Main-belt asteroid 6312 Robheinlein (1990 RH4), discovered on September 14, 1990 by H. E. Holt, at Palomar was named after him.
Asteroidul 6312 Robheinlein (1990 RH4) din centura principală, descoperit pe 14 septembrie 1990 de H. E. Holt, a fost numit după el.