Talk:HD 3167

Inclinations of planets

The October 2021 Astronomy & Astrophysics paper says that planet b orbits around the star's equator, and therefore has an inclination of ~0°, while planets c and d orbit around the star's poles, and therefore have inclinations of ~90°. However, the table with the information on the planets says that b and c have inclinations of ~90°, while the inclination of d is unknown, but is around the same as b and c. What is the cause of this inconsistency? --Numberguy6 (talk) 05:08, 20 November 2021 (UTC)[reply]

@Numberguy6: I believe the orbital inclinations are with respect to the direction of the Earth; they can still be oriented at right angles to each other. That orientation would be determined by the longitude of the ascending node (Ω). Hence, it isn't contradictory in this case. Praemonitus (talk) 11:27, 20 November 2021 (UTC)[reply]

Right Angle Planetary Orbits

Can someone knowledgeable update the wikipedia article with this NYTimes article, which says HD 3167 is the first known in which some of its planets do not orbit on a plane, but indeed perpendicular to each other. From the science article, it says "we can conclude that the two planets are on perpendicular orbits. This could be explained by HD 3167b being strongly coupled to the star and retaining its primordial alignment, whereas HD 3167c would have been brought to a nearly polar orbit via secular gravitational interactions with an outer companion."

https://www.nytimes.com/2021/11/06/science/perpendicular-planets-star-system.html

https://www.aanda.org/articles/aa/full_html/2021/10/aa41527-21/aa41527-21.html

Thank you... Haxwell (talk) 02:50, 4 October 2023 (UTC)[reply]