The pole of (51) NEMAUSA

Details The pole of (51) NEMAUSA The pole of (51) NEMAUSA

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993an....314..381k&link_type=abstract

Astronomische Nachrichten (ISSN 0004-6337), vol. 314, no. 5, p. 381-390

Astronomy and Astrophysics

Astronomy

3

Asteroids, Axes Of Rotation, Latitude Measurement, Light Curve, Poles, Predictions, Astronomical Photometry, Computerized Simulation, Fourier Analysis, Spherical Harmonics

Scientific paper

The complex lightcurves make (51) Nemausa a good case for the study of general methods for pole determination. From six lightcurves the pole is determined to 20 hours 24 minutes; +53 deg (1950); the rotation is retrograde with period 7.782936 hours +/- 0.000005 hours. Presence of nongeometric scattering is proved by a significant 0.008 mag amplitude. Formulas and photometric elements are given for predictions of the shapes of lightcurves in future oppositions. The precision of the Fourier coefficients may be reduced below the present +/- 0.003 mag level by avoiding the systematic errors in the observations due to phase factor variations and discontinuities when changing comparison stars.

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