Site Number: 1033
Current Site Name: MCDONALD
Other Site Name: FORT DAVIS
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Geographic Region: NORTH AMERICA
Tectonic Plate: NORTH AMERICAN
Primary Scientific Purposes: MEASUREMENTS SUPPORTING THE DETERMINATION OF PLATE MOTION, PLATE STABILITY, POLAR MOTION/EARTH ROTATION, REGIONAL DEFORMATION, AND INTERCOMPARISON OF MEASUREMENT TECHNIQUES.
Site Description: THE SITE IS LOCATED AT THE MCDONALD OBSERVATORY NEAR FORT DAVIS, TEXAS. THE FACILITY INCLUDES THE FIXED OBSERVATORY WITH A 2.7-METER TELESCOPE AND THE MCDONALD LASER RANGING SYSTEM (MLRS) ON A NEARBY PAD. A NEW PAD FOR THE MLRS AND A GUEST MOBILE LASER PAD HAVE BEEN CONSTRUCTED ON NEARBY MOUNT FLAT TOP AND ARE TIED INTO THE EXISTING MONUMENTATION. A PERMANENT GPS RECEIVER WAS INSTALLED IN 1993.
Site Topo Map: MOUNT LOCKE, TEXAS; CASKAT MOUNTAIN, TEXAS. 7.5 MINUTE QUAD, AVAILABLE THROUGH THE U.S.G.S., RESTON, VA 22092
Geological Province: ROCKY MOUNTAIN PROVINCE
Local Geology: TERTIARY IGNEOUS ROCKS PREDOMINATELY FOUND ON THE SURFACE. THE INFLUENCE OF TOPOGRAPHY ON SOIL FORMATION IS PRONOUNCED. DUE TO EXTENSIVE EROSION, THE SOILS OF HILLS AND MOUNTAINS ARE SHALLOW, WHEREAS THE SOILS OF VALLEYS AND PLAINS ARE DEEP.
Comments: NONE
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Number of Observing Monuments: 8
Surveyed into National Network? YES
Monument Number: 4011
Type of Monument: 0.457 METER DIAMETER STAINLESS STEEL PLATE
Monument Inscription: MCDONALD OBSERVATORY GPS STATION MARK JPL 4011-S 1993
Systems Using Monument: GPS
Latitude: N 30 40' 49.82310"
Longitude: W 104 00' 53.93929"
Elevation: meters
Height Above Ellipsoid: 2003.344 meters
Survey Source/Date: ATSC / 17-MAR-93
Datum/Ellipsoid: NAD-83/GRGS-80
Comments: STAINLESS STEEL PLATE SET FLUSH IN CENTER OF .762 M DIAMETER CONCRETE MONOLITH THAT PROJECTS .5 M ABOVE GROUND.
Differential Coordinates FROM Observing Monument 4011 TO Reference Monuments and Other Observing Monuments
Data Source: ATSC
Mon. Number Monument Inscription X Y Z 7080 7080 1988 -22.3939 -8.4807 -23.4064 7850 7850 1988 -9.5212 1.7953 -1.4841 7851 7851 1988 -10.7976 2.4155 -0.9730
Mon. Number Monument Inscription North East Up
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7080
Type of Monument: STANDARD BRASS DISK
Monument Inscription: 7080 1988
Systems Using Monument: MLRS
Latitude: N 30 40' 48.94384"
Longitude: W 104 0' 54.67839"
Elevation: 2025.960 meters
Height Above Ellipsoid: 2003.128 meters
Survey Source/Date: BFEC / 14-MAR-89
Datum/Ellipsoid: NAD 83/GRS 80
Comments: NONE
Differential Coordinates FROM Observing Monument 7080 TO Reference Monuments and Other Observing Monuments
Data Source: BFEC
Mon. Number Monument Inscription X Y Z 7086 MOBLAS 7086 1979 -104.3287 -124.7845 -330.5613 7206 MCDONALD LURE 107 (1985) -760.2292 -353.8108 -783.1834 7216 NONE (HRAS VLBI REFERENCE POINT) 5810.0090 -3621.3591 -4362.3953 7850 7850 1988 12.8729 10.2774 21.9226 7851 7851 1988 11.5961 10.8970 22.4331 -- 7580 CAL PIER 1 1037.0985 795.4296 1796.1866 -- 7580 CAL PIER 2 83.2383 -5.3304 24.4964 -- 7580 CAL PIER 3 32.3629 -42.4902 -57.3416 -- 7580 CAL PIER 4 -14853.204 768.3452 -3998.7707
Mon. Number Monument Inscription North East Up 7086 MOBLAS 7086 1979 7206 MCDONALD LURE 107 (1985) 7216 NONE (HRAS VLBI REFERENCE POINT) 7850 7850 1988 25.5326 10.0010 -0.0700 7851 7851 1988 26.1207 8.6120 -0.0605 -- 7580 CAL PIER 1 -- 7580 CAL PIER 2 28.7140 82.0516 -0.3879 -- 7580 CAL PIER 3 -66.3517 41.6893 -0.5458 -- 7580 CAL PIER 4
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7086
Type of Monument: STANDARD NASA DISK
Monument Inscription: NONE
Systems Using Monument: MLRS, MOBLAS, AND TLRS-1
Latitude: N 30 40' 37.29121"
Longitude: W 104 00' 57.34505"
Elevation: 1983.150 meters
Height Above Ellipsoid: 1960.324 meters
Survey Source/Date: BFEC / 15-SEP-88
Datum/Ellipsoid: NAD 83/GRS 80
Comments: THIS MONUMENT IS THE SAME AS MONUMENT 7885. THIS IS THE MONUMENT MLRS WAS REFERENCED TO PRIOR TO ITS MOVE.
Differential Coordinates FROM Observing Monument 7086 TO Reference Monuments and Other Observing Monuments
Data Source: BFEC
Mon. Number Monument Inscription X Y Z 7080 CDP STATION 7080 (1988) 104.3287 124.7845 330.5613 7216 NONE (HRAS VLBI REFERENCE POINT) 5914.4188 -3496.5745 -4031.8341 7850 7850 1988 117.2017 135.0619 352.4838 7851 7851 1988 115.9248 135.6816 352.9944 7897 TLRS 7897 -675.3556 -198.0745 -445.9750
Mon. Number Monument Inscription North East Up
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7088
Type of Monument: 3-D
Monument Inscription: NONE (MLRS-TLRS)
Systems Using Monument: MLRS,TLRS
Latitude: 30 40' 48.85093"
Longitude: 104 00' 54.03942"
Elevation: meters
Height Above Ellipsoid: 2003.550 meters
Survey Source/Date: BFEC / 13-DEC-90
Datum/Ellipsoid: NAD-83/GRS-80
Comments: NONE
Differential Coordinates FROM Observing Monument 7088 TO Reference Monuments and Other Observing Monuments
Data Source: BFEC
Mon. Number Monument Inscription X Y Z 7850 7850 (1988) -3.1814 16.1524 24.1508 -- MCDONALD RM4 (1977) -827.5744 -338.8477 -814.8319
Mon. Number Monument Inscription North East Up 7850 7850 (1988) 28.3736 -6.9984 -0.4924 -- MCDONALD RM4 (1977)
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7206
Type of Monument: CENTER OF INTERSECTION OF AXIS ON TELESCOPE (1985)
Monument Inscription: NONE
Systems Using Monument: FIXED OBSERVATORY (2.7-METER LURE TELESCOPE)
Latitude: N 30 40' 18.34286"
Longitude: W 104 01' 19.16064"
Elevation: meters
Height Above Ellipsoid: 2057.185 meters
Survey Source/Date: BFEC / 15-SEP-88
Datum/Ellipsoid: NAD 83/GRS 80
Comments: THIS MONUMENT IS USED FOR LUNAR LASER RANGING ONLY. THIS POSITION IS UPDATED FROM 7206 (1980).
Differential Coordinates FROM Observing Monument 7206 TO Reference Monuments and Other Observing Monuments
Data Source: BFEC
Mon. Number Monument Inscription X Y Z 7080 CDP STATION 7080 (1988) 760.2292 353.8108 783.1834 7086 MOBLAS 1979 655.9005 229.0262 452.6222 7216 NONE (HRAS VLBI REFERENCE POINT) 6570.3192 -3267.5483 -3579.2119 7850 CDP STATION 7850 (1988) 773.1021 364.0881 805.1060 7851 CDP STATION 7851 (1988) 771.8253 364.7078 805.6166 7897 TLRS 7897 -19.4552 30.9517 6.6472 7900 HARVARD RM 5 1977 6553.3478 -3307.4545 -3674.5509
Mon. Number Monument Inscription North East Up 7080 CDP STATION 7080 (1988) 7086 MOBLAS 1979 7216 NONE (HRAS VLBI REFERENCE POINT) 7850 CDP STATION 7850 (1988) 7851 CDP STATION 7851 (1988) 7897 TLRS 7897 18.6312 -26.3750 -18.3830 7900 HARVARD RM 5 1977
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7850
Type of Monument: STANDARD BRASS DISK
Monument Inscription: 7850 1988
Systems Using Monument: TLRS-3, TLRS-4, MOBILE VLBI
Latitude: N 30 40' 49.77268"
Longitude: W 104 0' 54.30278"
Elevation: 2025.890 meters
Height Above Ellipsoid: 2003.057 meters
Survey Source/Date: BFEC / 15-SEP-88
Datum/Ellipsoid: NAD 83/GRS 80
Comments: THIS MONUMENT IS LOCATED ON THE GUEST PAD BUILT NEAR THE NEW LOCATION FOR THE MLRS.
Differential Coordinates FROM Observing Monument 7850 TO Reference Monuments and Other Observing Monuments
Data Source: BFEC
Mon. Number Monument Inscription X Y Z 7080 CDP STATION 7080 (1988) -12.8729 -10.2774 -21.9226 7086 MOBLAS 7086 1979 -117.2017 -135.0619 -352.4838 7206 LURE 107 7206 1985 -773.1021 -364.0881 -805.1060 7851 7851 1988 -1.2769 0.6197 0.5106 7897 TLRS 7897 -792.5573 -333.1364 -798.4588 -- 7850 RM 1 1988 33.8169 -7.0950 2.0334 -- 7850 RM 2 1988 -37.5417 -12.8494 -41.4489 -- 7850 RM 3 1988 -33.3543 24.5147 18.9251 -- REFERENCE POINT ON 7850 NELSON CALI 1024.2255 785.1522 1774.2640 -- REFERENCE POINT ON 7850 NELSON CALI 70.3654 -15.6077 2.5738 -- REFERENCE POINT ON 7850 NELSON CALI 19.4900 -52.7676 -79.2642 -- REFERENCE POINT ON 7850 NELSON CALI -14866.077 758.0678 -4020.6932
Mon. Number Monument Inscription North East Up 7080 CDP STATION 7080 (1988) -25.5326 -10.0008 0.0709 7086 MOBLAS 7086 1979 7206 LURE 107 7206 1985 7851 7851 1988 0.5881 -1.3889 0.0094 7897 TLRS 7897 -- 7850 RM 1 1988 2.4151 34.5285 -0.0855 -- 7850 RM 2 1988 -46.6474 -33.3124 -2.6083 -- 7850 RM 3 1988 24.2907 -38.2983 -3.8522 -- REFERENCE POINT ON 7850 NELSON CALI -- REFERENCE POINT ON 7850 NELSON CALI 3.1819 72.0506 -0.3188 -- REFERENCE POINT ON 7850 NELSON CALI -91.8841 31.6889 -0.4733 -- REFERENCE POINT ON 7850 NELSON CALI
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7851
Type of Monument: STANDARD BRASS DISK
Monument Inscription: 7851 1988
Systems Using Monument: TLRS-1
Latitude: N 30 40' 49.79177"
Longitude: W 104 0' 54.35494"
Elevation: 2025.900 meters
Height Above Ellipsoid: 2003.067 meters
Survey Source/Date: BFEC / 15-SEP-88
Datum/Ellipsoid: NAD 83/GRS 80
Comments: THIS MONUMENT IS LOCATED ON THE GUEST PAD BUILT NEAR THE NEW MLRS SITE.
Differential Coordinates FROM Observing Monument 7851 TO Reference Monuments and Other Observing Monuments
Data Source: BFEC
Mon. Number Monument Inscription X Y Z 7080 CDP STATION 7080 1988 -11.5961 -10.8970 -22.4331 7086 MOBLAS 7086 (1979) -115.9248 -135.6816 -352.9944 7206 LURE 107 7206 (1985) -771.8253 -364.7078 -805.6166 7850 CDP STATION 7850 (1988) 1.2769 -0.6197 -0.5106 7897 TLRS 7897 -791.2804 -333.7561 -798.9694 -- 7850 RM 1 1988 35.0938 -7.7147 1.5229 -- 7850 RM 2 1988 -36.2649 -13.4691 -41.9595 -- 7850 RM 3 1988 -32.0774 23.8950 18.4145 -- REFERENCE POINT ON 7850 NELSON CALI 1025.5024 784.5325 1773.7535 -- REFERENCE POINT ON NELSON CALIBRATI 20.7669 -53.3872 -79.7748 -- REFERENCE POINT ON NELSON CALIBRATI -14864.800 757.4482 -4021.2038 -- REFERENCE POINT ON THE NELSON CALIB 71.6422 -16.2274 2.0632
Mon. Number Monument Inscription North East Up 7080 CDP STATION 7080 1988 -26.1207 -8.6119 0.0615 7086 MOBLAS 7086 (1979) 7206 LURE 107 7206 (1985) 7850 CDP STATION 7850 (1988) -0.5881 1.3889 -0.0094 7897 TLRS 7897 -- 7850 RM 1 1988 1.8270 35.9174 -0.0949 -- 7850 RM 2 1988 -47.2355 -31.9234 -2.6177 -- 7850 RM 3 1988 23.7026 -36.9093 -3.8616 -- REFERENCE POINT ON 7850 NELSON CALI -- REFERENCE POINT ON NELSON CALIBRATI -92.4722 33.0778 -0.4727 -- REFERENCE POINT ON NELSON CALIBRATI -- REFERENCE POINT ON THE NELSON CALIB 2.5938 73.4395 -0.3282
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7885
Type of Monument: STANDARD NASA DISK
Monument Inscription: NONE
Systems Using Monument: MLRS, MOBLAS, AND TLRS-1
Latitude: N 30 40' 37.29121"
Longitude: W 104 00' 57.34505"
Elevation: 1983.150 meters
Height Above Ellipsoid: 1960.324 meters
Survey Source/Date: BFEC / 14-MAR-89
Datum/Ellipsoid: NAD 1983/GRS 80
Comments: THIS MONUMENT IS THE SAME AS MONUMENT 7086.
Differential Coordinates FROM Observing Monument 7885 TO Reference Monuments and Other Observing Monuments
Data Source: BFEC
Mon. Number Monument Inscription X Y Z 7206 NONE (MCDONALD LURE 107 1985) -655.9005 -229.0262 -452.6222 7216 NONE (HRAS VLBI REFERENCE POINT) 5914.4188 -3496.5745 -4031.8341 7897 TLRS 7897 -675.3556 -198.0745 -445.9750
Mon. Number Monument Inscription North East Up
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7897
Type of Monument: NAIL IN PAVEMENT
Monument Inscription: NONE
Systems Using Monument: TLRS-1
Latitude: N 30 40' 18.94766"
Longitude: W 104 01' 20.15114"
Elevation: 2061.630 meters
Height Above Ellipsoid: 2038.802 meters
Survey Source/Date: BFEC / 15-SEP-88
Datum/Ellipsoid: NAD 1983/GRS 80
Comments: THIS LOCATION WAS INITIALLY OCCUPIED BY TLRS-1.
Differential Coordinates FROM Observing Monument 7897 TO Reference Monuments and Other Observing Monuments
Data Source: BFEC
Mon. Number Monument Inscription X Y Z 7080 CDP STATION 7080 1988 779.6844 322.8590 776.5363 7086 MOBLAS 1979 675.3556 198.0745 445.9750 7206 NONE (MCDONALD LURE 107 1985) 19.4552 -30.9517 -6.6472 7216 NONE (HRAS VLBI REFERENCE POINT) 6589.7744 -3298.5000 -3585.8591 7850 CDP STATION 7850 1988 792.5573 333.1364 798.4588 7851 CDP STATION 7851 1988 791.2804 333.7561 798.9694 7900 HARVARD RM 5 1977 6572.8030 -3338.4062 -3681.1981
Mon. Number Monument Inscription North East Up 7080 CDP STATION 7080 1988 7086 MOBLAS 1979 7206 NONE (MCDONALD LURE 107 1985) -18.6312 26.3750 18.3830 7216 NONE (HRAS VLBI REFERENCE POINT) 7850 CDP STATION 7850 1988 7851 CDP STATION 7851 1988 7900 HARVARD RM 5 1977
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Number: 7999
Type of Monument:
Monument Inscription: NONE
Systems Using Monument: TLRS-1
Latitude:
Longitude:
Elevation: meters
Height Above Ellipsoid: meters
Survey Source/Date: /
Datum/Ellipsoid:
Comments: THIS NUMBER WAS ASSIGNED FOR HORIZONTAL RANGING BUT WAS NEVER USED FOR POSITIONING.
Differential Coordinates FROM Observing Monument 7999 TO Reference Monuments and Other Observing Monuments
Data Source:
Mon. Number Monument Inscription X Y Z
Mon. Number Monument Inscription North East Up
Site Number: 1033
Current Site Name: MCDONALD
Location: MCDONALD OBSERVATORY, FORT DAVIS, TX
Monument Occupying Occupation Starting Ending Number System Designator Date Date 7080 MLRS 70802401 10-FEB-88 02-JUN-88 7080 MLRS 70802402 03-JUN-88 21-SEP-88 7080 MLRS 70802403 22-SEP-88 12-SEP-89 7080 MLRS 70802404 13-SEP-89 27-SEP-89 7080 MLRS 70802405 28-SEP-89 24-OCT-89 7080 MLRS 70802406 05-NOV-89 15-JAN-90 7080 MLRS 70802407 16-JAN-90 25-JAN-90 7080 MLRS 70802408 26-JAN-90 03-APR-90 7080 MLRS 70802409 04-APR-90 29-APR-90 7080 MLRS 70802410 30-APR-90 05-JUN-90 7080 MLRS 70802411 06-JUN-90 24-SEP-90 7080 MLRS 70802412 25-SEP-90 30-NOV-90 7080 MLRS 70802413 01-DEC-90 09-APR-91 7080 MLRS 70802414 10-APR-91 03-JUL-91 7080 MLRS 70802415 04-JUL-91 09-APR-92 7080 MLRS 70802416 10-APR-92 12-AUG-92 7080 MLRS 70802417 13-AUG-92 28-JAN-93 7080 MLRS 70802418 29-JAN-93 10-JUN-93 7080 MLRS 70802419 11-JUN-93 31-DEC-99 7086 MOBLAS-1 70860101 27-AUG-79 31-MAY-80 7086 TLRS-1 70861102 01-JUL-80 08-AUG-80 7086 MLRS 70862403 11-OCT-82 28-FEB-85 7086 MLRS 70862404 01-MAR-85 16-OCT-86 7086 MLRS 70862405 17-OCT-86 29-JUL-87 7086 MLRS 70862406 30-JUL-87 16-SEP-87 7086 MLRS 70862407 17-SEP-87 23-NOV-87 7086 MLRS 70862408 24-NOV-87 01-FEB-88 7206 2.7 METER 72062601 01-MAY-76 29-JUN-85 7850 TLRS-4 78501401 23-JAN-93 01-MAY-93 7885 TLRS-1 78851101 23-JUL-82 10-OCT-82 7897 TLRS-1 78971101 01-SEP-79 31-DEC-79 7897 TLRS-1 78971102 01-JAN-80 13-FEB-80 7999 TLRS-1 79991101 09-AUG-80 11-AUG-80
Monument Occupying Occupation Starting Ending Number System Designator Date Date 7850 MV-3 78505301 05-OCT-88 08-OCT-88