Siri (minor planet designation: 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]
Discovery | |
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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] |
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