帝谷星表(Tycho1)--包含988758颗恒星,包含赤经、赤纬、视星等……等字段,文本格式,字段说明见其中的ReadMe文件。
1- 2 I2 h RAh Right Ascension ICRS, Epoch=J2000.0 (hours)
4- 5 I2 min RAm Right Ascension ICRS (minutes)
7- 13 F7.4 s RAs Right Ascension ICRS (seconds)
...
69- 74 F6.3 mag BTmag ?Blue magnitude from Tycho (T32)
76- 81 F6.3 mag VTmag ?Visual magnitude from Tycho (T34)
83- 88 F6.3 mag B-V ?Johnson B-V from Tycho (T37)
2025-08-25 11:20:31
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Tycho
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