NEW YORK, NOV. 30 -- FBI officials searching the house of El Sayyid Nosair, accused assassin of Rabbi Meir Kahane, have found a list containing the names of as many as six prominent New Yorkers, including a member of Congress and two federal judges, and have warned that they could be the targets of terrorists.

Rep. Gary L. Ackerman (D-N.Y.), named on the list, said today that he had met with FBI agents who showed him a copy of a page from a small address and date book identified as Nosair's property. A list of names was scrawled inside the front cover, and pasted above the list was a newspaper photograph of Ackerman, he said.

The photo was cut from a 1989 article about Ackerman introducing House legislation calling for extradition of Sheik Abdul Karim Obeid, a Muslim cleric believed responsible for the kidnapping and hanging of Marine Lt. Col. William Higgins, a hostage held in Lebanon and executed in 1989.

Police maintain that Nosair, an Egyptian-born city maintenance worker, acted alone in the point-blank shooting of Kahane in a Manhattan hotel Nov. 5. But FBI officials are exploring whether Nosair, indicted last week by a grand jury, may be linked to terrorist organizations.

The list of names, first reported today in New York Newsday, includes Ackerman; Judges Jack B. Weinstein and Edward Korman of U.S. District Court in Brooklyn; former assistant U.S. attorney Jacques Simmelman, and Howard Adelman, a columnist for the Jewish Press. Ackerman said the list bore a sixth name that "sounds like a Jewish name," but he declined to be more specific.

Newsday reported officials as saying several people on the list were associated with legal proceedings at federal court in Brooklyn in 1987 involving extradition from Venezuela to Israel of Mahmoud M. Atta, who identified himself as a member of the Palestine Liberation Organization. He was accused of a 1986 attack on a bus carrying settlers to the Israeli-occupied West Bank.

FBI spokesman Floyd Wiltz refused to comment on the list today and said, "We're looking at all possibilities" regarding Nosair's possible affiliation with terrorists.

New York Police Capt. Steven Davis also refused to discuss the list, saying, "We virtually have considered the murder of Meir Kahane a closed case at this point. We're satisfied we have the person responsible." Davis said police had "no indication" that Nosair planned any other acts of violence.

"The official line is that he acted alone, but that's a pretty quick conclusion to reach two days after a guy is assassinated," Ackerman said. "I don't usually subscribe to conspiracy theories . . . but this trail hasn't ended. It has led to a gun and a list, on which I unhappily find myself."

Investigators have traced the revolver allegedly used by Nosair to retired police officer Raymond Murteza in Waterbury, Conn., who at one time had a federal gun dealer's license.

Referring to Nosair, Ackerman said, "I don't think I ever laid eyes on the guy before in my life. I don't think he ever saw me either. He ain't from my shul {synagogue}, as they say."