(S (S (SBAR (IN Before) (S (NP (NP (BASENP (NNP 2004) (NNP XP14) (POS 's)) (BASENP (JJ exact) (JJ orbital) (NN path))) (PP (IN around) (BASENP (DT the) (NN sun)))) (VP (VBD was) (VP (VBN known) (PP (IN with) (BASENP (JJR more) (NN precision))))))) (COMMA ,) (S (NP (EX there)) (VP (VBD were) (NP (BASENP (NNS concerns)) (SBAR (S (BASENP (PRP it)) (VP (MD would) (VP (VB hit) (BASENP (DT the) (NNP Earth)))))))))) (PERIOD .))