and predictive power [@jt512; @jt587], perhaps surprisingly so, there are other issues with it. The line list was constructed using Jacobi coordinates which do not allow for a full treatment of the symmetry. This led to the use of approximate nuclear spin statistical weights and, more problematically, to the removal of very weak transitions. Most of these transitions are symmetry-forbidden and should have zero dipole intensity. However “forbidden” rotational transitions [@86PaOk.H3+; @jt72] have proved important for both astrophysical [@02GoMcGe.H3+; @05OkGeGo.H3+] and laboratory [@jt306; @jt340] studies. Methods are available which allow for the proper treatment of symmetry [@jt358; @03ScAlHia.H3+]. A new line list [@jtH3+] is nearly complete which extends the range of the NMT line list. The upper energy limit is increased to 25 000 [cm$^{-1}$]{} and the highest rotational quantum number state considered in the calculations is $J=40$. This line list will remove the symmetry problem as well as improve both the accuracy and coverage for H$_3^+$, thus making it useful for both higher and lower temperatures.

H$_2$O
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The BT2 line list [@jt378] has been outstandingly successful: it was used for the original detection of water in an exoplanet atmosphere [@jt400], forms the basis of the well-used BT-Settl brown-dwarf 