Object points are an approach used in software development effort estimation under some models such as COCOMO II.
[1][2] Object points are a way of estimating effort size, similar to Source Lines Of Code (SLOC) or Function Points.
They are not necessarily related to objects in Object-oriented programming, the objects referred to include screens, reports, and modules of the language.
The number of raw objects and complexity of each are estimated and a weighted total Object-Point count is then computed and used to base estimates of the effort needed.
[3]