1963 Luminous Disc in the Indian Ocean

Summary

In June 1963, an observer in the Indian Ocean spotted a luminous disc descending eastward. The object was seen for three to four minutes at about 30 degrees elevation and appeared to move slightly faster than the ECHO satellite. Initially thought to be ECHO behind a cloud, the object maintained its appearance without changing, even through cloudless areas. Three people confirmed the sighting, and ECHO passed over the same location 30 minutes later, raising questions about whether it was a separate event or a misidentification. Described as a bright light behind a cloud with no clear outline, the object left no trail and defied easy categorization.

The official report could not identify the object, considering possibilities like balloon, aircraft, or astronomical event, but none were confirmed. The lack of photos or additional data left the sighting unresolved, making it a classic case of an unidentified observation.