As of this moment, Jupiter is at 15 degrees of Aries. He has been in Aries since, May 5th, 2011. He will stay in this position until May 17th, 2012.
(The sanskrit names for Jupiter is Guru, and Aries is Mesha.)
15 degrees is the very middle of the sign, and shows the strongest placement for a planet to have an influence on the horoscope.
Aries is a masculine, movable, fire sign, ruled by Mars. Jupiter transiting this position, combines energies of Mars and Jupiter. Mars = energy, and Jupiter = abundance, abundance on all levels from financial to vitality to enjoyment. This combination is a variation of what we could call a Guru Mangala Yoga. It creates enthusiasm, vitality, optimism, and a strong will to succeed and move forward, overcoming obstacles. This can help a person strive to attain leadership roles, or to increase their education. If Jupiter is a friend to your ascendant or moon sign, and is well placed in your natal chart, this is an excellent time to tap into that added burst of life created by this combination and to take your life in a new direction, or build upon your past successes.
This can also be a spiritually uplifting time, and a good time to learn from your teachers or father figures in your life. For women, this is a good time
for your husbands.
If Jupiter is not a friend to your ascendant or moon sign, you may find that you spend your wealth too quickly, before you even get it. There could be negative turn outs to legal proceedings, or someone might be mismanaging your funds. This can also show an intrusion of the father into your daily routine, or you might have to spend more time with father to take care of him. For women, husbands might be costing you a lot right now.
Jupiter is a friend to the signs of Aries, Cancer, Leo, Scorpio, Sagittarius, and Pisces.
Jupiter is not a friend to Taurus, Gemini, Virgo, Libra, Capricorn, and Aquarius.
(Keep in mind, that there are layers upon layers of influences within one’s chart. And usually there is a mixture of good and bad influences. To find out how planets and transits affect you in astrology, you can either pay attention to how your life proceeds as the planets move, or you can have someone interpret your chart.)