Photometric surveys such as Kepler have the precision to identify exoplanet and eclipsing binary candidates from only a single transit .
K2 , with its 75d campaign duration , is ideally suited to detect significant numbers of single-eclipsing objects .
Here we develop a Bayesian transit-fitting tool ( `` Namaste : An Mcmc Analysis of Single Transit Exoplanets '' ) to extract orbital information from single transit events .
We achieve favourable results testing this technique on known Kepler planets , and apply the technique to 7 candidates identified from a targeted search of K2 campaigns 1 , 2 and 3 .
We find EPIC203311200 to host an excellent exoplanet candidate with a period , assuming zero eccentricity , of 540 ^ { +410 } _ { -230 } days and a radius of 0.51 \pm 0.05 R _ { \textrm { Jup } } .
We also find six further transit candidates for which more follow-up is required to determine a planetary origin .
Such a technique could be used in the future with TESS , PLATO and ground-based photometric surveys such as NGTS , potentially allowing the detection of planets in reach of confirmation by Gaia .