From this value and the eccentricity e of Earth’s orbit (0.017), we can calculate the semiminor axis of Earth’s orbit by rearranging the equation to calculate eccentricity: into.

This new planet, however, has an almost unheard of orbital eccentricity of 0.94. To put it in terms of our solar system, NOIRLab explains that if this planet orbited the sun then it would come 10 ...

How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here ...

Oumuamua had an eccentricity of 1.20, and initial estimates were somewhat lower, leading to some claims we’d just mismeasured ...

A11pl3Z's eccentricity is now estimated to be near 6.0, the highest seen yet, confirming its hyperbolic orbit.

We have discovered two interstellar objects so far, ’Oumuamua and Comet 2I/Borisov. ’Oumuamua had no dust tail and a significant nongravitational acceleration, which led to a wide variety of ...

"Astronomers may have just discovered the third interstellar object passing through the Solar System!" the agency's ...