2. Orbit Determination Classically, in orbit determination, the aim is to nd the orbital elements of a planet, comet, or a minor planet using the smallest possible number of observed positions

2. Orbit Determination
Classically, in orbit determination, the aim is to _nd the orbital elements of a planet,

comet, or a minor planet using the smallest possible number of observed positions. An

observation made from Earth, at a speci_c time, gives us two spherical coordinates, either

equatorial (right ascension _ and declination _) or ecliptic (ecliptic longitude and latitude).

If we want to obtain six orbital elements, we need the same number of independent

observational values, corresponding to three observations.
2. Orbitani aniqlash.

Odatda, orbitani aniqlashdan maqsad sayyoraning orbital elementlarini qidirish, kuzatilgan nuqtalarning eng kam sonidan foydalangan holda, kometa yoki kichik sayyoraning aniq ma'lum bir vaqtda yerdan olingan kuzatuvlar natijasida bizga ikkita sferik koordinatalarni ekvatorial (o'ng ko'tarilish va mayl) yoki ekliptik (ekliptik uzunlik va kenglik) larni topish. Agar oltita orbital elementga ega bo'lishni istasak, bizga bir xil miqdordagi uchta kuzatishga to'g'ri keladigan kuzatuv qiymatlari kerak bo'ladi.