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We consider in this paper a simple oscillating Quintom model of dark energywhich has two free parameters and an equation of state oscillating and crossing-1. For low redshifts the equation of state of this model resembles itselfsimilar to the linearly parameterized dark energy, however differ substantiallyat large redshifts. We fit our model to the observational data separately fromthe new high redshift supernova observations from the HST/GOODS program andprevious supernova, CMB and galaxy clustering. Our results show that because ofthe oscillating feature of our model the constraints from observations at largeredshifts such as CMB become less stringent.Comment: 4 pages, 6 figures Revtex

CONSTRAINTS ON OSCILLATING QUINTOM FROM SUPERNOVA, MICROWAVE BACKGROUND AND GALAXY CLUSTERING