Frederick Gordon Jr., 77, who worked for the National Aeronautics and Space Administration for 28 years before retiring in 1991 as a technical resources manager at the Goddard Space Flight Center, died Sept. 24 at his home in Bowie. He had a heart ailment.

Mr. Gordon, who graduated from Fordham University in his native New York, came to Washington when he joined NASA in 1963.

Over the years, he worked extensively on the LANDSAT project, which involved the scientific mapping of the Earth by satellite.

Mr. Gordon was involved in the technical monitoring of LANDSAT investigations and served as head of the radiation effects section of Goddard's spacecraft technology division.

In private life, Mr. Gordon was active in the Robert Burns Society of Annapolis and the St. Andrew Society. He explored his genealogy as well as Scottish history and music.

An Internet user, he was active in the Senior Citizens Computer Club of Bowie. He also was a member of Collington Masonic Lodge No. 230 in Bowie and helped found the Bowie youth soccer organization.

He was a frequent contributor to the "letters to the editor" section of the Bowie Blade, where he commented on Bowie civic developments.

Survivors include his wife of 55 years, Jean Brisco Gordon of Bowie; a son, Frederick III, of Columbia; four daughters, Kandys Fitzpatrick of Mount Airy, Darci Wismer of Toledo, Ohio, Connie Wescoe of Waldorf and Heather Gordon of Columbia; and 16 grandchildren.