The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  1  1  1  1  1  1
 0  X  0  0  X  X a*X a^3*X  0 2*X a^2*X  X a^2*X a*X a^2*X a^5*X a*X a^6*X a^2*X a^3*X a*X  X a^5*X a*X  X a^2*X  0 a^7*X a^2*X  0 a^3*X a^3*X a^2*X a^3*X  0 2*X a^5*X a^6*X a^6*X a^6*X a*X  0 a^6*X  0  0 a^5*X 2*X a^3*X a^3*X a^5*X a^6*X a^5*X  X a^7*X a^6*X 2*X a^3*X  X 2*X  X a^5*X a^5*X  0 a^7*X  X a^3*X a*X a^3*X a^7*X a^6*X 2*X a^3*X  X a^6*X a*X a^6*X a*X  X a*X a^6*X  0  X a^7*X 2*X  X
 0  0  X  0 a^7*X a^6*X a*X 2*X  X a^6*X a^6*X  X a^3*X  X a^5*X  X a^2*X  0 a^7*X a^7*X a^6*X  0 a^5*X  X a^6*X  0 a^5*X a*X a^6*X a^2*X a^5*X a^7*X a^7*X a^2*X 2*X a^6*X a^5*X a^7*X 2*X a^7*X a^2*X a*X a^2*X a^5*X  X  X a^5*X  0 a*X  X a^6*X a^7*X a^3*X  0  0 a^2*X a^2*X a*X 2*X a^7*X 2*X a^5*X a^3*X a^3*X a^7*X a^5*X  X  0 a^3*X  X a^2*X a^6*X a*X a^2*X a^2*X a*X 2*X a^7*X a*X a^3*X a^2*X a*X a^7*X  X a^3*X
 0  0  0  X a^7*X  X a^5*X a*X a*X a^7*X 2*X a^7*X a^3*X a^2*X 2*X a^3*X a^6*X a^6*X  0 2*X a^7*X 2*X  X a^3*X 2*X a^3*X 2*X a^7*X  X  X  X  0 a*X a*X  X a^3*X a^2*X a^3*X a*X a*X a^5*X a*X a^3*X a^2*X a^6*X a*X  X a^2*X a^2*X a^2*X a^3*X  0 2*X a^2*X  X a^5*X  X a^7*X  0 2*X 2*X 2*X a^3*X a^5*X a*X a^5*X a^7*X  0 a^7*X  0 a^6*X a^6*X a^2*X a*X a^2*X a^2*X 2*X  0 a^7*X 2*X a^7*X a^6*X a^3*X  0  0

generates a code of length 85 over F9[X]/(X^2) who´s minimum homogenous weight is 648.

Homogenous weight enumerator: w(x)=1x^0+752x^648+984x^657+1064x^666+5832x^672+1000x^675+46656x^681+576x^684+624x^693+456x^702+392x^711+328x^720+192x^729+112x^738+48x^747+32x^756

The gray image is a linear code over GF(9) with n=765, k=5 and d=648.
This code was found by Heurico 1.16 in 1.83 seconds.