1046 Edwin information

1046 Edwin
	Orbital diagram of 1046 Edwin
Discovery
Discovered by	G. van Biesbroeck
Discovery site	Yerkes Obs.
Discovery date	1 December 1924
Designations
MPC designation	(1046) Edwin
Named after	Edwin Van Biesbroeck; (discoverer's son)
Alternative designations	1924 UA · 1949 RB; 1949 YL
Minor planet category	main-belt · (outer); background
Orbital characteristics
	Epoch 23 March 2018 (JD 2458200.5)
	Uncertainty parameter 0
Observation arc	91.86 yr (33,553 d)
Aphelion	3.1769 AU
Perihelion	2.7895 AU
Semi-major axis	2.9832 AU
Eccentricity	0.0649
Orbital period (sidereal)	5.15 yr (1,882 d)
Mean anomaly	53.846°
Mean motion	0° 11m 28.68s / day
Inclination	7.8991°
Longitude of ascending node	10.745°
Argument of perihelion	47.898°
Physical characteristics
Mean diameter	25.15±0.66 km; 29.084±0.405 km; 36.355±0.604 km; 42.23 km (calculated)
Synodic rotation period	5.29±0.01 h; 5.2906±0.0001 h; 5.296±0.006 h; 5.30±0.02 h
Geometric albedo	0.057 (assumed); 0.1113±0.0145; 0.201±0.039; 0.235±0.014
Spectral type	SMASS = Xe · M
Absolute magnitude (H)	10.20 · 10.6; 11.08±0.29

1046 Edwin, provisional designation 1924 UA, is a background asteroid from the outer regions of the asteroid belt, approximately 30 kilometers (20 miles) kilometers in diameter. It was discovered on 1 December 1924, by Belgian–American astronomer George Van Biesbroeck at the Yerkes Observatory in Wisconsin, United States, who named it after his son, Edwin Van Biesbroeck.^[1] The potentially metallic asteroid has a short rotation period of 5.29 hours.^[4]

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