50 GC, 50 PN and 101 Gxy listed by mag and by size
The yellow ones are in both the mag and size list
GC and Gxy data from Dr Steinicke
http://www.klima-luft.de/steinicke/ngcic/ngcic_e.htm
PN data from the
Strasbourg-ESO Catalogue of Galactic Planetary Nebulae