.0093 0.0143 0.0094 -0.0458 0.0047 0.0525 0.0002 0.0001 0.0002\n- Normanton (QLD) -4728960.2818 3819993.0037 -1923811.0896 0.0140 0.0122 0.0085 -0.0334 -0.0137 0.0550 0.0002 0.0002 0.0002\n- King Island (TAS) -3953946.8747 2888865.8595 -4073040.9386 0.0096 0.0083 0.0097 -0.0403 0.0066 0.0437 0.0002 0.0002 0.0002\n- Hernani (NSW) -4887853.3609 2545879.9420 -3202305.1047 0.0124 0.0088 0.0097 -0.0333 -0.0053 0.0466 0.0002 0.0002 0.0002\n- Christmas Island (WA) -1696344.7537 6039590.0096 -1149275.0866 0.0075 0.0132 0.0072 -0.0419 -0.0015 0.0538 0.0002 0.0001 0.0002\n- Lord Howe Island (NSW) -5082756.5673 1944860.6793 -3315203.5926 0.0116 0.0076 0.0092 -0.0304 -0.0056 0.0433 0.0002 0.0002 0.0002\n- Eidsvold (QLD) -5049378.8605 2785132.1517 -2716869.1227 0.0147 0.0102 0.0100 -0.0319 -0.0097 0.0493 0.0002 0.0002 0.0002\n- Nebo (QLD) -5068236.7291 3081711.6353 -2337561.3869 0.0163 0.0122 0.0101 -0.0314 -0.0126 0.0515 0.0002 0.0002 0.0002\n- Aramac (QLD) -4827919.3114 3349814.0161 -2472422.8950 0.0114 0.0093 0.0082 -0.0338 -0.0102 0.0521 0.0002 0.0002 0.0002\n- Tambo (QLD) -4820440.5593 3216767.7633 -2656380.4455 0.0154 0.0116 0.0104 -0.0341 -0.0088 0.0511 0.0002 0.0002 0.0002\n- Mulgathing (SA) -3833528.0707 3961621.4057 -3197513.8708 0.0102 0.0103 0.0092 -0.0415 0.0009 0.0509 0.0002 0.0002 0.0002\n- Kidman Springs (NT) -4017486.2068 4628837.9322 -1759281.7840 0.0171 0.0183 0.0106 -0.0372 -0.0107 0.0568 0.0002 0.0001 0.0002\n- Renner Springs (NT) -4192073.9978 4368928.5517 -1999279.4623 0.0109 0.0112 0.0080 -0.0370 -0.0100 0.0559 0.0002 0.0002 0.0002\n- Esperance (WA) -2800842.3479 4500734.2962 -3534898.1927 0.0171 0.0260 0.0185 -0.0466 0.0094 0.0489 0.0002 0.0002 0.0002\n- Jabiru (NT) -4236472.9665 4559859.3702 -1388764.0422 0.0170 0.0175 0.0095 -0.0347 -0.0147 0.0576 0.0002 0.0001 0.0002\n- Yellowdine (WA) -2698549.7646 4741476.9407 -3293657.2537 0.0147 0.0232 0.0163 -0.0466 0.0082 0.0501 0.0002 0.0001 0.0002\n- Walhallow (NT) -4344184.0427 4247715.9745 -1934909.3899 0.0182 0.0186 0.0110 -0.0360 -0.0113 0.0559 0.0002 0.0002 0.0002\n\n\n \n\n \n\n \n\nSchedule 2—Repeals\n\nRecognized-value standard of measurement of position 2012 (No. 1)\n\n1  The whole of the determination\n\nRepeal the determination.\n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"The legislation maintains its original narrow, technical purpose: establishing recognized-value standards for position measurement. The 2017 version updates the specific technical parameters (moving from GDA94 to GDA2020, updating station coordinates and velocities) but does not expand beyond the original scope of defining the Australian Fiducial Network as the national measurement standard."},"complexity_factors":["Highly technical subject matter requiring domain expertise in geodesy and coordinate systems to fully understand","Extensive tabular data in Schedule 1 (109 stations × 12 data columns) making the instrument lengthy despite simple structure","Multiple nested technical definitions (Reference Frame, Reference Ellipsoid, Reference Epoch) that cross-reference international standards (ITRF2014, GRS80)","Mathematical formulas in section 7 for coordinate transformation with validity constraints (±15 years from Reference Epoch)","Requires understanding of 3D Cartesian coordinates (X, Y, Z) and velocity vectors rather than familiar latitude/longitude","Repeal mechanism in Schedule 2 creates interdependency with previous legislative instrument"],"plain_english_summary":"This Determination makes the Australian Fiducial Network (109 precisely surveyed stations) the nation’s legal reference for position, specifying GDA2020, the GRS80 ellipsoid and Reference Epoch 2020.0 as the official measurement framework, and replaces the 2012/GDA94 standard.  \n\nIt affects surveyors, mapping/GPS systems, engineers and scientists by providing legally recognized coordinates, uncertainties and velocities so all users trace positions to the same, time‑aware national standard."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":true,"description":"The instrument replaces the earlier 2012 determination in full (Schedule 2) and establishes an updated set of recognized‑value standards: it fixes a new Reference Epoch (2020.0) and Reference Frame (GDA2020 realised in ITRF2014), publishes updated coordinates, velocities and uncertainties for the AFN (Schedule 1), and prescribes the linear propagation model for computing coordinates at other epochs (sections 4, 6 and 7)."},"complexity_factors":["Technical geodetic content: precise 3‑D Cartesian coordinates, velocity vectors and stated uncertainties for many stations (Schedule 1).","Epoch propagation model: linear time‑dependent coordinate computation with a ±15 year validity window (section 7).","Defined metrological references: Reference Ellipsoid, Reference Epoch and Reference Frame must be used for conversions and interpretation (section 4).","Uncertainty convention: uncertainties are specified as 95% confidence intervals, requiring users to interpret u(X) etc. correctly (section 6(2)).","Regulatory effect: replaces an earlier determination and creates binding recognized‑value standards under the Act (Schedule 2; section 3 authority).","Operational burden on users: data application demands applying velocities to obtain epoch‑adjusted coordinates and using the specified ellipsoid for lat/long/height conversions (sections 6 and 7).","Volume of numeric data: many station entries increases risk of transcription or implementation error (Schedule 1).","Centralised executive decision: instrument made by the Chief Metrologist under s8A(1) of the Act (section 3), concentrating legal determination power."],"plain_english_summary":"This instrument updates Australia’s legal reference for geodetic position by declaring precise 3‑D Cartesian coordinates, velocities and 95% uncertainty bounds for the Australian Fiducial Network at reference epoch 2020.0, and sets a linear model to compute coordinates at other epochs (±15 years). It requires use of the GRS80 reference ellipsoid for conversions. It affects anyone who relies on official reference positions (surveyors, mapping, infrastructure, navigation) who must adopt these values and procedures."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/national-measurement-recognized-value-standard-of-measurement-of-position-determination-2017","history":"/api/acts/national-measurement-recognized-value-standard-of-measurement-of-position-determination-2017/history","analysis":"/api/acts/national-measurement-recognized-value-standard-of-measurement-of-position-determination-2017/analysis","conflicts":"/api/acts/national-measurement-recognized-value-standard-of-measurement-of-position-determination-2017/conflicts","importantCases":"/api/acts/national-measurement-recognized-value-standard-of-measurement-of-position-determination-2017/important-cases","documents":"/api/acts/national-measurement-recognized-value-standard-of-measurement-of-position-determination-2017/documents"}}