1775 Zimmerwald information

1775 Zimmerwald
Discovery
Discovered by	P. Wild
Discovery site	Zimmerwald Obs.
Discovery date	13 May 1969
Designations
MPC designation	(1775) Zimmerwald
Named after	Zimmerwald; (village; observatory)
Alternative designations	1969 JA · 1952 HB2; 1952 HD · 1953 TE2
Minor planet category	main-belt · Eunomia
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	67.20 yr (24,545 days)
Aphelion	3.0866 AU
Perihelion	2.1182 AU
Semi-major axis	2.6024 AU
Eccentricity	0.1861
Orbital period (sidereal)	4.20 yr (1,533 days)
Mean anomaly	148.54°
Mean motion	0° 14m 5.28s / day
Inclination	12.555°
Longitude of ascending node	195.94°
Argument of perihelion	84.725°
Physical characteristics
Dimensions	10.17±0.69 km; 10.232±0.088 km; 10.70±2.19 km; 11.03 km (calculated)
Synodic rotation period	122±5 h
Geometric albedo	0.21 (assumed); 0.21±0.09; 0.244±0.041; 0.247±0.035
Spectral type	S
Absolute magnitude (H)	12.08±0.31 · 12.1 · 12.26

1775 Zimmerwald, provisional designation 1969 JA, is a stony Eunomian asteroid and slow rotator from the middle region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 13 May 1969, by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland.^[10] It is named for the village of Zimmerwald, where the discovering observatory is located.^[2]

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