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1996•Astronomy & Astrophysics Supplement SeriesOpen access

The photoelectric astrolabe catalogue of Yunnan Observatory (YPAC)

Hui Hu, LI Dong-ming, Yongsheng Li, Wang Rui, Xiaoming Li

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Abstract

The positions of 53 FK5, 70 FK5 Extension and 486 GC stars are given for the equator and equinox J2000.0 and for the mean observation epoch of each star. They are determined with the photoelectric astrolabe of Yunnan Observatory. The internal mean errors in right ascension and declination are ±0 046 and ±0059, respectively. The mean observation epoch is 1989.51.

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The positions of 53 FK5, 70 FK5 Extension and 486 GC stars are given for the equator and equinox J2000.0 and for the mean observation epoch of each star. They are determined with the photoelectric astrolabe of Yunnan Observatory. The internal mean errors in right ascension and declination are ±0 046 and ±0059, respectively. The mean observation epoch is 1989.51.

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Available abstract

The positions of 53 FK5, 70 FK5 Extension and 486 GC stars are given for the equator and equinox J2000.0 and for the mean observation epoch of each star. They are determined with the photoelectric astrolabe of Yunnan Observatory. The internal mean errors in right ascension and declination are ±0 046 and ±0059, respectively. The mean observation epoch is 1989.51.

Key concepts: Astrolabe, Equinox, Right ascension, Declination, Epoch (astronomy), Observatory, Astrometry, Geodesy

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