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Date (UT)          Mag.   M    Catalog       Inst.                     Observer
2001 Oct. 19.681    3.7   v    Tycho(V)      naked eye                 S. Yoshida
2001 Nov. 17.515    4.9   v    Tycho(V)      naked eye                 S. Yoshida
2001 Nov. 23.683    5.2   v    Tycho(V)      0.05-m refractor          S. Yoshida
2001 Dec.  9.424    5.6   v    Tycho(V)      0.05-m refractor          S. Yoshida
2001 Dec. 31.453    6.5   v    Tycho(V)      0.05-m refractor          S. Yoshida
2002 Aug.  5.733    3.0   v    Tycho(V)      naked eye                 S. Yoshida
2002 Oct.  1.666    4.1   v    Tycho(V)      10x24 binoculars          S. Yoshida
2002 Nov.  2.710    5.6   v    Tycho(V)      0.05-m refractor          S. Yoshida
2002 Dec. 26.553    7.9   v    Tycho(V)      25.4T f/6.3 + 50mm        S. Yoshida
2002 Dec. 29.531    7.9   v    Tycho(V)      25.4T f/6.3 + 50mm        S. Yoshida
2011 Oct.  7.726    2.7   v    BSC5          naked eye                 S. Yoshida
2019 Nov.  1.595    3.0   v    BSC5          naked eye                 S. Yoshida
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