²Measured position corresponds to RA offset of 0. and Dec. offset of 0.

³All "offsets" are degined in the ("corrected"–"reference") or ("observed"–"calculated") sense. The offsets should be added to reference positions to get the measured positions, which we use to calculate the prediction.

⁴The reference positions for Triton are those given by JPL Horizon's ephemeris (Triton source file: nep081xl ; Earth center source file: nep081xl)

⁵Data from various telescope were reduced with respect to the Gaia DR2 catalog. A model was developed to fit the residuals obtained from our measured positions compared to that of the object's JPL ephemeris. All residuals obtained from the different telescopes were consistent with the model. The model includes the first-order effects of errors in the orbital elements of the object: (i) constant offsets in RA and Dec, (ii) linear (in time) offsets in RA and Dec, and (iii) potential sinusoidal terms with companion's period. The model was propagated to obtain the predicted position and error of the KBO at the time of the occultation. The errors listed for the KBO are 1 standard deviation.

⁶Altitude of each observatory is measured in kilometers above sea level.

⁷"Distance" refers to the closest approach of the "Site" to the center of Triton's shadow in the shadow plane. The errors on all closest approach distances are ±210 km (one standard deviation). "S." means the site is south of the center of Triton's shadow. "N." means the site is north of the center of Triton's shadow.

⁸The errors on all times are ± 0:27. (27 seconds; one standard deviation). The solar altitude is given for locations where it is relevant (solar altitude greater than -18 deg). No entry in the immersion and emersion columns indicates that the occultation is not predicted to be visible at that site.