San Pedro, January 2024: brief lights, four-second photographs and the Starlink-flare explanation

12 January 2024; photographs around 02:22–02:23 local · San Pedro, Misiones, Argentina

Photographs of brief lights moving in different directions were assessed by Argentina’s CIAE as Starlink reflections. The report used exposure metadata and a locality-and-time simulation.

Lights appearing within one sector

Argentina’s Centro de Identificación Aeroespacial documents a San Pedro report for 12 January 2024 under the witness name Facundo Romero. The observer described watching lights for about thirty minutes as they moved in different directions and went out abruptly. Photographs taken around 02:22–02:23 recorded at least five short trails. Camera metadata showed four-second exposures.

Exposure duration is important here. A photograph does not necessarily freeze an object into the shape it has to an unaided eye. Movement recorded over several seconds can become a line, and a brief brightening can leave only a short part of an otherwise longer path.

The agency’s proposed mechanism

CIAE compared the pattern with satellite reflections and ran a Stellarium reconstruction for the place, date and time. It reported several Starlink satellites crossing the south-southeastern sector, with solar geometry capable of producing brief glints. The agency classified the case type A, identified as sunlight reflected from Starlink satellites. It also compared the behaviour with earlier recorded flare cases.

This explanation differs from the familiar newly launched satellite train. A set of separate glints can appear in one portion of the sky while the satellites themselves follow different paths. The relevant test is therefore a reconstruction of direction and illumination, rather than a requirement that all lights form one moving line.

What is being attributed

UKPX has read the San Pedro section of the official annual report, including its exposure and simulation discussion. It has not independently rerun the historical orbit reconstruction. The identification is the Argentine agency’s published finding, not an additional UKPX measurement.

The year in an annual report title cannot safely be used as every incident’s year: the same volume also contains older observations. This entry belongs in 2024 because the San Pedro case itself gives that incident date. The source photographs and diagrams remain with the linked official report. A separately licensed town-sign photograph supplies context without presenting an unrelated sky image as evidence.

Sources and record notes

Argentina CIAE 2024 report, Facundo Romero / San Pedro case, printed pages 12–15.

Official CIAE publication index.

Map reference: Broad San Pedro town reference from the checked locality coordinates. The witness observed from the surrounding area; this does not identify the camera site or a satellite ground track. Coordinate source.

Sources checked 11 November 2026. Reported appearance tags describe the account, not a verified explanation.