8691 Etsuko

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Discovery and designation
Discovered by Yoshio Kushida and Osamu Muramatsu
Discovery site Yatsugatake South Base Observatory
Discovery date October 21, 1992
MPC designation 8691
Alternative names 1992 UZ1
Orbital characteristics
Epoch May 14, 2008
Aphelion 2.8188173
Perihelion 2.0697359
Eccentricity 0.1532317
Orbital period 1395.8024730
Mean anomaly 33.42243
Inclination 5.50322
Longitude of ascending node 308.36822
Argument of perihelion 75.43492
Physical characteristics
Absolute magnitude (H) 13.9

8691 Etsuko (1992 UZ1) is a main-belt asteroid discovered on October 21, 1992 by Yoshio Kushida and Osamu Muramatsu at the Yatsugatake South Base Observatory (八ヶ岳南麓天文台?).

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