Astronomical Basis of Astrology - Dimensions of the Sun, Moon and Planets:
Sun: (Semi- Diameter - kms) - 695, 500
Mass (fraction of mass) 1/ - (--- )
(Density (water=1)) - 1.42
Moon:(Semi- Diameter - kms)1, 738
(Mass (fraction of mass) 1/) - 27, 158, 000
(Density (water=1)) - 3.34
Mercury:(Semi- Diameter - kms)2, 420
(Mass (fraction of mass) 1/) - 9, 000, 000
(Density (water=1)) - 3.73
Venus:(Semi- Diameter - kms)6, 096
(Mass (fraction of mass) 1/) - 403, 490
(Density (water=1)) - 5.21
Earth:(Semi- Diameter - kms) - 6, 378(Eql.)
(Semi- Diameter - kms) - 6, 357 (Polar)
(Mass (fraction of mass) 1/) - 329, 390
(Density (water=1)) - 5.53
(Semi- Diameter - kms) - 6, 357 (Polar)
(Mass (fraction of mass) 1/) - 329, 390
(Density (water=1)) - 5.53
Mars:(Semi- Diameter - kms)3, 392
(Mass (fraction of mass) 1/) - 3, 093, 500
(Density (water=1)) - 3.95
Jupiter: (Semi- Diameter - kms)71, 370 (Eql.0)
(Semi- Diameter - kms)54, 050 (Polar)
(Mass (fraction of mass) 1/) - 1, 047.3
(Density (water=1)) - 1.34
(Semi- Diameter - kms)54, 050 (Polar)
(Mass (fraction of mass) 1/) - 1, 047.3
(Density (water=1)) - 1.34
Saturn: (Semi- Diameter - kms)60, 400 (Eql.)
(Semi- Diameter - kms)54, 050 (Polar)
(Mass (fraction of mass) 1/) - 3, 501.6
(Density (water=1)) - 0.69
(Semi- Diameter - kms)54, 050 (Polar)
(Mass (fraction of mass) 1/) - 3, 501.6
(Density (water=1)) - 0.69
Herschel (Uranus): (Semi- Diameter - kms) - 24, 850
(Mass (fraction of mass) 1/) - 22, 870
(Density (water=1)) - 1.36
(Mass (fraction of mass) 1/) - 22, 870
(Density (water=1)) - 1.36
Neptune: (Semi- Diameter - kms) - 26, 500
(Mass (fraction of mass) 1/) - 19, 314
(Density (water=1)) - 1.33
(Density (water=1)) - 1.33
Planets- Period of rotation, revolution around Sun and distance from Sun: Speed of light is 3,00, 000 km per second. One light year is equal to 9462.9 billion kms. Sun is about 8 light minutes (mean being 149.67 million km= 1 Astronomical Unit- A.U.) away from earth. Nearest star from Sun Alpha Century is 4.2 light years away from Sun.
Planet
Mercury: Period of rotation on its axis 59 days
Period of revolution around Sun - 88 days
Distance from Sun in AU’s 0.387
Distance from Sun in AU’s 0.387
Venus: Period of rotation on its axis 243 days
Period of revolution around Sun - 224.7 days
Period of revolution around Sun - 224.7 days
Distance from Sun in AU’s - 0.723
Earth: Period of rotation on its axis 23.9 hrs.
Period of revolution around Sun - 365.25 day
Distance from Sun in AU’s - 1.000
Period of revolution around Sun - 365.25 day
Distance from Sun in AU’s - 1.000
Mars: Period of rotation on its axis 24.6 hrs.
Period of revolution around Sun - 686.98 days
Distance from Sun in AU’s - 1.524
Distance from Sun in AU’s - 1.524
Jupiter: Period of rotation on its axis 9.9 hrs
Period of revolution around Sun - 11.86 yrs.
Distance from Sun in AU’s - 5.203
Period of revolution around Sun - 11.86 yrs.
Distance from Sun in AU’s - 5.203
Saturn: Period of rotation on its axis 10.2 hrs
Period of revolution around Sun - 29.46 yrs
Distance from Sun in AU’s - 9.519
Distance from Sun in AU’s - 9.519
Herschel (Uranus): Period of rotation on its axis 17.2 hrs
Period of revolution around Sun - 84.02 yrs.
Distance from Sun in AU’s - 19.187
Distance from Sun in AU’s - 19.187
Neptune:Period of rotation on its axis 18.4 hrs
Period of revolution around Sun - 164.77 yrs.
Distance from Sun in AU’s - 30.047
Distance from Sun in AU’s - 30.047
Pluto: Period of rotation on its axis 6.4 days
Period of revolution around Sun - 248.42 yrs.
Distance from Sun in AU’s - 39.672
Period of revolution around Sun - 248.42 yrs.
Distance from Sun in AU’s - 39.672
Geocentric vs. Heliocentric system:
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.- The twelve signs: Zodiac is an 18° belt extending 9° on either side of Ecliptic- apparent path of Sun. All planets, 12 signs and 27 nakshatras are located in it.
IV Twenty- seven Nakshatras:
Nakshatra
1 - Ashwini
10 - Magha
19 - Moola
2 - Bharani
11 - Poorva Phalguni
20 - Poorva Ashada
3- Krittika
12 - Uttra Phalguni
21 - Uttra Phalguni
4 - Rohini
13- Hasta
22- Shravan
5- Mrig
14 - Chitra
23 - Dhanistha
6 - Ardra
15 - Swati
24 - Shatbhisha
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 0° passes through the Royal Greenwich Observatory near London. 180° East or West- International Date Line.
Latitudes- are circles cut by surface of the earth with planes parallel to Equator. They help in location any point the surface of the earth.
Shanker Adawal
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