For a Moon–North Node conjunction, a common orb is up to 10–12 degrees , though many astrologers prefer a tighter range like 5–8 degrees for a stronger effect.

Why it varies

Some astrologers treat the lunar nodes as having a very wide allowance for conjunctions with the Sun and Moon, while others use a smaller orb because the aspect feels much weaker when it gets too wide.

In practice, the closer the conjunction, the stronger it is.

Practical rule of thumb

  • Loose orb: 10–12 degrees.
  • Typical stronger orb: 5–8 degrees.
  • Very tight / strongest: within a few degrees.

So if you’re reading a chart casually, 10 degrees is a reasonable upper limit; if you want a more exact interpretation, use 5 degrees or less.