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Observers are reminded of the efficiency of making and reporting observations of specific objects on pairs of nearby nights, as the accuracy of an isolated single-night observation can be difficult to judge. Two nights of observation should be considered mandatory for those one-opposition objects making a predicted return.
This page is also available in designation order.
In the lists below, the objects are divided into three categories: one-opposition unnumbered objects; multiple-opposition unnumbered objects; and numbered objects. For reference, the following quantities are given for each object: the uncertainty parameter U (where available), the arc in days or the number of oppositions utilised in the orbit solution, and low-precision values of the semi-major axis, eccentricity and inclination.
Enhanced 2000 Nov. 27. The lists below now allow easy access to MPES ephemerides of objects listed herein. Use the checkboxes on the left-hand side to select the objects (from any of the three lists) that you want to observe. Select your observing options from the bottom of the page and then select `Get ephemerides'. In the lists, the data given under `Currently' is as follows: current R.A. in decimal hours; current Decl. in decimal degrees; current V magnitude; current elongation; and current motion in deg/day. `Current' refers to the time this page was last updated.
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