We present time-resolved photometry of the cataclysmic variable (CV) PTF1J2224+17 obtained during 4 nights in October 2018 and January 2019 from Inastars observatory. The object is variable on a period of 103.82 min. Archival Catalina Real-Time Transient Survey (CRTS), PTF, and ZTF-data show frequent changes between high and low states. Based on its photometric properties and the cyclotron humps in the identification spectrum the object is certainly classified as an AM Herculis star (or polar) with a likely magnetic field strength of B ~ 65 MG. Its accretion duty cycle was estimated from nine years of photometric monitoring to be about 35 %.

中文翻译：

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PTF1J2224 +17：短周期、高场极性

我们展示了在 2018 年 10 月和 2019 年 1 月从 Inastars 天文台的 4 个晚上获得的激变变量 (CV) PTF1J2224+17 的时间分辨测光。对象在 103.82 分钟的周期内是可变的。档案 Catalina 实时瞬态调查 (CRTS)、PTF 和 ZTF 数据显示高低状态之间的频繁变化。根据其光度特性和识别光谱中的回旋峰，该物体肯定被归类为 AM 大力神星（或极地），其磁场强度可能为 B ~ 65 MG。根据九年的光度监测估计，它的吸积占空比约为 35%。