摘要
通过比较地球定向参数（EOP）序列和对应的地因参考架，得到了依巴谷输入星表（HIC）和临时星表H37与国际地球自转服务（IERS）基于甚长基线干涉测量（VLBI）建立的河外天球参考架（ICRF）之间的旋转参数。在J2000．0历元，HIC和H37至ICRF的旋转分别为[7．4±1．1mas，70．0±1．2mas，86．8±6.9mas]和[－27.4±1.0mas，10.4±1．0mas，70．3±4．6mas]。由于光学仪器位置坐标精度较低，第三个旋转角的可信度较差。
The rotational parameters of Hipparcos Input Catalogue (HIC) and provisional catalogue H37 to the International Earth Rotation Service (IERS) Celestial Reference Frame(ICRF), which is based on the Very Long Baseline Interferometry (VLBl), are determined by comparing Earth Orientation Parameters (EOP) and the corresponding Terrestrial Reference Fr1mes (TRF). At the epoch J2000. 0, the rotation of HIC to ICRF is 7. 4±1. 1mas, 70.0±1 . 2mas, 86. 8±6. 9mas ;the rotation of H37 to ICRF is - 27. 4 ±1.0mas, 10. 4±1. 0mas, 70.3±4. 6mas. The precision of coordinates of ground-based optical instruments is low. The third rotation angle isdetermined in this paper.
出处
《陕西天文台台刊》
CSCD
1997年第6期83-87,共5页
Publications of The Shaanxi Astronomical Observatiory
关键词
依巴谷临时星表
天球参考架
定向参数
星系表
Hipparcos Provisional Cataloguel Celestlal Reference Frames
Orientation Parameters
