... October 19, 1996 . Lalande 21185: The Nearest Planetary System? ... Explanation: What's the closest extrasolar planetary system ? It may well be planets of the dim red dwarf star cataloged as Lalande 21185 -- a mere 8 light years distant. ... Our own planetary system would be detectable by such a technique .. ... Nevertheless, the existence of a planetary system so near our own suggests the intriguing possibility that planets are common in our galaxy. ... About APOD | ...

... It may well be planets of the dim red dwarf star cataloged as Lalande 21185 -- a mere 8 light years distant. ... Using data obtained from frequent observations of this star over the last 50 years, University of Pitsburgh astronomer George Gatewood recently announced that much of Lalande 21185's wobble is most likely due to an unseen planet with approximately 90% of the mass of Jupiter and an orbital period of 5.8 years. ... NASA Web Site Statements, Warnings, and Disclaimers . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Solar System . ... Space Flight . ... Posted on February 24, 2012 | 7 Comments Sir Frederick William Herschel is one of the most well-known and highly regarded historical astronomers but many may not know or realise there was more to his genius than his [ ] . Continue Reading.. ... 3 Comments What exciting space events has 2012 in store for us? ... 2 Comments Dwarf planet Haumea is one of the most bizarre small bodies of the outer Solar System. ...

Astronomers are proposing that there are now twelve planets in our solar system. ... In particular, the fact that the object designated 2003 UB313 is larger than Pluto dictates either that there are more than nine planets or that Pluto should not count as a planet at all. ... Soon after, in August that year, images of the new "planet" were obtained with the Faulkes Telescope in Hawaii, controlled remotely from Armagh by Observatory summer student Elizabeth Connolly. ...

... Astronomers have found a planet the size of Earth just outside of our Solar System, orbiting around our nearest star! ... More than 800 planets have now been found outside our Solar System, we call them 'exo-planets . ... While the newly discovered exo-planet is similar to the Earth in size, it is much closer to its star than our planet. ... A year on the exo-planet would be just three days long (this is how long it takes the planet to complete one orbit of its star). ...

3) Planets and Brown Dwarfs . ... By its nature, this method is most sensitive to massive planets orbiting close to their stars. ... That means that some of the more massive extrasolar planets could actually be brown dwarfs (although the statistics of the finds suggest that most of them are not). ... Another possible difference between brown dwarfs and massive planets is how they are born. ... They would base the fundamental definition on the mode of formation: a planet is built from planetesimals. ...

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... Asteroid Introduction (This Page) . ... Asteroid Summary . Asteroids . Gaspra , Ida & Dactyl , Toutatis , Castalia , Vesta , Geographos, Mathilde . ... NEAR Spacecraft Homepage . Near-Earth Asteroid 3753 - Earth's Curious Companion . ... Then on October 1991 asteroid 951 Gaspra was visited by the Galileo spacecraft and became the first asteroid to have hi-resolution images taken of it. ... Both Gaspra and Ida are classified as S-type asteroids composed of metal-rich silicates. ... Gaspra . ...

Thanks to numerous ground and space-based surveys, we are now aware of over 1800 planets orbiting other stars, with another nearly 5000 candidates from the Kepler Mission awaiting confirmation. ... The answer to this question lies in the study of young planets and their formation environments. In this talk I will show how high-precision time series data from space telescopes is beginning to illuminate the conditions surrounding planet formation and the star-disk connection. ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . This project was established in mid-1998 to help coordinate, and provide a focal point for, the study of those comets and asteroids that can approach the Earth's orbit. ... Web Site . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... 8, ``Celestial Mechanics'', 2002 Regularity and chaos for planetary orbits in binaries D. Benest Observatoire de Nice, Nice, France 1. ... Previous papers showed that stable planetary orbits, around either the lightest or the heaviest component of several nearby binary systems, exist up to distances from their primary of the order of more than half the binary's periastron sep­ aration. ... Chaos: bounded or sticky? It is now well­known that planetary dynamics may include some proportion of chaos. ...

... For a timeline of the exploration of the magnetic environment of the Earth, Sun and Planets, see here . ... Galileo Galilei (1564-1642) builds the first astronomical telescope and observes for the first time craters on the Moon, satellites around Jupiter, and the way Venus goes through phases like the Moon (crescent, etc.) ... 17 December--First successful flight by the Wright brothers at Kitty Hawk, North Carolina. ... 16 March--Goddard launches his first liquid-fuel rocket. ...

... Below is a near-final schedule for the meeting "Planets Beyond the Solar System and the Next Generation of Space Missions," to be held at STScI in Baltimore on October 16, 17, and 18, 1996. ... New programs for the detection and study of planets (interferometry, photometry, microlensing) . ... Spinoffs and benefits of planet detection programs and contributions of these programs to understanding planet formation and evolution (astrophysics using small-field interferometry, NGST) . ... K. Noll, STScI...

... Master . ... Zel'dovich asteroid . ... August 29, 2013: Asteroid (11438) Zeldovich discovered 40 years ago . ... Asteroid (11438) has quite an elongated orbit with a period of 3.25 yr and eccentricity 0.19 (twice that of Mars). ... Asteroid will be located in Cancer constellation at the distance of 1.63 AU from Earth and 2.62 AU from the Sun (near the aphelion of its orbit), with the magnitude being 17.0m. Telescopes of MASTER network will definitely observe asteroid (11438) Zeldovich in early 2014....

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... An artificial comet holds secrets to Earths life . ... Comet to make close flyby of Red Planet in October 2014 . ... COMETS | ... Comet C/2013 A1 (Siding Spring) will make a close approach to Mars in October 2014. ... During the close Mars approach, the comet likely will achieve a total visual magnitude of 0 or brighter, as seen from Mars-based assets. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Parkes | ... VLBI . ... Friday, 25 August 2006 . ... First LBA eVLBI fringes Chris.Phillips_at_email.protected . ... v190c fringes Chris.Phillips_at_email.protected . ... Re: v190c - Parkes update Chris.Phillips_at_email.protected . ... RE: Dates for LBA sessions in the October 2006 semester Chris.Phillips_at_email.protected . ... Re: Dates for LBA sessions in the October 2006 semester Jim.Lovell_at_email.protected . ...

... Future seminars . P a s t seminars . Seminar council . Extrarasolar planetary systems: regularities are found out " . Leonid Ksanfomaliti (IKI) . ... The discovery in 1995 of the first extrasolar giant planet (51 Peg b) initiated the physics of extrasolar planetary systems. ... Metallicity has become an indicator of the possible presence of planetary systems and, probably, even determines the type of planets. ...

... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

OBSERVATIONS OF COORBITAL SATELLITES OF SATURN Emel'yanov N., Varfolomeev M. Sternberg State Astronomical Institute, Moscow, e-mail : emelia@sai.msu.ru Institut de MИcanique CИleste et de Calcul des иphИmИrides, Paris, e-mail : emelia@imcce.fr Abstract. To improve the orbital parameters and masses of coorbital satellites of Saturn, Janus and Epimetheus, new observations of these satellites are necessary. ... IN: Saturn. ... New observations of Saturn's coorbital satellites" - Icarus. ...

delay-doppler image of the Maxwell Montes region of Venus, taken using the S-Band (2380 MHz or 12.6 cm) radar transmitter and the 305m dish at the Arecibo Observatory in Arecibo, Puerto Rico in June of 1988. The horizontal resolution is about 2 km. ... This delay-doppler radar image shows craters near the North pole of Mercury. The resolution of this image is about 15 km. ...