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What is the difference between equatorial and ecliptical …
The Ecliptic system is more natural for solar system objects. The galactic system nice for deep space objects. The lack of a single natural plane in the sky means that several different coordinates systems can co-exist. As an example Rigel, at RA 5h14'32'', Dec −08° 12′ 05'' Has a Lat-Long of:-31.11° 76.09° Ecliptic
Coordinates in the Night Sky - Astronomy Stack Exchange
Apr 27, 2021 · The ecliptic is the apparent path of the Sun in the sky over the year—it corresponds to the plane of the Earth’s orbit around the Sun. Coordinates in the ecliptic system are ecliptic longitude, measured eastward from the vernal point mentioned in the previous paragraph, from 0° at it to 180° opposite it to 360° back at it; and the ...
Copernican model for motion of Mars in Solar Ecliptic Coordinate …
Mar 26, 2024 · The ecliptic longitudes reported above by Horizons are with reference to the J2000 ecliptic and equinox, not the "of date" ecliptic and equinox. By the way, the recent vernal equinox was at 2024-Mar-20 3:06:03 UTC, or 3:07:34.466 TT.
the sun - How to convert VSOP's xyz coordinates to heliocentric ...
Jul 23, 2017 · That's of course consistent with the data being labeled as: EMB, Ecliptic Heliocentric Coordinates. If you can live with some small uncertainties due to the details of how coordinate transforms may evolve over time, I believe you can just apply some simple trigonometry. You can confirm here.
Coordinates of equinoxes/solstices for Solar System planets
Aug 4, 2024 · For Earth it's easy - Earth at the vernal equinox lies on the primary direction in the ecliptic coordinate system, which is the system I'm using for my model, and it's the point at which the celestial equator and the ecliptic plane intersect; therefore, we can easily orient the axis of Earth's rotation at 23.45 degrees as seen in the picture below.
Transform asteroid rotation to heliocentric ecliptic coordinates
I'm adding them to a visualization in which the sun is at [0, 0, 0] and the X, Y axes constitute the ecliptic plane of the solar system. Each asteroid model comes with some attributes that define its orientation and spin: λ (ecliptic longitude), β (ecliptic latitude) P (sidereal rotation period) φ0 (initial rotation angle) JD0 (initial date).
observational astronomy - Which coordinate system should one …
May 9, 2023 · $\begingroup$ I suggest using J2000.0 ecliptic coords, since the trajectory is close to the ecliptic, and you can easily get data using J2000 from Horizons. $\endgroup$ – PM 2Ring Commented May 9, 2023 at 18:53
orbit - How to calculate solar ecliptic longitude - Astronomy Stack ...
Mar 29, 2023 · Typically, the solar ecliptic longitude is calculated relative to the centre of the Earth. There is a small difference to the observed longitude at a given location on the Earth's surface due to parallax and atmospheric refraction. Of course, location (or time zone) is needed to convert local time to UTC. $\endgroup$ –
What are the key coordinate systems used in Astronomy, and …
Navigating the solar system, you'd probably track your probe using Earth-based radio telescopes in the equatorial ICRF, though you might describe the overall trajectory in terms of the ecliptic. Navigating at sea, you might measure the Sun's position in horizontal coordinates at a time in GMT to determine your own geographic coordinates.
fundamental astronomy - Converting ecliptical to equatorial …
May 26, 2016 · When looking for a formula to convert polar ecliptic geocentric coordinates of an object to equatorial coordinates I find various sources that give these formulae (like Wikipedia): Declination $δ = \arcsin(\cos ε \times \sin β + \sin ε \times \cos β \times \sin λ)$