Asteroid (93) Minerva is a triple system. both satellite Minerva-I Aegis and Minerva-II Gorgoneion were discovered in 2009. We found a precovery observation of Aegis in 2003 (6 years before its discovery). The derivated orbit on this large time span show a precision of 8 mas. During the last occultation event on 2014, September the 6th, the satellite Gorgoneion have been observed by S. Messner. Giving a new position we obtained a new orbit for this occultation. The Tycho star with mag 9.5 on V-band, should disappear for 0.5 second only for Gorgoneion and 0.7 second for Aegis. The greatest uncertainty comes from the relative position of Minerva and the occulted star. If you plan to observe, adjust your integration time (0.1 sec idealy) and check the lastest update on Steve Preston Page. Clear skies Fred
Ephemeris from Miriade for the date of occultation and geocenter frame. For more specific ephemeris please use the documentation of Miriade.