Minor planets and related objects. XXVII. Lightcurves for 887 Alinda.
Abstract
Eleven light curves and UBV photometry of the Amor asteroid Alinda, a candidate for having a cometary origin, are analyzed. A probable rotation period of 73 h 58 m + or - 3 m (p.e.) is derived on the assumption of two maxima and two minima per cycle in a composite light curve. An absolute V magnitude of 14.10 + or - 0.08 and a phase coefficient of 0.042 + or - 0.003 mag/deg in V are obtained, along with a B-V color of 0.86 + or - 0.02 and a U-B color of 0.50 + or - 0.05, both extrapolated to zero phase. The rotation period is shown to be the longest yet observed for an asteroid. It is concluded that the colors of Alinda are not unusual for an asteroid, that Alinda is probably not an extinct cometary nucleus, that the slow rotation may be a consequence of one or more collisions, and that the pole of Alinda may be nearly perpendicular to the ecliptic.
- Publication:
-
The Astronomical Journal
- Pub Date:
- February 1979
- DOI:
- 10.1086/112417
- Bibcode:
- 1979AJ.....84..269D
- Keywords:
-
- Amor Asteroid;
- Astronomical Photometry;
- Light Curve;
- Periodic Variations;
- Planetary Rotation;
- Ubv Spectra;
- Least Squares Method;
- Luminous Intensity;
- Phase Shift;
- Position (Location);
- Ultraviolet Photometry;
- Visual Photometry;
- ASTEROIDS;
- LIGHTCURVES;
- PHOTOMETRY;
- AMOR ASTEROIDS;
- ALINDA ASTEROID;
- ROTATION;
- PERIOD;
- OBSERVATIONS;
- POSITION (LOCATION);
- Lunar and Planetary Exploration; Asteroids;
- Light Curves:Minor Planets;
- Minor Planets:UBV Photometry