Visual observations of artificial earth satellites in Finland, 1972 January-1972 December.
Contributors: Leinonen, E.; Såltin, H. W.
Publisher: University of Helsinki
Published: 1973
Place of publication: [Helsinki]
Language: eng
Number of pages: 107
Subjects: Artificial satellites -- Tracking.
Notes: "Reading accuracy of the observations is Os.1 in time and O₀.1 in position."
Prepared by E. Leinonen and H. W. Såltin from observations made at the Jokioinen meteorological observatory.