Case reconstruction
Date: 28 August 2015, 23:34 local. Place: terrace in Altea, Spain. Object: one orange/plasma/lava-like light. Motion: horizontal path toward open sea with gentle vertical oscillation.
The crucial point is geometry: for several seconds the object had mountain relief behind it from the witness line of sight. That excludes stars, planets, high satellites and many purely astronomical explanations.
Why it remains central
The case is not central because the photograph proves everything. It is central because the witness geometry, low relative altitude, horizontal motion and later recognition of PR004 produce a coherent target profile.
The unresolved quantities remain distance, height, speed, exact azimuth and full local flight/drone reconstruction.
Altea is not just a light in the sky. It is a terrain-referenced observation that defines why HEDHub needs geometry, not only video.