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arXiv 1806.02880astro-ph.EP
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小行星3634 Iwan的光变曲线和自转周期测定

Lightcurve and rotation period determination for asteroid 3634 Iwan

Z. Donchev, E. Vchkova Bebekovska, A. Kostov, G. Apostolovska

摘要:

2017年,保加利亚国家天文台罗真观测到小行星3634 Iwan的光变曲线。这颗小行星只在2017年3月22日的一个晚上被观察到,意外地出现在我们的目标小行星289 Nenetta的视野中。小行星光曲线数据库(LCDB; Warner et al. 2009)不包含任何先前报告的3634 Iwan结果。如果我们接受小行星的光照曲线是典型的有两个最大值和最小值,那么一个夜晚的观测就可以覆盖整个旋转周期。MPO老人星绘制的光变曲线提供了一个最佳的拟合,以会合周期$4.72\pm 0.06$ h与振幅$0.15\pm 0.02$ ma。我们的评估是,为周期解的唯一性,我们需要更长的观测跨度,这将揭示光变曲线极值的数量,并确认质量码U=3。

英文摘要:

Lightcurve of the asteroid 3634 Iwan observed at the Bulgarian National Astronomical Observatory Rozhen in 2017 is presented. The asteroid was observed only one night, on 22 March 2017 accidentally in the field of view in which our target for shape modeling asteroid 289 Nenetta was positioned. The Asteroid Lightcurve Database (LCDB; Warner et al. 2009) did not contain any previously reported results for 3634 Iwan. If we accept that the ligtcurve of the asteroid is typical with two maxima and minima, a single night observations covers the whole rotational cycle. The lightcurve plotted by MPO Canopus provides a best fit to synodic period of $4.72\pm 0.06$ h with amplitude of $0.15\pm 0.02$ mag. Our assessment is that for the uniqueness of the period solution we need longer observational span which will reveal the number of extrema of the lightcurve and confirm the quality code U=3.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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