18 relations: Apparent magnitude, Astronomy, Celestial mechanics, Cube (algebra), Distance, Isaac Newton, Johannes Kepler, Kepler's laws of planetary motion, Mass, Mass–luminosity relation, Orbit, Orbital period, Parallax, Photometric parallax method, Semi-major and semi-minor axes, Spectroscopic parallax, Square (algebra), Visual binary.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
Celestial mechanics is the branch of astronomy that deals with the motions of celestial objects.
In arithmetic and algebra, the cube of a number is its third power: the result of the number multiplied by itself twice: It is also the number multiplied by its square: This is also the volume formula for a geometric cube with sides of length, giving rise to the name.
Distance is a numerical measurement of how far apart objects are.
Sir Isaac Newton (25 December 1642 – 20 March 1726/27) was an English mathematician, astronomer, theologian, author and physicist (described in his own day as a "natural philosopher") who is widely recognised as one of the most influential scientists of all time, and a key figure in the scientific revolution.
Johannes Kepler (December 27, 1571 – November 15, 1630) was a German mathematician, astronomer, and astrologer.
In astronomy, Kepler's laws of planetary motion are three scientific laws describing the motion of planets around the Sun.
Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied.
In astrophysics, the mass–luminosity relation is an equation giving the relationship between a star's mass and its luminosity, first noted by Jakob Karl Ernst Halm.
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
The orbital period is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun, moons orbiting planets, exoplanets orbiting other stars, or binary stars.
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
The photometric parallax method is a method of data analysis used in astronomy that uses the colours and apparent brightnesses of stars to infer their distances.
In geometry, the major axis of an ellipse is its longest diameter: a line segment that runs through the center and both foci, with ends at the widest points of the perimeter.
Spectroscopic parallax is an astronomical method for measuring the distances to stars.
In mathematics, a square is the result of multiplying a number by itself.
A visual binary is a gravitationally bound system that can be resolved into two stars.