717 Wisibada

717 Wisibada
Discovery
Discovered by	F. Kaiser
Discovery site	Heidelberg Obs.
Discovery date	26 August 1911
Designations
MPC designation	(717) Wisibada
Pronunciation	/vɪzɪˈbeɪdə/
Named after	Wiesbaden (German city)
Alternative designations	A911 QK · 1911 MJ
Minor planet category	main-belt · (outer) background
Orbital characteristics
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc	108.68 yr (39,695 d)
Aphelion	3.9650 AU
Perihelion	2.3124 AU
Semi-major axis	3.1387 AU
Eccentricity	0.2633
Orbital period (sidereal)	5.56 yr (2,031 d)
Mean anomaly	150.82°
Mean motion	0° 10^m 37.92^s / day
Inclination	1.6463°
Longitude of ascending node	343.55°
Argument of perihelion	24.403°
Physical characteristics
Mean diameter	27.294±0.444 km 31.04±4.7 km 32.52±0.37 km
Synodic rotation period	n.a.
Geometric albedo	0.061±0.002 0.0666±0.026 0.086±0.009
Spectral type	Tholen = D X: B–V = 0.701±0.061 U–B = 0.242±0.073
Absolute magnitude (H)	10.9 11.10

717 Wisibada (prov. designation: A911 QK or 1911 MJ) is a dark background asteroid from the outer regions of the asteroid belt. It was discovered on 26 August 1911, by German astronomer Franz Kaiser at the Heidelberg-Königstuhl State Observatory in southwest Germany. The D-type asteroid measures approximately 29 kilometers (18 miles) in diameter with no rotation period yet determined. It was named after the discoverer's birthplace, the city of Wiesbaden in Hesse, Germany.