255 Subfield $e - Statement of equinox:

Subfield $e contains the statement of equinox or epoch.

In records formulated according to ISBD principles, subfield $e data, along with any subfield $c or $d data, are enclosed in parentheses.

Examples:

255 ##$aScale not given$d(RA 0 hr. to 24 hr./Decl. +90° to -90° ;$eeq. 1980).

255 ##$aScales vary$e(Eq. 1986.00).