论文标题
2019年1月13日至3月28日的（6478）Gault的活动
Activity of (6478) Gault during January 13 - March 28, 2019
论文作者
论文摘要
我们介绍了从2.46至2.30 au进行的活跃小行星（6478）的光度观察结果的结果，从1.79到2019年1月15日至1月28日，从1.79至1.42 AU进行的地理距离。观察结果是在2.5米的SAI MSU望远镜（CMO）上进行的。 （SPB）分别于2019年2月6日和3月28日。用宽带B，V和R过滤器获得小行星的直接图像。在所有观察日期都检测到类似彗星的结构。建造了颜色图，并沿尾巴沿着颜色变化进行了分析，以分析2019年1月15日进行的观察。 $afρ$是针对R滤波器计算的，从1月到2019年3月底的期间，评估的值在47至32厘米之间不等。主体的旋转周期是通过不同的方法估算的，约为1.79小时。讨论了触发Gault活动的可能机制。
We present the results of photometric observations of active asteroid (6478) Gault performed at heliocentric distances from 2.46 to 2.30 au and geocentric distances from 1.79 to 1.42 au between January 15 and March 28, 2019. Observations were carried out at the 2.5-m telescope of SAI MSU (CMO) on January 15, 2019 and at the 1.3-m and 0.61-m telescopes (SPb) on February 6 and March 28, 2019, respectively. The direct images of the asteroid were obtained with the broad-band B, V and R filters. Comet-like structures were detected at all observation dates. Colour maps were built and colour variations along the tail for the observation made on January 15, 2019 were analyzed. The $Afρ$ was calculated for the R filter, The evaluated value varies from 47 to 32 cm for the period from January to the end of March, 2019. The rotational period of the body is estimated from the light curve by different methods and is about 1.79 hr. Possible mechanisms of triggering Gault's activity are discussed.
