Satellite Phobos-Grunt will hit Earth in early 2012, around January 12, 2012 approximately 5.5 days. The fall of Phobos-Grunt is not the first. Earlier there was Upper Atmosphere Research Satellite (UARS) belonging to NASA and the Roentgen Satellite (Rosat).

According to amateur astronomers Ma'rufin Sudibyo, the impact of the fall of the Phobos-Grunt will be more massive than the UARS and Rosat. This is caused by the characteristics of the Phobos-Grunt itself.

"Phobos-Grunt is more than 13 tons, twice the UARS. Secondly, there is the Phobos-Grunt who is designed to be very resistant to heat while turning into the Earth remains intact," explains Ma'rufin through a Facebook account, on Wednesday (28 / 12/2011).

Larger mass and the presence of heat-resistant materials will impact the amount of debris that reaches the Earth's surface, which is estimated to be greater.

"The third, most of its mass in the form of hydrazine, a rocket hipergolik materials are extremely toxic to humans. It is estimated hidrazinnya has changed so frozen due stranded in Earth orbit. However, when falling into the Earth's surface opens the possibility of residual liquid hydrazine is still there, "added Ma'rufin.

Ma'rufin explained that in the process fall within the period of January 12, 2011 approximately 5.5 days, Phobos Grunt will cross the territory of Indonesia. However, this does not necessarily make a big potential to fall in Indonesia. Opportunities globally fell on the plains is 1:1000.

However, Ma'rufin invite the community to be vigilant by continuing to monitor the movement of satellites. This can be done through http://foss.dirgantara-lapan.or.id/orbit/ or www.heavens-above.com.

In addition, he also reminded the public not to touch the satellite debris and objects that dikenainya if it turns out the satellite did fall in the territory of Indonesia. If the satellite crashed into the house, then people should look at the pattern of damage and report to Lapan to be followed up.

Phobos-Grunt is a Russian mission to land on Phobos, moon of Mars. This media is in charge of taking samples of Phobos soil and rocks and bringing them to Earth. Therefore, a vehicle equipped with heat resistant material. Phobos Grunt mission cost about Rp 1.5 trillion. The failure of Russia to send mission to Phobos is the umpteenth time, after being failed in 1988 and 1996.