Permanent historical factsheet

Mercury Rotation

United States of America · Science / Astronomy. Chronological records rendered directly from the World History Database.

3Records
1965–1967Date range
3Named people
0Places

Chronological records

1965

Rolf Dyce1965

Science / Astronomy

Dyce helps establish from radar measurements that Mercury's rotation period is close to 59 days rather than 88 days.

Gordon Pettengill1965

Science / Astronomy

Radar observations overturn the accepted 88-day rotation period and indicate that Mercury rotates in about 59 days.

1967

Charles Counselman1967

Science / Astronomy

Counselman examines the implications of the newly measured 59-day rotation period for theories of Mercury and the inner Solar System.

Names involved

Charles CounselmanGordon PettengillRolf Dyce

Provenance

This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.