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V934 Her = 4U1700+24 is an M giant-neutron star (NS) X-ray symbiotic (SyXB)system. Employing optical and infrared radial velocities spanning 29 yearscombined with the extensive velocities in the literature, we compute thespectroscopic orbit of the M giant in that system. We determine an orbitalperiod of 4391 days or 12.0 yr, the longest for any SyXB, and far longer thanthe 404 day orbit commonly cited for this system in the literature. In additionto the 12.0 yr orbital period we find a shorter period of 420 days, similar tothe one previously found. Instead of orbital motion, we attribute this muchshorter period to long secondary pulsation of the M3 III SRb variable. Our neworbit supports earlier work that concluded that the orbit is seen nearly poleon, which is why X-ray pulsations associated with the NS have not beendetected. We estimate an orbital inclination of 11.3$^\circ$ $\pm$ 0.4$^\circ$.Arguments are made that this low inclination supports a pulsation origin forthe 420 day long secondary period. We also measure CNO and Fe peak abundancesof the M giant and find it to be slightly metal poor compared to the Sun withno trace of the NS forming SN event. Basic properties of the M giant and NS arederived. We discuss the possible evolutionary paths that this system has takento get to its current state.

Infrared Spectroscopy of Symbiotic Stars. XII. The Neutron Star SyXB System 4U 1700+24 = V934 Herculis