(S (S (NP (NP (BASENP (JJ Accurate) (NN calculation)) (PP (IN of) (BASENP (PRPD its) (NN orbit)))) (VP (VBN showed) (BASENP (NN asteroid) (NNP 2008) (NNP QH24)))) (VP (VBZ is) (ADJP (ADJP (DT the) (JJ same)) (PP (IN as) (NP (BASENP (NNP 1997) (NNP RO4)) (CC and) (BASENP (NNP 2007) (NNP FK34))))))) (PERIOD .))