About Ephemeris, The Journal
An ephemeris is essentially an astronomical term, but is integral to astrology for making accurate assessments and predictions. An ephemeris helps chart the trajectory and position of the stars and planets. It comes across as a tabulated journal, which gives away the position of natural and artificial objects in the sky at a given point in time. The term ephemeris in Latin means a diary or a journal.
About Ephemeris, The Journal
Since ancient times, the position of the planets have been assigned printed values in a tabular format. These attributes tend to change from time to time with the change in the trajectory of the celestial bodies. As a result, such a tabular compilation would usually last for a day only to be replaced by new values on the following day. Such a diary was, therefore, termed as Ephemeris.
With the advancement in technology, modern ephemerides are calculated electronically with the help of mathematical models based on the movement of celestial bodies via-a-vis that of the Earth. The printed ephemeris, though obsolete, is still in use in some parts of the world where the computers and electronic devices are still not widely used or haven’t been made available to the public at large.
Ephemeris lists the planetary positions using the spherical polar coordinate system, a system used by mathematicians and physicians on a variety of applications to plot the trajectory of a moving body. These coordinates are widely used in preparing maps of stars in the sky, and telescopes. In astronomy, it finds use in determining the movement and the centre of the planets, stars and galaxies.
For instance, the astronomers following astronomical events of solar and lunar eclipses, planets retrograde and terrestrial events impacted by the cosmic alignement of stars and planets are interested in knowing the time of their happening.
Ephemerides are also used to design the celestial navigation software which helps with spacecraft navigation and can work as a backup option for the global positioning system (GPS).
Use in astrology
In astrology, Ephemeris is of great value and use as it helps in determining the outcome of a horoscope based on the current planetary positions, their future trajectory, velocity. This is vital information which allows the astrologers to ascertain the impact of stars and celestial bodies on an individual (ephemeris astrology).
Ephemeris 2019 provides you with the planetary position by date, which in turn helps you with the positional description of planets along with their respective stars, natural satellites and, galaxies. The ephemerides usually provide information about celestial bodies through the centuries, including those that are to happen in the future.
The system is used to track the movement of comets and asteroids that are erratic in behaviour.
However, there are some phenomena that may not be adequately explained by the modern ephemeris due to the disruption caused by loosely researched asteroids.