Astronomisches Rechen-Institut Heidelberg

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ARI-Heidelberg Mitteilungen Serie B, No. 22

Author(s): Schubart, J.
Title: The Minor Planet (1221) Amor
Source: Astron. Astrophys. 2, 173-181
Year: 1969
Abstract: More than 200 accurate observations of Amor are available from five approaches to the earth between 1932 and 1964. Since observations obtained at small geocentric distances are very sensitive to small perturbative effects in the coordinates, a special method had to be developed for the determination of differential corrections to the orbit. Furthermore, the satisfactory representation of the observations of Amor turned out to be impossible, if Newcomb's value for the mass of the earth is adopted. A correction to this value results from the observations together with a new orbit. The paper presents elements for a number of epochs and ephemerides for 1916, 1924 and 1972. Since after 1972 the observing conditions of Amor will be unfavorable for a long time, observations during the coming approach in 1972 are of great importance.
Preprint issued:
Remarks: Erratum: Astron. Astrophys. 3, 256 (1969)

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