A mysterious object has caused a long-lasting and extreme dimming of a distant star, but is this object a 'failed star' brown dwarf, or an exceptionally massive super-Jupiter exoplanet?

A mystery object is dimming a distant star. Could it be a massive exoplanet, or a 'failed star'?

Source: space
Source Link: https://www.space.com/astronomy/exoplanets/a-mystery-object-is-dimming-a-distant-star-could-it-be-a-massive-exoplanet-or-a-failed-star