II Geocentric vs. Heliocentric systems: Astrologers are concerned with predictable effects of planets on living/non-living on Earth. Therefore, geocentric astronomical observations are used. Astronomers are concerned with movement of planets with Sun as the center of the Solar System. – Heliocentric system.
III The twelve signs: It is 18o belt extending 9o on either side of Zodiac – apparent pat of Sun. All the planets, 12 signs and 27 nakshatras are located in it.
Sign | Symbol | Signs | Symbol |
Aries | Libra | ||
Taurus | Scorpio | ||
Gemini | Sagittarius | ||
Cancer | Capricorn | ||
Leo | Aquarius | ||
Virgo | Pisces |
Nakshatra | Nakshatra | Nakshatra |
1-Aswini | 10-Magha | 19-Moola |
2-Bharani | 11-Poorva Phalguni | 20-Poorva Ashada |
3-Krittika | 12-Uttra Phalguni | 21-Uttra Ashada |
4-Rohini | 13-Hasta | 22-Shatbhita |
5-Mrig | 14-Chaitra | 23-Dhanistha |
6-Ardra | 15-Swati | 24-Shravan |
7-Punarvasu | 16-Vishakha | 25-P.Bhad. |
8-Pushya | 17-Anuradha | 26-U. Bhadra |
9-Ashlesha | 18-Jyeshtha | 27-Revati |
V Geographical (Terrestrial) Longitudes and Latitudes: Longitudes – are imaginary lines formed by planes passing through the axis of rotation (Meridian) of earth with the earth’s surface. Prime Meridian at 0o pass through Royal Greenwich Observatory near London. 180o E or West – International Date Line. Latitudes are circles cuts by surface of the earth with planes parallel to Equator. They help in locating any point on the surface of the earth.
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