categories:Astronomy for beginners, Science | tags: Skip to content. Introducing the all-new Astronomy.com Forum! ... The semi-major axis is just a term for half of the longest length of the ellipse.

Chinese astronomers have employed NASA's Transiting Exoplanet Survey Satellite (TESS) to observe an eclipsing binary of the Algol-type, designated V455 Car. Results of the observational campaign are ...

Here is the link to check the semi major axis. It is the black line on the graph. Semi-major axis is the sum of the periapsis and apoapsis distances divided by two. For classic two-body orbits, the ...

More mathematically, if we let D be the diameter of the star and a. be the distance of the planet from the star (called the semi-major axis), the probability for a transit is D/(2a). This assumes ...

Using the Australia Telescope Compact Array (ATCA), astronomers have performed large-scale radio observations of a ...