The planetary system, which is also
known as the solar system or Surya mandala, consists of the Sun and other
planets held by the gravitational power of the Sun and they revolve around
him. The period of revolution differs according to the size, distance and
speed of the planet. The Vedic astrology names the Sun as Ravi
, Mars as Mangal
, Mercury as Budha
Jupiter as Guru
, Venus as Shukra
and Saturn as Shani
Besides these, the ascending and descending nodes of Moon (Rahu &
) are also taken as apratyaksha Grahas or invisible influences.
The word Graha
is specific to Indian Horoscope
and it symbolizes the
heavenly bodies influencing the life on this earth and is not a
classification solar system as Star, Planets, Satellites etc as is done in
modern astronomy. Each Graha is the ruler of 3 group of stars and is called
as the stellar lord. Thus the 9 Grahas rule the 27 constellations.
According to a very ancient astronomical treatise known as the Surya
siddhanta, Saturn is the most distant planet from the Earth. Jupiter, Mars,
Sun, Venus, Mercury and Moon come in serial order of their distances from
Uranus, Neptune and Pluto and other Planets which are found over various
periods are not included in Vedic astrology, by the seers for reasons best
known to them. It cannot be said that they were unaware of their existence.
When they could collect so much of information by Meditation they could also
have collected the influence of Uranus etc. Instead they have mentioned the
name and qualities of 9 upagrahas which add to the information given by the
major Grahas. They took those alone, which influenced the life on this
earth. All planets rotate on their own axis and also revolve around the Sun
The rate of motion of planets has been worked out:
moves @ of roughly 1degree a day or takes 3651/4 days for
one complete revolution.
= 27 days and 7 hours
= 18 months
= Requires same time as the sun but his proximity to the sun
makes him wobbly and he takes 27 days to cover one zodiacal sign.
= 1 year
= has more or less the same velocity as sun
moves for 30 months in a sign or takes 30 years to make one
take 18 months in each sign and complete one
round in the reverse motion in 18 years.