Table 1 King model fit parameters.

From: A deep investigation of the poorly studied open cluster King 18 using CCD VRI, Gaia DR3 and 2MASS

Name

\(\hbox {f}_o\)

\(\hbox {f}_{{bg}}\)

\(\hbox {r}_c\)

\(\delta _c\)

radius

King 18

21.06 ± 2.20

26.93 ± 0.27

1.05 ± 0.02

1.78

7.90 ± 0.21