2033 Basilea

2033 Basilea
Discovery
Discovered by	P. Wild
Discovery site	Zimmerwald Obs.
Discovery date	6 February 1973
Designations
MPC designation	(2033) Basilea
Named after	Basel (Swiss city)
Alternative designations	1973 CA · 1953 DA; 1953 EY · 1955 WD; 1955 XD
Minor planet category	main-belt · (inner)
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	63.33 yr (23,133 days)
Aphelion	2.4734 AU
Perihelion	1.9765 AU
Semi-major axis	2.2250 AU
Eccentricity	0.1117
Orbital period (sidereal)	3.32 yr (1,212 days)
Mean anomaly	191.60°
Mean motion	0° 17m 49.2s / day
Inclination	8.4634°
Longitude of ascending node	321.72°
Argument of perihelion	134.56°
Physical characteristics
Dimensions	5.710±0.088 km; 6.25±1.51 km; 6.322±0.051 km; 7.82 km (calculated)
Synodic rotation period	6.5287±0.0002 h
Geometric albedo	0.20 (assumed); 0.29±0.13; 0.3688±0.0966; 0.419±0.088
Spectral type	S
Absolute magnitude (H)	12.7 · 12.9 · 13.01±0.09 · 13.19

2033 Basilea, provisional designation 1973 CA, is a stony asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 6 February 1973, by astronomer Paul Wild at the Zimmerwald Observatory near Bern, Switzerland.^[8] The asteroid was named for the Swiss city of Basel.^[2]

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