Of course, for this method to work, the orbital plane
of an exoplanet must be such that it crosses the star as viewed by Earth.
But they also encircle the Sun because they can orbit at a tilt of more than 15 degrees with respect to the orbital plane
of other asteroids and planets in the Solar System.
The planets in the Kepler-47 system were detected via the "transit method." If the orbital plane
of the planet is aligned edge-on as seen from Earth, the planet can pass in front of the host stars, leading to a measurable decrease in the observed brightness.
To do that, they have to remove the oldest satellites to make sure their orbital plane
The optimization variables, outlined in Table 2, contain seven parameters: the number of orbital planes
, the number of satellites per orbital plane
, phase factor, orbital height, inclination, the equivalent area of satellite downlink antenna, and transmission power of a satellite.
One scenario to investigate is that this spacecraft got a boost to high velocity by the slingshot method shown in the article, which would work well only if the final velocity vector was near the orbital plane
of the planet used.
"By then, the three huge mirrors will divide the 360-degree orbital plane
, continuously illuminating an area for 24 hours," Wu Chunfeng, head of Tian Fu New Area Science Society and the company responsible for the project, told newspaper in an interview.
All 10 satellites for this mission will be deployed to Iridium orbital plane
number 5 where they will go into operation immediately following a thorough testing and validation process.
In addition, the base satellite actively drags the detector under a small, continuous, and constant thrust in an orbital plane
Determining the axial tilt of planets or the angle between the planet's equatorial plane and orbital plane
proves difficult to assess accurately, given the limitations of the observational points of view on Earth.
Maybe it's 9.8 (in [degrees]C per km, the dry adiabatic lapse rate), 23.5 (in degrees, the declination of Earth with respect to the orbital plane
), or 26.5 (in [degrees]C, the sea surface temperature threshold for tropical cyclone formation).