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MCQAdvancedCelestial Coordinates & Time
USAAAO — 2020 First Round
Question 8
Kerbyn is a small rocky planet in a circular orbit around a 0.2 M☉ star with a semimajor axis of 0.1 AU. Kerbyn has an axial tilt of ε = 42° and a sidereal rotation period of 05h59m9.4s. On the vernal equinox, what is the length of the apparent solar day on Kerbyn? The apparent solar day is defined as the interval between successive crossings of the meridian by the Sun.
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