The NGS Data Sheet
See file dsdata.pdf for more information about the datasheet.
PROGRAM = datasheet95, VERSION = 8.12.5.19
Starting Datasheet Retrieval...
1 National Geodetic Survey, Retrieval Date = FEBRUARY 18, 2025 06:01:23 EST
DK8251 ***********************************************************************
DK8251 CORS - This is a GPS Continuously Operating Reference Station.
DK8251 DESIGNATION - LOYOLA LS04 CORS ARP
DK8251 CORS_ID - LS04
DK8251 PID - DK8251
DK8251 STATE/COUNTY- VA/ROANOKE
DK8251 COUNTRY - US
DK8251 USGS QUAD - ROANOKE (2019)
DK8251
DK8251 *CURRENT SURVEY CONTROL
DK8251 ______________________________________________________________________
DK8251* NAD 83(2011) POSITION- 37 21 47.13927(N) 079 57 26.96986(W) ADJUSTED
DK8251* NAD 83(2011) ELLIP HT- 325.464 (meters) (01/??/23) ADJUSTED
DK8251* NAD 83(2011) EPOCH - 2010.00
DK8251 ______________________________________________________________________
DK8251 GEOID HEIGHT - -32.407 (meters) GEOID18
DK8251 NAD 83(2011) X - 885,129.005 (meters) COMP
DK8251 NAD 83(2011) Y - -4,998,129.279 (meters) COMP
DK8251 NAD 83(2011) Z - 3,849,695.894 (meters) COMP
DK8251
DK8251 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DK8251 Standards:
DK8251 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DK8251 Horiz Ellip SD_N SD_E SD_h (unitless)
DK8251 -------------------------------------------------------------------
DK8251 NETWORK 0.10 0.20 0.04 0.05 0.10 0.07058200
DK8251 -------------------------------------------------------------------
DK8251
DK8251.The coordinates were established by GPS observations
DK8251.and adjusted by the National Geodetic Survey in January 2023.
DK8251
DK8251.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DK8251.been affixed to the stable North American Tectonic Plate.
DK8251
DK8251.The coordinates are valid at the epoch date displayed above
DK8251.which is a decimal equivalence of Year/Month/Day.
DK8251
DK8251.Due to the release of the International GNSS Service (IGS) 2014
DK8251.realization of the International Terrestrial Reference Frame of 2014
DK8251.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DK8251.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DK8251.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DK8251.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DK8251.currently published epoch of 2010.00.
DK8251
DK8251.Additional information on MYCS2 is available at
DK8251.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DK8251
DK8251.Significant digits in the geoid height do not necessarily reflect accuracy.
DK8251.GEOID18 height accuracy estimate available here.
DK8251
DK8251.The PID for the CORS L1 Phase Center is DR4850.
DK8251
DK8251.Click photographs - Photos may exist for this station.
DK8251
DK8251.The XYZ, and position/ellipsoidal ht. are equivalent.
DK8251
DK8251.The ellipsoidal height was determined by GPS observations
DK8251.and is referenced to NAD 83.
DK8251
DK8251. The following values were computed from the NAD 83(2011) position.
DK8251
DK8251; North East Units Scale Factor Converg.
DK8251;SPC VA S - 1,115,274.085 3,370,897.901 MT 0.99994540 -0 53 04.5
DK8251;SPC VA S - 3,659,028.39 11,059,354.20 sFT 0.99994540 -0 53 04.5
DK8251;UTM 17 - 4,135,662.545 592,316.722 MT 0.99970498 +0 37 57.7
DK8251
DK8251! - Elev Factor x Scale Factor = Combined Factor
DK8251!SPC VA S - 0.99994893 x 0.99994540 = 0.99989433
DK8251!UTM 17 - 0.99994893 x 0.99970498 = 0.99965392
DK8251
DK8251_U.S. NATIONAL GRID SPATIAL ADDRESS: 17SNB9231635662(NAD 83)
DK8251
DK8251 SUPERSEDED SURVEY CONTROL
DK8251
DK8251 NAD 83(2011)- 37 21 47.13918(N) 079 57 26.96989(W) AD(2010.00) c
DK8251 ELLIP H (05/??/20) 325.503 (m) GP(2010.00) c c
DK8251 ELLIP H (06/??/19) 325.464 (m) GP(2010.00) c c
DK8251 NAD 83(2011)- 37 21 47.13927(N) 079 57 26.96981(W) AD(2010.00) c
DK8251 ELLIP H (08/??/11) 325.458 (m) GP(2010.00) c c
DK8251 NAD 83(CORS)- 37 21 47.13970(N) 079 57 26.97038(W) AD(2002.00) c
DK8251 ELLIP H (02/??/09) 325.452 (m) GP(2002.00) c c
DK8251
DK8251.Superseded values are not recommended for survey control.
DK8251
DK8251.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DK8251.See file dsdata.pdf to determine how the superseded data were derived.
DK8251
DK8251_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DK8251
DK8251 STATION DESCRIPTION
DK8251
DK8251'DESCRIBED BY NATIONAL GEODETIC SURVEY 2023
DK8251'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DK8251'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DK8251'ACCESSIBLE AT THE WORLDWIDE WEB.
DK8251'https://geodesy.noaa.gov/CORS/data.shtml
DK8251'https://geodesy.noaa.gov/CORS
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