Oppositions-Ephemeride des Planeten (226
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H. Kreutz
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Article
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1891
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John Wiley and Sons
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English
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14 9.562, 9.4 12, 9.518, 9.403, 8.52311 9.500, in this object is unusually stroog as compared with the line whose wave-length is 500, the visual spectrum differs strikingly from that of other planetary nebulae. Cord. ZC. I 5h934 magn. 9, whose approximate position for 1900 is in RA. 15~15919, Decl.-