2 Answers 2. The Moon has an orbital eccentricity of 0.0549, so its path around the Earth is not perfectly circular and the distance between the Earth and the Moon will vary from the Earth's frame of reference (Perigee at 363,295 km and apogee at 405,503 km), see for example second animation explaining Lunar librations in this answer.
The attack was part of the Al-Anfal Campaign in northern Iraq, as well as part of the Iraqi attempt to repel the Iranian Operation Zafar 7. It took place 48 hours after the fall of the town to Iranian army. The attack killed between 3,200 and 5,000 people and injured 7,000 to 10,000 more, most of them civilians.
The opposition-run Health Department in Idlib Province, where the attack took place, said 69 people had died, providing a list of their names. The dead were still being identified, and some humanitarian groups said as many as 100 had died. The government of Mr. Assad, who renounced chemical weapons nearly four years ago after a large chemical attack that American intelligence agencies concluded was carried out by his forces, denied that his military had been responsible, as he has done every time chemical munitions have been used in Syria.