332 Siri

332 Siri is a main belt asteroid in orbit around the Sun. It was discovered by German astronomer Max Wolf on 19 March 1892 in Heidelberg.^[2] The origin of this asteroid's name is unclear. On October 5, 2092, 332 Siri will pass 4,981,670 km (3,095,470 mi) from the asteroid 29 Amphitrite with a relative velocity of 2.054 kilometers per second.^[1]

332 Siri

Orbital diagram
Discovery
Discovered by	Max Wolf
Discovery site	Heidelberg
Discovery date	19 March 1892
Designations
MPC designation	(332) Siri
Alternative designations	A896 BA, A922 XA
Minor planet category	Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	124.05 yr (45308 d)
Aphelion	3.0216 AU (452.02 Gm)
Perihelion	2.5269 AU (378.02 Gm)
Semi-major axis	2.7742 AU (415.01 Gm)
Eccentricity	0.089172
Orbital period (sidereal)	4.62 yr (1687.8 d)
Mean anomaly	186.290°
Mean motion	0° 12m 47.88s / day
Inclination	2.8473°
Longitude of ascending node	31.575°
Argument of perihelion	296.463°
Physical characteristics
Dimensions	40.37±1.8 km
Synodic rotation period	8.0074 h (0.33364 d)
Geometric albedo	0.1719±0.017
Absolute magnitude (H)	9.7,[1] 9.65[2]