code: def tdb_jd(self, jd):
          
          tdb = _to_array(jd)
          tt = tdb - tdb_minus_tt(tdb) / DAY_S
          t = Time(self, tt)
          t.tdb = tdb
          return t
docs: Build a `Time` from a TDB Julian date.
  
          Supply the Barycentric Dynamical Time (TDB) as a Julian date:
  
          >>> t = ts.tdb_jd(2456675.56640625)
          >>> t.tdb
          2456675.56640625