Part | - Astronomy Relevant to Astrology Distance from the Sun: Mean: 45,043 lakhs K.M. Distance from the Earth: Shortest: 43,130 ain KM ‘Diameter: 49,500 KM. Length of year: 165 years Rotation period: 16 hrs. Atmosphere: Hydrogen, helium, methane and acetylene ‘Number of satellites: 8. ‘Distance from the Sun: Mean 59,001 lakh km Distance from the earth: 75,200 lakh km Diameter: 2,300km Length of year: 248 years. Rotation period: 6 earth days. ‘Atmosphere: Methane, Nitrogen and Carbon dioxide Satellites: 1 Fig, 6.9 : Picture of Neptune Fig. 5.10: Picture of Pluto has three fainter rings and consists of particles of axis in about 6 earth days. The Pluto has one dust. known satellite ‘Charon’. 9. PLUTO This is the farthest and ninth planet of solar I. Dwarf Planets ‘The Intemational Astronomical Union (IAU) defines Dwarf planet as a celestial body of the Solar system that fulfis the following four conditions. * It should be in orbit around the Sun + Ithas sufficient mass for its setf-gravity1 category dwar-planet is not a subset of ‘catagory planet, but a separate category atogether: thal is to say, 2 dwarf planet is not @ planet. The TAU in its session of August 2008 Glssfed Pluto as a Dwarf planet. Al present we have three known Owar planets. ') Pluto (Details mentioned earlier) §) Cores Wi) Erie 1) CERES Ht was dlacovered in 1801 in the asteroid belt between the Mars and Jupiter to be considered ‘a5 a Dwarf planet It has a diameter of 950 km. its mags is about 8.710 mig. It revolves in about 9 hrs on its axis, t has uniform brightness that ‘ncicates a faily uniform surfece on i, though powdery in nature. 1 ERIS (Era and te Moon) ‘This is the third Dwart (AU, appear hs a deca eqvatear | wre of Es and ts Moor ig 512. Pech orbit of 1200 km. ft has an orbital period yoors. The surface temperature 's about 30 K Im, Satellites object ering 2 planet and 2s tong 25 the ruts] conte of grovty does not fall Outsiie the rina galego sate, popularly cated moon, Fite planot, I inctudes several bodies much target tn many planets. For example Jupter's wate Ganymede. The, welAnown saiahe ot ar Solar system Moon ering around Earth MOON his the natural satelite of Earth. Que to ts proximity, it seen very bright in the sky. Moon ‘Olates on ts wus in about 27.3 days. ite mean distance trom the Earth is 3,84,402 kms. Moon undergoes phases such as ful Moon to new ‘Moon, which approximately takes 30 days. This erie in india is called as Lunar Month (Lunaton) This is the only one celestial object in the Soler system, where humans have walked iBox 5.7 » Story of Moon MYTHOLOGICAL STORY OF MOON Lord Brahma created Seven Manasa Putras (Sons of mind). Sage Att is one of the Manasa Putras of Lord Brahma. Sage Atri wanted Moon as his son and prayed for a long time. Due to the ‘concentration of Sage Atri, a Moon like creation came out of his eyes. This creation was ‘accepted by Ten (10) Dishas (Directions). These directions nurtured the incomplete child for some time. However, this child fell on the lap of the Earth, Lord Brahma took this child and ‘nurtured on his chariot and directed all the Manasa Putras to strengthen this child. White circling ‘around the Earth, Moon dropped the seeds of medicinal plants and herbs. Hence Moon signifies. all these. Moon signifies in astrology mind, mother, thoughts, reason, etc. Moon was married to twenty-seven (27) daughters of Daksha Prajapaii. These are nothing but twenty-seven (27) constellations of the Zodiac. Moon visits each wife (Constellation) ane day in rotation in a month. Moon showed two immoral actions. The first one was he showed excess love towards Rohini when compared to the other wives. Daksha Prajapati, the father-in-law cursed the son-in-law (Moon) to suffer from Kshaya (1.e. gradual decay). This is the reason Moon gradually wanes and is completely helpless on Amavasya. The diseases like Pluresy, TB, end Chest congestion are the results of weak Moon. Moon abducting Brihaspatl's wife Tara was his second fauit. This happened on Chaturthi of Shuklapaksha, Badrapad month. So one should not see Moon on this tithi. Tara gave birth to Mercury, the celestial princess. Meroury treats Moon as an enemy. The ‘Moon, the significator of mind, if not strong brings fallen state of mind and committing all sorts of misdeeds. Lord Shiva cleaned the Moon and kept pure Moon on his head. As a result Lord Shiva is known as Chandra Sekhar. The negative state of mind ie. shame and humiliation was sufficiently purified by Lord Brahma and strengthened by Sage Atri by immersing in sea and finally put the Moon in the designated place of heavens. Astrologically Moon is important as that of Lagna. The mind is seat of all thinking processes. A pure mind always gives purity of thoughts to the native. reflects the light received from the Sun. Its age change in the orbits of Asteroids due to the is about 4.6 billion years. Its surface gravity is gravitational attraction of Jupiter or other large about 1/6 that of the Earth. planets over a long period, thus leading to the collision of the Asteroids with major planets. ‘Some small fragments of them reach the Earth IV. Asteroids (MINOR PLANETS)diameter and has a long tail. Sometimes these ‘appear like a Comma, Comets are classified into two categories. Periodic Comets- The motion of these ‘Comets can be calculated and their date of, rotation can be predicted. () Halley's Comet- Its mean orbital period is about 76 years around the Sun. (i) Encke's Comet- Its mean orbital period is 3.3 years. (ii) BIELAC comet- Its orbital period is 6.6 years. The motion of some comets is direct and some others are retrogate. Normally all comets travel in elliptical orbits, though some have elongated / eccentric paths. These appear generally in the sky and remain visible for few weeks or months. Finally they disappear into sky. Non Periodic Comets: The orbits of non periodic comets are very big and their Fig. 5.15 : Comet Part | — Astronomy Relevant to Astrology periodicity cannot be calculated. They are normally sighted once in the Solar system. The number of non periodic comets in the solar system is much more than the Periodic Comets.