(Laughter) And this is essentially what that clustering in argument of perihelion was telling us.
(笑声) 这基本上就是近日点参数的聚集告诉我们的。
TED演讲(视频版) 2019年11月合集
These objects really did all share a common value of argument of perihelion, and they shouldn't.
这些天体确实都具有共同的近日点角角值,但它们不应该如此。
TED演讲(视频版) 2019年11月合集
When they realized it was clustered in argument of perihelion, they immediately jumped up and down, saying it must be caused by a distant, giant planet out there, which is really exciting, except it makes no sense at all.
The argument of periapsis (also called argument of perifocus or argument of pericenter), symbolized as ω, is one of the orbital elements of an orbiting body. Parametrically, ω is the angle from the body's ascending node to its periapsis, measured in the direction of motion.