Nysian; FIN: 405) is part of the Nysa–Polana complex, the largest cluster of asteroid families in the asteroid belt.
[1]: 23 It is located in the inner region of the asteroid belt, orbiting the Sun between 2.41 and 2.5 AU.
Asteroids in this complex have eccentricities between 0.12 and 0.21 and inclinations of 1.4 to 4.3.
[2] The family derives its name from its most massive member, 44 Nysa.
Asteroids in this complex are typically divided into the stony Nysa and carbonaceous Polana subgroups, two mineralogically different families:[3]