On Dec 8 2020 the US Supreme Court denies Sen. Mike Lee's emergency application for injunctive relief to vacate the Pennsylvania Supreme Court decision on Nov 25 2020.
The US Supreme Court order to deny the application comes as "Order in pending case" containing one sentence:
The application for injunctive relief presented to Justice Alito and by him referred to the Court is denied.
This denial was reported by NPR, Wall Street Journal and CNN without specifying any details on HOW the decision was arrived at, whether all 9 justices voted, or whether the order itself implies a unanimous consent.
For example, NPR only added:
... said the court's one-sentence order, which did not suggest any dissent among the nine justices.
while WSJ only noted:
The U.S. Supreme Court’s order came shortly after it finished receiving written legal arguments from the parties on Tuesday afternoon.
and CNN noted:
Tuesday's one-line order was issued with no noted dissents or comment from any of the nine justices.
The Question: What is the official procedure / process that the US Supreme Court uses to deny an emergency application for injunctive relief like this? Do all 9 justices required to vote? Do other denials contain more details of the voting result in the order?