332 Siri

332 Siri
	Lightcurve-based 3D model of 332 Siri
Discovery
Discovered by	Max Wolf
Discovery site	Heidelberg
Discovery date	19 March 1892
Designations
Alternative designations	A896 BA, A922 XA
Minor planet category	Main belt
Orbital characteristics
	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
Mass	(4.0±1.6)×1017 kg
Mean density	11.79 g/cm3
Synodic rotation period	8.0074 h (0.33364 d)
Geometric albedo	0.1719±0.017
Absolute magnitude (H)	9.7, 9.65

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. 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.

Notes

↑ Calculated from its standard gravitational parameter GM = 0.027±0.011 km³/s².

References

1 2 3 "332 Siri". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 332. Retrieved 11 May 2016.
1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.
1 2 Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.

External links

Lightcurve plot of 332 Siri, Palmer Divide Observatory, B. D. Warner (2008)
Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
332 Siri at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
332 Siri at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by adding missing information.

[3] Calculated from its standard gravitational parameter GM = 0.027±0.011 km³/s².

[JPL-1] 1 2 3 "332 Siri". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 332. Retrieved 11 May 2016.

[Fuentes-Muñoz2025-2] 1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.

[Warner2007-4] 1 2 Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.