How compact is compact? Or what is minimum radius? I don't have these smaller radius curves but SCARM shows you can make one with your turnouts and Y using these;
two R 249-15 (Kato 20101)
two R249-45 (Kato 20100)
four S64 (Kato 20030)
one S124 (Kato 20020).
Size of the wye is about 13" x 26" using those ~9 3/4" curves.
Oh and have a banana for Dee.