tag:blogger.com,1999:blog-6646654265333657479.post609807533215852388..comments2024-01-16T16:19:54.665+05:30Comments on Association of Bangalore Amateur Astronomers: Astro News: Clocking Neptune's SpinRavindra Aradhya, ABAAhttp://www.blogger.com/profile/08370987691727132275noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-6646654265333657479.post-29787726285324586682011-07-12T13:19:40.481+05:302011-07-12T13:19:40.481+05:30Another interesting factoid...probably worth a men...Another interesting factoid...probably worth a mention as a main article...<br /><br />Today, July 12th 2011, Neptune completed it's first revolution around the Sun ever since it was discovered in 1846. It takes 164.79 years for one full revolution...<br /><br />From Wikipedia..<br /><br />The average distance between Neptune and the Sun is 4.50 billion km (about 30.1 AU), and it completes an orbit on average every 164.79 years, subject to a variability of around ±0.1 years.<br /><br />On July 11, 2011, Neptune completed its first full barycentric orbit since its discovery in 1846, although it did not appear at its exact discovery position in our sky because the Earth was in a different location in its 365.25-day orbit. Because of the motion of the Sun in relation to the barycentre of the Solar System, on 11 July Neptune was also not at its exact discovery position in relation to the Sun; if the more common heliocentric coordinate system is used, the discovery longitude was reached on July 12, 2011.Belthurhttps://www.blogger.com/profile/04823590336658152918noreply@blogger.comtag:blogger.com,1999:blog-6646654265333657479.post-63445340231959212492011-07-01T11:25:09.789+05:302011-07-01T11:25:09.789+05:30Very nice information & good reading.Very nice information & good reading.PRAKASH SUBBANNAhttps://www.blogger.com/profile/17172007754950176274noreply@blogger.com