کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1776086 | 1021224 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Discovery and characteristics of the Kuiper belt binary 2003QY90
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Discovery and characteristics of the Kuiper belt binary 2003QY90 Discovery and characteristics of the Kuiper belt binary 2003QY90](/preview/png/1776086.png)
چکیده انگلیسی
We present photometric and astrometric results from four epochs of ground-based observations at the Magellan telescopes of the Kuiper belt binary 2003QY90. Resolved observations show both components to be highly variable and often of nearly equal brightness, causing difficulty in distinguishing between the primary and secondary components for observations spaced widely in time. Resolved lightcurve observations on one night show one component to have a single-peaked rotation period of 3.4±1.1h and a peak-to-peak amplitude of 0.34±0.12mag. The other component exhibits a less constrained lightcurve, with a single-peaked rotation period of 7.1±2.9h and a peak-to-peak amplitude of 0.90±0.36mag. Under the assumption of equal albedos, the diameter ratio is 1.25±0.11 in the Sloan iâ² filter. While we cannot determine an orbit from our four distinct epochs of observation (due to ambiguity in component identification), we place limits on the orbital period of the system of 300-600 days, we find a minimum semi-major axis of 13,092 km for a circular orbit and a system mass range of (2.3-18.0)Ã1017kg depending on the identification of components in our observations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 183, Issue 1, July 2006, Pages 179-185
Journal: Icarus - Volume 183, Issue 1, July 2006, Pages 179-185
نویسندگان
S.D. Kern, J.L. Elliot,