Perov, N. I. An unorthodox method of determining the unperturbed orbits of unknown space objects from partial data of optical observations. (English) Zbl 0575.70027 Sov. Astron. 28, 334-336 (1984). Translation from Astron. Zh. 61, No.3, 571-576 (Russian) (1984; Zbl 0541.70039). MSC: 70M20 Orbital mechanics Keywords:elements of Kepler’s orbits of unidentified artificial satellites; two angular observations Citations:Zbl 0541.70039 PDFBibTeX XMLCite \textit{N. I. Perov}, Sov. Astron. 28, 334--336 (1984; Zbl 0575.70027)