- RA (D) [deg] SAS task
`evalcorr`

Corrected Right Ascension of the detection in degrees (J2000) after
statistical correlation of the `emldetect` coordinates, RA_UNC and DEC_UNC, with the USNO B1.0 optical
source catalogue using the SAS task `eposcorr`. In case where
the cross-correlation is determined to be unreliable no correction is
applied and this value is therefore the same as RA_UNC (cf. Sec. 3.1.3).

DEC (D) [deg]SAS task
`evalcorr`

Corrected Declination of the detection in degrees (J2000) after
statistical correlation of the `emldetect` coordinates, RA_UNC and DEC_UNC, with the USNO B1.0 optical
source catalogue using the SAS task `eposcorr`. In case where
the cross-correlation is determined to be unreliable no correction is
applied and this value is therefore the same as DEC_UNC (cf. Sec. 3.1.3).

POSERR (E) [arcsec]

Total position uncertainty in arcseconds calculated by combining the
statistical error RADEC_ERR and
the systematic error SYSERR as
follows:

POSERR = SQRT ( RADEC_ERR^{2} + SYSERR^{2} ).
*This column was not given in 2XMMp.*

LII (D) [deg] SAS task
`evalcorr`

Galactic longitude of the detection in degrees corresponding to the
(corrected) coordinates RA and
DEC.

BII (D) [deg] SAS task
`evalcorr`

Galactic latitude of the detection in degrees corresponding to the
(corrected) coordinates RA and
DEC.

RADEC_ERR (E) [arcsec] SAS task `emldetect`

Statistical 1 σ error on the detection position in arcseconds.

SYSERR (E) [arcsec]

The estimated systematic 1 σ error on the detection position in
arcseconds. It is set to be 0."35 if the
SAS task `eposcorr` results in a statistically reliable
cross-correlation with USNO B1.0 optical catalogue. Otherwise
the error is 1."0 (see Sec. 3.2.2 for details).

*This column replaces SYSERRCC used in 2XMMp.*

RA_UNC (D) [deg] SAS
task `emldetect`

Right Ascension of the source in degrees (J2000) as determined by
the SAS task `emldetect` by fitting a detection
simultaneously in all cameras and energy bands.

DEC_UNC (D) [deg] SAS
task `emldetect`

Declination of the source in degrees (J2000) as determined by the
SAS task `emldetect` by fitting a detection simultaneously in
all cameras and energy bands.