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In astronomy, a phase curve describes the brightness of a reflecting body as a function of its phase angle (the arc subtended by the observer and the Sun as measured at the body). The brightness usually refers the object's absolute magnitude , which, in turn, is its apparent magnitude at a distance of one astronomical unit from the Earth and Sun.
Phase curve (astronomy) is the brightness of a reflecting body as a function of its phase angle. Phase response curve is the relationship between the timing and the effect of a treatment designed to affect circadian rhythms. Phase diagram is a type of chart used to show conditions at which thermodynamically distinct phases can occur at equilibrium.
Orbital Parameters of a Cosmic Object: . α - RA, right ascension, if the Greek letter does not appear, á letter will appear. δ - Dec, declination, if the Greek letter does not appear, ä letter will appear.
The symbols for aspects first appear in Byzantine codices. [3] Of the symbols for the five Ptolemaic aspects, only the three displayed here — for conjunction, opposition, and quadrature — are used in astronomy. [111] Symbols for a comet (☄) and a star have been used in published
The brightness of an object is a function of the phase angle, which is generally smooth, except for the so-called opposition spike near 0°, which does not affect gas giants or bodies with pronounced atmospheres, and when the object becomes fainter as the angle approaches 180°. This relationship is referred to as the phase curve.
Light curve of the asteroid 201 Penelope based on images taken on 6 October 2006 at Mount John University Observatory. Shows just over one full rotation , which lasts 3.7474 hours. In astronomy , a light curve is a graph of the light intensity of a celestial object or region as a function of time, typically with the magnitude of light received ...
Phase (waves), the angular displacement of a sinusoid from a reference point or time; Phasor angle, angular component of the complex number representation of a sinusoid; Analytic representation phase, instantaneous phase of an analytic signal representation; Phase angle (astronomy), the angle between the incident light and reflected light
Planetary symbols are used in astrology and traditionally in astronomy to represent a classical planet (which includes the Sun and the Moon) or one of the modern planets. The classical symbols were also used in alchemy for the seven metals known to the ancients, which were associated with the planets, and in calendars for the seven days of the week associated with the seven planets.