apparition
The period during which an object in the Solar System, such as a planet or comet, is visible from Earth. The term is not normally used in connection with the Sun, Moon, or stars.
Related category
- CELESTIAL MECHANICS ...
Apparition: An appearance; in astronomy, the period of observation of a returning periodic comet.
apparition
the period of time during which a particular celestial object can be seen
archeoastronomy ...
Apparition. The period or time when an object is visible and well placed for observation.
Appulse. The apparent close approach of two celestial bodies as seen from Earth, such as a star and a planet, or two planets for example.
Apparition
The period during which a celestial body is visible.
Appleton Layer ...
Let the Apparition Begin
We begin early in the apparition when the apparent diameter of Mars is a tiny 3 or 4 seconds of arc and practice each morning until we have identified all the Martian features we have learned over the years.
Apparition (comics)Apparitions of MelodyApparitions of Melody: The Dead Letters Edition
ApparitorAppArmorAppayya Dikshitar
AppazAPPDAppeal ...
Single-apparition
Parabolic and hyperbolic orbits (not bound).
Periodic comets Those with short orbit durations Nucleus ...
Miracles
Apparitions, Jesus, Mary
Crosses of Light
Crystal Tears
Healing Water and Wells
Hindu Drinking Milk Miracle
UFO Sightings in History
Weeping Statues, Blood, Oil, Water ...
It can also change from apparition to apparition (for periodic comets). absolute manometer (NASA SP-7, 1965) 1.
Over the period 1819-1821 the German mathematician and physicist Johann Franz Encke computed orbits for a series of cometary apparitions observed in 1786, 1795, 1805, and 1818, concluded that they were same comet, ...
In 1705, Edmond Halley applied Newton's method to twenty-three cometary apparitions that had occurred between 1337 and 1698.
long-period comets and one-apparition periodic comets receive only a provisional designation -- there is no equivalent of the Roman numeral designation.
' Spectrum used to mean 'phantom' or 'apparition', but Isaac Newton introduced a new meaning in 1671, when he reported his experiment of decomposing the white sunlight into colors using a prism.
Isolated fireballs and star showers had been occasionally observed, but instead of being attentively watched they had been neglected, for their apparitions had filled mankind with dread, ...
is a Sanskrit term meaning "sight" , vision, apparition, or glimpse. It is most commonly used for "visions of the divine," i.e. of a god or a very holy person or artifact....
(holy view) of the deities as they pass.
One of the more spectacular changes recorded for Halley during an apparition was the detachment event that occurred on April 12, 1986. This 3 minute exposure was taken using the Michigan Schmidt telescope at Cerro Tololo Interamerican Observatory.
Mercury has its best morning sky apparition of the year during April. It will be at its highest during the second part of the month.
Mercury begins its best evening apparition of the year at month-end setting 1 1/2 hour after the sun. Venus stands 25 degrees high in the west and sets near 10:00 p.m.
These apparitions were separated by 75 year intervals so on this basis, Halley predicted that the comet would return in 1758.
4. Try to spot Mercury in morning or evening twilight. (Hint: As seen from the Northern Hemisphere, the best evening apparitions of the planet take place in the spring, and the best morning apparitions take place in the fall.) ...
Low on their horizon, in spring skies, there appeared the apparition of a great ship. This ship sailed ever westward skimming along the southern horizon.
It has been observed at every apparition since its discovery in 1819. Its period is gradually decreasing. Named after J. F. Encke, who computed its orbit. (It was discovered by Pons.) [H76]
Encke's Division ...
The apparent motions of the Sun and planets were superimposed on this sphere, with the Sun's daily and yearly motions, and the moon's monthly apparitions having special importance.
It's possible to see Mercury lurking close to the horizon with the eyes alone, but binoculars help out immeasurably to highlight its waning luster in the ever-brightening twilight. Keep in mind that the apparition disappears as quickly as an early ...
The earlier appearances of Halley's comet have now been identified from records dating from as early as 240 bc, and it is probable that the bright comet observed in 466 bc was also an apparition of this famous comet.
 See also: Sun, Earth, Orbit, Planet, Sky
  
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