National Geodetic Survey, Retrieval Date = OCTOBER 14, 2020 AI1947 *********************************************************************** AI1947 HT_MOD - This is a Height Modernization Survey Station. AI1947 FBN - This is a Federal Base Network Control Station. AI1947 DESIGNATION - CATALINA 2 RESET 2 AI1947 PID - AI1947 AI1947 STATE/COUNTY- AZ/PIMA AI1947 COUNTRY - US AI1947 USGS QUAD - MOUNT LEMMON (2018) AI1947 AI1947 *CURRENT SURVEY CONTROL AI1947 ______________________________________________________________________ AI1947* NAD 83(2011) POSITION- 32 26 34.66314(N) 110 47 18.52240(W) ADJUSTED AI1947* NAD 83(2011) ELLIP HT- 2764.010 (meters) (06/27/12) ADJUSTED AI1947* NAD 83(2011) EPOCH - 2010.00 AI1947* NAVD 88 ORTHO HEIGHT - 2791.78 (meters) 9159.4 (feet) GPS OBS AI1947 ______________________________________________________________________ AI1947 NAVD 88 orthometric height was determined with geoid model GEOID09 AI1947 GEOID HEIGHT - -27.769 (meters) GEOID09 AI1947 GEOID HEIGHT - -27.678 (meters) GEOID18 AI1947 NAD 83(2011) X - -1,913,084.330 (meters) COMP AI1947 NAD 83(2011) Y - -5,039,282.392 (meters) COMP AI1947 NAD 83(2011) Z - 3,403,469.608 (meters) COMP AI1947 LAPLACE CORR - 8.93 (seconds) DEFLEC18 AI1947 AI1947 Network accuracy estimates per FGDC Geospatial Positioning Accuracy AI1947 Standards: AI1947 FGDC (95% conf, cm) Standard deviation (cm) CorrNE AI1947 Horiz Ellip SD_N SD_E SD_h (unitless) AI1947 ------------------------------------------------------------------- AI1947 NETWORK 0.46 1.14 0.20 0.17 0.58 0.03371860 AI1947 ------------------------------------------------------------------- AI1947 Click here for local accuracies and other accuracy information. AI1947 AI1947 AI1947.The horizontal coordinates were established by GPS observations AI1947.and adjusted by the National Geodetic Survey in June 2012. AI1947 AI1947.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has AI1947.been affixed to the stable North American tectonic plate. See AI1947.NA2011 for more information. AI1947 AI1947.The horizontal coordinates are valid at the epoch date displayed above AI1947.which is a decimal equivalence of Year/Month/Day. AI1947 AI1947.The orthometric height was determined by GPS observations and a AI1947.high-resolution geoid model using precise GPS observation and AI1947.processing techniques. AI1947 AI1947.Significant digits in the geoid height do not necessarily reflect accuracy. AI1947.GEOID18 height accuracy estimate available here. AI1947 AI1947.Click photographs - Photos may exist for this station. AI1947 AI1947.The X, Y, and Z were computed from the position and the ellipsoidal ht. AI1947 AI1947.The Laplace correction was computed from DEFLEC18 derived deflections. AI1947 AI1947.The ellipsoidal height was determined by GPS observations AI1947.and is referenced to NAD 83. AI1947 AI1947. The following values were computed from the NAD 83(2011) position. AI1947 AI1947; North East Units Scale Factor Converg. AI1947;SPC AZ C - 160,542.804 319,442.665 MT 1.00003873 +0 36 19.0 AI1947;SPC AZ C - 526,715.24 1,048,040.24 iFT 1.00003873 +0 36 19.0 AI1947;UTM 12 - 3,589,556.096 519,882.710 MT 0.99960487 +0 06 48.5 AI1947 AI1947! - Elev Factor x Scale Factor = Combined Factor AI1947!SPC AZ C - 0.99956621 x 1.00003873 = 0.99960492 AI1947!UTM 12 - 0.99956621 x 0.99960487 = 0.99917125 AI1947 AI1947_U.S. NATIONAL GRID SPATIAL ADDRESS: 12SWA1988289556(NAD 83) AI1947 AI1947 SUPERSEDED SURVEY CONTROL AI1947 AI1947 NAD 83(2007)- 32 26 34.66257(N) 110 47 18.52277(W) AD(2007.00) 0 AI1947 ELLIP H (02/10/07) 2764.020 (m) GP(2007.00) AI1947 NAD 83(1992)- 32 26 34.66209(N) 110 47 18.52195(W) AD( ) A AI1947 ELLIP H (09/30/99) 2764.042 (m) GP( ) 3 1 AI1947 NAVD 88 (09/30/99) 2791.8 (m) GEOID99 model used GPS OBS AI1947 AI1947.Superseded values are not recommended for survey control. AI1947 AI1947.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. AI1947.See file dsdata.pdf to determine how the superseded data were derived. AI1947 AI1947_MARKER: DD = SURVEY DISK AI1947_SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN AI1947+WITH SETTING: PAVEMENT AI1947_SP_SET: BLOCK AI1947_STAMPING: CATALINA 2 RESET ASA974 LS 11845 1987 AI1947_MARK LOGO: USA AI1947_MAGNETIC: N = NO MAGNETIC MATERIAL AI1947_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO AI1947+STABILITY: SURFACE MOTION AI1947_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR AI1947+SATELLITE: SATELLITE OBSERVATIONS - March 28, 2017 AI1947 AI1947 HISTORY - Date Condition Report By AI1947 HISTORY - 1987 MONUMENTED USA AI1947 HISTORY - 19990111 GOOD NGS AI1947 HISTORY - 20051224 GOOD GEOCAC AI1947 HISTORY - 20170328 GOOD GEOCAC AI1947 AI1947 STATION DESCRIPTION AI1947 AI1947'DESCRIBED BY NATIONAL GEODETIC SURVEY 1999 (CSM) AI1947'THE STATION IS LOCATED IN THE CORONADO NATIONAL FOREST, ON THE HIGHEST AI1947'PEAK OF THE SANTA CATALINA MOUNTAINS AND ON A PEAK LOCALLY KNOWN AS AI1947'MOUNT LEMMON, ON THE GROUNDS OF THE UNIVERSITY OF ARIZONA OBSERVATORY AI1947'SITE 1. TO REACH THE STATION FROM THE JUNCTION OF INTERSTATE HIGHWAY AI1947'10 AND SPEEDWAY BLVD, GO EAST FOR 7.4 MI (11.9 KM) TO WILMOT RD. TURN AI1947'LEFT, NORTH ON WILMOT ROAD FOR 1.6 MI (2.6 KM) TO THE JUNCTION OF AI1947'TANQUE VERDE ROAD. BEAR RIGHT, EAST ON TANQUE VERDE ROAD FOR 3.5 MI AI1947'(5.6 KM) TO THE JUNCTION OF CATALINA HIGHWAY. TURN LEFT, NORTHEAST ON AI1947'CATALINA HIGHWAY FOR 29.5 MILES (47.5 KM) TO SKI VALLEY ROAD. TURN AI1947'RIGHT, NORTH FOR 1.4 MILES (2.3 KM) TO SKI VALLEY AND END OF ROAD AND AI1947'LOCKED GATE. CONTINUE AHEAD THROUGH GATE AND UPHILL FOR 0.3 MILE (0.5 AI1947'KM) TO OPEN GATE. CONTINUE AHEAD 1.4 MILE (2.3 KM) TO OPEN GATE. AI1947'CONTINUE AHEAD 0.15 MI (0.24 KM) TO MAIN GATE TO THE UNIVERSITY OF AI1947'ARIZONA SITE 1 OBSERVATORY. PASS THROUGH GATE, WEST FOR 0.05 MI (0.08 AI1947'KM) TO A FORK. BEAR RIGHT, NORTH, UPHILL FOR 0.1 MI (0.2 KM) TO THE AI1947'END OF THE ROAD AND THE STATION STRAIGHT AHEAD THROUGH GATE. LOCATED AI1947'18.6 M (61.0 FT) NORTHEAST FROM THE NORTHEAST CORNER OF BUILDING AI1947'NUMBER 1401. 12.4 M (40.7 FT) NORTH-NORTHEAST FROM THE GATE POST, 7.5 AI1947'M (24.6 FT) SOUTHEAST OF A GRAY POWER BOX, 5.6 M (18.4 FT) SOUTH OF A AI1947'METAL POLE, 11.1 M (36.4 FT) NORTH OF A SECURITY FENCE, SET IN A 1.1 AI1947'FT (0.3 M) BY 1.5 FT (0.5 M) CONCRETE BLOCK. AI1947 AI1947 STATION RECOVERY (2005) AI1947 AI1947'RECOVERY NOTE BY GEOCACHING 2005 (DEL) AI1947'RECOVERED IN GOOD CONDITION. AI1947 AI1947 STATION RECOVERY (2017) AI1947 AI1947'RECOVERY NOTE BY GEOCACHING 2017 (AK) AI1947'RECOVERED IN GOOD CONDITION.