I roto i te 1880, Johann Palisa, te kaiwhakahaere o te Austrian Naval Observatory (538), i whakaekea he tūranga rite te kaiawhina i te whakaoti hou Vienna Observatory. Ahakoa te mahi tohu he whakaiti mo Johann, hoatu e te reira ia uru ki te hou 27-inihi (690 mm) refractor, te taiaho nui rawa i roto i te ao i taua wa. Na tenei wāhi i kitea e Johann kua 27 asteroids, a ka whakamahi ia i te Vienna 27-inihi (690 mm) me 12-inihi (300 mm) taputapu ki te kitea te atu 94 asteroids i mua i mahue ia. I roto i tona discoveries ko te asteroid 253 Mathilde, kitea i runga i Noema 12, 1885. i muri i whakaarohia nga huānga orbital tuatahi o te asteroid e V. A. Leufbeaker, tetahi atu astronomer Austrian mahi i te Paris Observatory. I whakaarohia te ingoa o te asteroid e Johann, i muri i te wahine o Leufbeaker, te tuarua o Mathilde Showy, i hoatu ki a ia te uru ki te hou 27-inihi (690 mm) refractor, i te
Ko te 27