2026-03-12T13:03:36Z https://jaxa.repo.nii.ac.jp/oai

oai:jaxa.repo.nii.ac.jp:00038422 2023-06-20T22:40:57Z 1887:1891

Toward high-precision CCD light curve photometry of asteroids 中村, 士 Nakamura, Tsuko metadata only access 基準星 高精度 CCD 光度曲線 測光 シュミット望遠鏡 小惑星 オイラー章動 信号雑音比 reference star high precision CCD light curve photometry Schmidt telescope asteroid Eulerian nutation signal to noise ratio In an attempt to detect Eulerian free nutations in the observed spins of medium-sized to small asteroids, the following new trials were performed with a CCD (Charge Coupled Device) attached to the Kiso 1 m-Schmidt telescope, to obtain higher-precision light curves than those in traditional methods: (1) Construction of a synthesized reference star from several field stars, to reduce the error caused by the Poisson noise in photometric reference stars, and (2) High-rate acquisition of CCD frames, to allow a smoothing by a running-box mean and thereby to reduce the scattering of light curves. As for both trials, some examples of improvement are shown. 資料番号: AA0063352055 宇宙航空研究開発機構宇宙科学研究本部 Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS) 1995-12 eng conference paper https://jaxa.repo.nii.ac.jp/records/38422 第28回月・惑星シンポジウム Proceedings of the 28th ISAS Lunar and Planetary Symposium 205 208