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Glossary of WSA NonSurvey attributes (UKIDSSDR9)
This Glossary alphabetically lists all attributes used in the WSA NonSurvey database(s) held in the WSA. If you would like to have more information about the schema tables please use the Schema Browser (other Browser versions).

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D

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X
Name	Schema Table	Database	Description	Type	Length	Unit	Default Value	Unified Content Descriptor
x	[nspid]Detection	WSA NonSurvey	X coordinate of detection {catalogue TType keyword: X_coordinate} Intensity-weighted isophotal centre-of-gravity in X.	real	4	pixels		POS_PLATE_X
xErr	[nspid]Detection	WSA NonSurvey	Error in X coordinate {catalogue TType keyword: X_coordinate_err} Estimate of centroid error.	real	4	pixels		ERROR
xifitrms	[nspid]AstrometricInfo	WSA NonSurvey	RMS errors in fit for xi	float	8	arcsec	-0.9999995e9	??
xisc	[nspid]AstrometricInfo	WSA NonSurvey	Scale factor in xi	float	8		-0.9999995e9	??
xizp	[nspid]AstrometricInfo	WSA NonSurvey	Zeropoint offset in xi	float	8	arcsec	-0.9999995e9	??
xnfitrms	[nspid]AstrometricInfo	WSA NonSurvey	RMS errors in fit for xn	float	8	arcsec	-0.9999995e9	??
xnsc	[nspid]AstrometricInfo	WSA NonSurvey	Scale factor in xn	float	8		-0.9999995e9	??
xnzp	[nspid]AstrometricInfo	WSA NonSurvey	Zeropoint offset in xn	float	8	arcsec	-0.9999995e9	??
xPixSize	[nspid]CurrentAstrometry, [nspid]PreviousAstrometry	WSA NonSurvey	Angular size of pixels in X	real	4	Arcseconds	-0.9999995e9	POS_ANG_DIST_GENERAL
xSize	[nspid]MultiframeDetector	WSA NonSurvey	Corresponding image size (X); value only available if catalogue file exists {catalogue extension keyword:  NXOUT}	int	4		-99999999	NUMBER
xTalkFlag	[nspid]MultiframeDetector	WSA NonSurvey	Xtalk flag, set if xtalk check has been done. {image extension keyword: XTALK}	varchar	32		NONE