Questions about orbital periods to ring in the new year!
Lot [answered correctly by Jeno] - Description: What non-transiting exoplanet has the longest year or orbital period around its star, and what does 'non-transiting' in this context mean? Answer correctly through lot offer, sMail, comment, or this topic, and get the entire lot for free!
Jeno's answer: GU Piscium b, with an orbital period lasting approximately 163,000 earth years. Non-transiting means that according to our line of sight from earth, GU Piscium b's "shadow" is not crossing in front of the visible face of its host star.
Lot [answered correctly by dalice] - Description: What transiting exoplanet has the longest orbital period, and what about its place in the habitable zone or planetary classification makes that particularly relevant to the cold of winter? Answer correctly through lot offer, sMail, comment, or this topic, and get the entire lot for free!
Answer: Kepler-421b, an transiting exoplanet which means we can see its 'shadow' as it crosses in front of its star relative to us and is in fact how it was detected, has a year of 704 days. It is both very cold and far out from its star (Kepler-421), within the 'snow line', meaning that it may not have formed by the same method as other exoplanets we've detected, and it may be an ice giant like Neptune or Uranus rather than a gas giant or rocky planet.
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@ Galaxia that was a really fun topic to read (more) about (and a neat giveaway to participate in), thank you! :)