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 19, 2025 03:49:29 EST
AF9635 ***********************************************************************
AF9635 HT_MOD - This is a Height Modernization Survey Station.
AF9635 CORS - This is a GPS Continuously Operating Reference Station.
AF9635 DESIGNATION - RICHMOND 1 CORS ARP
AF9635 CORS_ID - RIC1
AF9635 PID - AF9635
AF9635 STATE/COUNTY- VA/C OF RICHMOND
AF9635 COUNTRY - US
AF9635 USGS QUAD - RICHMOND (2019)
AF9635
AF9635 *CURRENT SURVEY CONTROL
AF9635 ______________________________________________________________________
AF9635* NAD 83(2011) POSITION- 37 32 16.42914(N) 077 25 46.77500(W) ADJUSTED
AF9635* NAD 83(2011) ELLIP HT- 56.844 (meters) (06/??/19) ADJUSTED
AF9635* NAD 83(2011) EPOCH - 2010.00
AF9635* NAVD 88 ORTHO HEIGHT - 89.92 (meters) 295.0 (feet) GPS OBS
AF9635 ______________________________________________________________________
AF9635 NAVD 88 orthometric height was determined with an earlier geoid model
AF9635 GEOID HEIGHT - -33.076 (meters) GEOID18
AF9635 NAD 83(2011) X - 1,102,094.602 (meters) COMP
AF9635 NAD 83(2011) Y - -4,942,504.565 (meters) COMP
AF9635 NAD 83(2011) Z - 3,864,934.800 (meters) COMP
AF9635
AF9635 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AF9635 Standards:
AF9635 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AF9635 Horiz Ellip SD_N SD_E SD_h (unitless)
AF9635 -------------------------------------------------------------------
AF9635 NETWORK 0.11 0.33 0.05 0.04 0.17 0.00698000
AF9635 -------------------------------------------------------------------
AF9635
AF9635.The coordinates were established by GPS observations
AF9635.and adjusted by the National Geodetic Survey in June 2019.
AF9635
AF9635.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AF9635.been affixed to the stable North American Tectonic Plate.
AF9635
AF9635.The coordinates are valid at the epoch date displayed above
AF9635.which is a decimal equivalence of Year/Month/Day.
AF9635
AF9635.Due to the release of the International GNSS Service (IGS) 2014
AF9635.realization of the International Terrestrial Reference Frame of 2014
AF9635.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AF9635.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AF9635.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AF9635.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AF9635.currently published epoch of 2010.00.
AF9635
AF9635.Additional information on MYCS2 is available at
AF9635.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AF9635
AF9635.The orthometric height was determined by GPS observations and a
AF9635.high-resolution geoid model using precise GPS observation and
AF9635.processing techniques.
AF9635
AF9635.Significant digits in the geoid height do not necessarily reflect accuracy.
AF9635.GEOID18 height accuracy estimate available here.
AF9635
AF9635.The PID for the CORS L1 Phase Center is AJ7927.
AF9635
AF9635.Click photographs - Photos may exist for this station.
AF9635
AF9635.The XYZ, and position/ellipsoidal ht. are equivalent.
AF9635
AF9635.The ellipsoidal height was determined by GPS observations
AF9635.and is referenced to NAD 83.
AF9635
AF9635. The following values were computed from the NAD 83(2011) position.
AF9635
AF9635; North East Units Scale Factor Converg.
AF9635;SPC VA S - 1,134,213.345 3,594,590.687 MT 0.99994981 +0 38 58.6
AF9635;SPC VA S - 3,721,164.95 11,793,252.95 sFT 0.99994981 +0 38 58.6
AF9635;UTM 18 - 4,157,319.868 285,334.053 MT 1.00016765 -1 28 51.3
AF9635
AF9635! - Elev Factor x Scale Factor = Combined Factor
AF9635!SPC VA S - 0.99999108 x 0.99994981 = 0.99994089
AF9635!UTM 18 - 0.99999108 x 1.00016765 = 1.00015873
AF9635
AF9635_U.S. NATIONAL GRID SPATIAL ADDRESS: 18STG8533457319(NAD 83)
AF9635
AF9635 SUPERSEDED SURVEY CONTROL
AF9635
AF9635 ELLIP H (06/27/12) 56.849 (m) GP(2010.00) 0 0
AF9635 NAD 83(2011)- 37 32 16.42914(N) 077 25 46.77498(W) AD(2010.00) c
AF9635 NAD 83(2011)- 37 32 16.42913(N) 077 25 46.77490(W) AD(2010.00) c
AF9635 ELLIP H (08/??/11) 56.848 (m) GP(2010.00) c c
AF9635 ELLIP H (02/10/07) 56.867 (m) GP(2002.00)
AF9635 NAD 83(2007)- 37 32 16.42936(N) 077 25 46.77568(W) AD(2002.00) c
AF9635 NAD 83(CORS)- 37 32 16.42936(N) 077 25 46.77568(W) AD(2002.00) c
AF9635 ELLIP H (03/??/02) 56.867 (m) GP(2002.00) c c
AF9635 NAD 83(CORS)- 37 32 16.42931(N) 077 25 46.77602(W) AD(1997.00) c
AF9635 ELLIP H (07/??/00) 56.869 (m) GP(1997.00) c c
AF9635 NAD 83(CORS)- 37 32 16.42942(N) 077 25 46.77618(W) AD(1997.00) c
AF9635 NAD 83(CORS)- 37 32 16.42942(N) 077 25 46.77618(W) AD(1997.00) c
AF9635 ELLIP H (11/??/99) 56.746 (m) GP(1997.00) c c
AF9635 ELLIP H (11/??/99) 56.746 (m) GP(1997.00) c c
AF9635 NAD 83(CORS)- 37 32 16.42948(N) 077 25 46.77604(W) AD(1997.00) c
AF9635 ELLIP H (05/??/97) 56.766 (m) GP(1997.00) c c
AF9635 NAD 83(CORS)- 37 32 16.42948(N) 077 25 46.77604(W) AD(1996.00) c
AF9635 ELLIP H (05/??/97) 56.766 (m) GP(1996.00) c c
AF9635
AF9635.Superseded values are not recommended for survey control.
AF9635
AF9635.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AF9635.See file dsdata.pdf to determine how the superseded data were derived.
AF9635
AF9635_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AF9635
AF9635 STATION DESCRIPTION
AF9635
AF9635'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
AF9635'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AF9635'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AF9635'ACCESSIBLE AT THE WORLDWIDE WEB.
AF9635'https://geodesy.noaa.gov/CORS/data.shtml
AF9635'https://geodesy.noaa.gov/CORS
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