That is below the UN estimate of 60,000, but the Observatory's methodology is more conservative, requiring confirmation of the names of the dead.
Confirmation of the names of the final four crash victims came after police stressed they were "working hard" to formally identify the remaining people as soon as possible in order to bring some certainty to the families who have been waiting for news since the incident happened.
Confirmation of the names of the dead rolled in slowly, but by Friday, the conference attendees knew they had lost at least one superstar.
Not only did it decide that the MoD should issue a press statement giving details of Kelly's background, it also led, Sir Kevin agreed, to the decision to prepare a question and answer briefing paper for the media which provided even more clues to Kelly's identity, including confirmation of his name to those journalists who had guessed it, in a procedure of which Kelly was totally unaware.
Lamar did not return multiple HuffPost requests for confirmation of his name.
And to be clear, she is a target: a user on the second page asks for confirmation of the name posted on the first.
The confirmation of the last four names completes the formal identification of all those who died in the incident.
Many Web sites offer limited personal information free, like confirmation of an individual's name, age, location and family members.
Mr. McCain and his allies say they remain proud of the deal they cut because it avoided a potential constitutional crisis in the Senate and led to the confirmation of two Supreme Court justices named by President Bush, as well as several federal appeals court judges.
The prenatal centre in the city of Semipalatinsk, about 130 kilometres (95 miles) from the testing-ground of the same name, offers confirmation of the effects of radiation.
