Sunday, July 28, 2013

Nearly half a kilometer wide asteroid will miss Earth on August 9

Asteroid 2005 WK4 will make a close approach to Earth on August 9, 2013. The space rock will miss our planet at the distance of 8.1 LD (Lunar Distances). 2005 WK4 was discovered on November 27, 2005 by the Siding Spring Survey. Its absolute magnitude of 20.1 suggests a diameter within a factor of two of 0.3 km. NASA is planning radar observations of the asteroid over about a week at Goldstone Deep Space Communications Complex and on four days at Arecibo Observatory. Observations are scheduled between Aug. 3-12 at Goldstone and on August 7 - 10 at Arecibo.

2005 WK4 will be too close to the Sun for optical observations until early August, so NASA doesn't expect any new information on its physical properties to become available until right about the time that the radar observations start.

2005 WK4 has been classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center, although there's no danger over the entire interval that the orbit can be computed.

A potentially hazardous object (PHO) is an asteroid (PHA) or comet (PHC) with an orbit such that it has the potential to make close approaches to the Earth and a size large enough to cause significant regional damage in the event of impact. These objects are monitored by NASA with contributions from others including amateurs. The reason they can become hazardous is that their trajectory can variate due to gravitional fields from Planets or Stars (ore other objects). Overall the chance of a potentially hazardous event due to these objects is about once in 10,000 years.


  1. I enjoyed over read your blog post. Your blog have nice information, I got good ideas from this amazing blog. I am always searching like this type blog post. I hope I will see again..jogos friv online
    Jogos live
    jogos friv 4 school

  2. Geesh, what an ego on this one. Sure hope he and those other Founding Fathers can put in a few clauses about women’s independence in all those documents they’re fighting about because being unable to own property or vote, and precluded by sex from 98 percent of jobs in the Colonies is really slowing down my game. I’d dump this jerk in a heartbeat if I had more options.
    Jogo 2019
    jogo 360 online
    io games for school