CatWISE2020

An infrared celestial reference frame realized by the CatWISE2020 catalog

We investigate the astrometric properties of CatWISE2020 relative to Gaia DR3 and show that, after correcting systematic errors, it can serve as an infrared realization of the International Celestial Reference System.

Zhen-Wei Wang, Jia-Cheng Liu, Niu Liu, Zi Zhu, Jun Yao, Ibnu Nurul Huda, Xia-Xuan Zhang, Hua-Feng Yu