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  2. Longitude of the ascending node - Wikipedia

    en.wikipedia.org/.../Longitude_of_the_ascending_node

    In this case, the longitude is also called the right ascension of the ascending node (RAAN). The angle is measured eastwards (or, as seen from the north, counterclockwise) from the FPA to the node. [2] [3] An alternative is the local time of the ascending node (LTAN), based on the local mean time at which the

  3. LTAN - Wikipedia

    en.wikipedia.org/wiki/LTAN

    Local time of the ascending node, an orbital element This page was last edited on 5 August 2021, at 19:32 (UTC). Text is available under the Creative Commons ...

  4. Atrioventricular node - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_node

    The atrioventricular node or AV node electrically connects the heart's atria and ventricles to coordinate beating in the top of the heart; it is part of the electrical conduction system of the heart. [1] The AV node lies at the lower back section of the interatrial septum near the opening of the coronary sinus, and conducts the normal ...

  5. Mean longitude - Wikipedia

    en.wikipedia.org/wiki/Mean_longitude

    An orbiting body's mean longitude is calculated L = Ω + ω + M, where Ω is the longitude of the ascending node, ω is the argument of the pericenter and M is the mean anomaly, the body's angular distance from the pericenter as if it moved with constant speed rather than with the variable speed of an elliptical orbit.

  6. Heart - Wikipedia

    en.wikipedia.org/wiki/Heart

    The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3]

  7. Orbital node - Wikipedia

    en.wikipedia.org/wiki/Orbital_node

    In the case of objects outside the Solar System, the ascending node is the node where the orbiting secondary passes away from the observer, and the descending node is the node where it moves towards the observer. [5], p. 137. The position of the node may be used as one of a set of parameters, called orbital elements, which

  8. Orbital elements - Wikipedia

    en.wikipedia.org/wiki/Orbital_elements

    The longitude of the ascending node, Ω, the inclination, i, and the argument of periapsis, ω, or the longitude of periapsis, ϖ, specify the orientation of the orbit in its plane. Either the longitude at epoch, L 0, the mean anomaly at epoch, M 0, or the time of perihelion passage, T 0, are used to specify a known point in the orbit. The ...

  9. Atrioventricular nodal branch - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_nodal_branch

    The right coronary artery supplies the atrioventricular node in around 90% of people. [1] [2] In approximately 2% of people, the vascular supply to the atrioventricular node arises from both the right coronary artery and the left circumflex branch. [3]