Solar System Phenomena — Selected Minor Planets at Opposition in 2019

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The chart shows the positions selected minor planets at the instants of their oppositions. Only 4 Vesta has the potential to reach naked-eye visiblity but the other large asteroids — 1 Ceres, 2 Pallas and 3 Juno — are visible in small- to medium-sized telescopes. The trans-Neptunian dwarf planets require large telescopes and detailed finder charts, and with the possible of exception of 134340 Pluto, are probably beyond the reach of amateur astronomers. Note that many of these minor planets have relatively large inclinations and may stray far from the ecliptic (which is marked on the chart).

11 January 134340 Pluto conjunction
07 March 4 Vesta conjunction
25 March 136472 Makemake opposition in Coma Berenices magnitude +17.1
10 April 2 Pallas opposition in Boötes magnitude +7.9
13 April 136199 Eris conjunction
16 April 136108 Haumea opposition in Boötes magnitude +17.3
28 May 1 Ceres opposition in Ophiuchus magnitude +7.0
14 July 134340 Pluto opposition in Sagittarius magnitude +14.5
22 August 3 Juno conjunction
28 September 136472 Makemake conjunction
17 October 136199 Eris opposition in Cetus magnitude +18.7
20 October 136108 Haumea conjunction
12 November 4 Vesta opposition in Cetus magnitude +6.5
03 December 2 Pallas conjunction


Minor planet positions at opposition are provided by the Minor Planet Center.