CORONAL HOLE: Spewing a stream of high-speed solar wind, a dark gap in the sun's atmosphere is turning toward Earth. NASA's Solar Dynamics Observatory photographed the coronal hole during the early hours of June 27th:
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HERE'S WHAT'S UP IN SPACE, SUN, EARTH...YOU KNOW...THAT SORT OF STUFF...
COMING ATTRACTION? An active sunspot on the farside of the sun is only days away from showing itself. During the late hours of June 25th, NASA's Solar Dynamics Observatory recorded an explosion which heralds the sunspot's approach:
2012 MY2 Asteroid 30 Jun 2012 East Side Earth Distance 0.0038 AU Sun Distance 1.016 AU
JUNE 24, 20122012 MY2 Asteroid 30 Jun 2012 East Side Earth Distance 0.0038 AU Sun Distance 1.016 AUthe idea girl saysthis one's going to be 1.3 LD from earth, gravitational pull combined with other planetary alignments this month can cause ocean levels to rise…
this one just flew by...Asteroid 2012 MF7 discovered. Flyby Jun 21 at 02:40 UT. Dist: 0.83 LD (0.81 LD from Earth surface). Size: 8-26 m. http://www.minorplanetcenter.net/db_search/show_object?object_id=2012+MF7&commit=Show
JUST FOUND THIS...DON'T KNOW IF I WAS SUPPOSED TO, BUT HERE IS A LIST OF NEAR-EARTH ASTEROIDS THAT ARE RATED BY NASA AS TARGETS FOR EXPLORATION VIA SPACECRAFT RENDEZVOUS...
Near-Earth Asteroid Delta-V for Spacecraft Rendezvous
Delta-V is computed following the approach described by Shoemaker and Helin (1978), Earth-approaching asteroids as targets for exploration, NASA CP-2053, pp. 245-256.Last update: Mon Jun 25 13:31:01 PDT 2012Source for NEA orbits: Minor Planet Centerhttp://www.minorplanetcenter.org/iau/lists/Atens.htmlhttp://www.minorplanetcenter.org/iau/lists/Apollos.htmlhttp://www.minorplanetcenter.org/iau/lists/Amors.htmlCalculations by Lance A. M. BennerJet Propulsion Laboratory, California Institute of Technologyhttp://echo.jpl.nasa.gov/~lance/delta_v/delta_v.rendezvous.htmlN = 8963For comparison, delta-v for transferring from low-Earth orbit to rendezvouswith the Moon and Mars: Moon: 6.0 km/s Mars: 6.3 km/s DELTA-V (ASTEROID)/ PROVISIONAL DELTA-V DELTA-V FOR RANK PERCENTILE ASTEROID NAME DESIGNATION (KM/S) THE MOON MARS H (mag) a (AU) e i (deg)==== ========== ============= =========== ======= ======== ==== ======= ====== = ======= 1 99.99 2006 RH120 3.820 0.637 0.606 29.5 1.033 0.024 0.6 RADAR 2 99.98 2007 UN12 3.823 0.637 0.607 28.7 1.054 0.060 0.2 3 99.97 2010 UE51 3.829 0.638 0.608 28.3 1.055 0.060 0.6 4 99.96 2009 BD 3.870 0.645 0.614 28.1 1.062 0.052 1.3 5 99.94 2010 VQ98 3.924 0.654 0.623 28.2 1.023 0.027 1.5 6 99.93 2008 HU4 3.927 0.654 0.623 28.2 1.093 0.073 1.3 7 99.92 2012 EC 3.953 0.659 0.627 23.4 1.153 0.138 0.9 8 99.91 2008 EA9 3.962 0.660 0.629 27.7 1.059 0.080 0.4 9 99.90 1991 VG 3.998 0.666 0.635 28.5 1.027 0.049 1.4 10 99.89 2008 UA202 4.029 0.672 0.640 29.4 1.033 0.068 0.3THE LIST IS MASSIVE....http://echo.jpl.nasa.gov/~lance/delta_v/delta_v.rendezvous.html
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