Abstract
Abstract We report on three stellar occultation events by the Kuiper Belt object 2002 MS4, observed using a 300 mm telescope on Anarchist Mountain, BC, Canada. Using the three events we have determined chord diameters of (810 ± 70) km, (630 ± 140) km, and (780 ± 70) km. All of these diameters are consistent with those reported from previous occultation events. Based on these data we estimate that 2002 MS4 is at least 810 ± 70 km in diameter These events also provide high-precision sky positions for 2002 MS4 at the exact time of the occultation, which can be used to refine the orbital ephemeris of this target, improving predictions of future events. All data and processing outputs described in this Research Note can be retrieved from: 10.11570/22.0001
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