Like earlier pointed out, 'great star', 'burn', and 'seven' relate to Sirius.  Now we can associate the "great star" with  the Place Charles de Gaulle (Arc de Triomphe + the surrounding circular "square") since it was originally called the Place d'Etoile or 'Square of the Star', further linking the two quatrains II-41 and II-48.

From a slightly different angle, the fragments of Comet SL-9 'burned' Jupiter for about '7 days' in July 1994 and caught the attention of the world.  The dates of this 'light show' were July 16~22 which roughly coincides with one of the key 'Sirius dates', July 20, mentioned earlier.  Moreover, the dates July 16~22 very closely matches the dates of the historic Apollo 11 mission - first ever manned landing on the Moon - which were July 16~24 (and the landing occurred on the key date, July 20).  This is meaningful especially when you consider the fact that Apollo the sun god could be identified with Horus the sun god (the son of Isis, and earlier associated with Sirius and Mars).  Recall also that July 20 was associated with the 'flood' (of the Nile) in conjunction with Sirius.  In Greco-Roman mythology, the god who causes the Flood to punish mankind is Jupiter - the very planet Comet SL-9 crashed into.  And Jupiter was mythologically associated with the 'eagle' - the very name of the spacecraft that landed on the moon on that exact flood/Sirius date, July 20 (1969)!