To determine a preliminary orbit and predict the position of a minor body, enter two observations from different nights in the form below. Use the Julian Date (JD) Calculator to create the required JD value for each observation and the prediction date. The Vaisala method is most accurate when there are a couple of days between the two observations as well as the prediction date. Right Ascension and Declination can be entered in sexagesimal (21 18 33.3, 21:18:33.3, 21h 18m 33.3s) or decimal (21.30925) format.
|JULIAN DATE||RIGHT ASCENSION||DECLINATION|
|DATE OF PREDICTION|