409 Aspasia

409 Aspasia
	A three-dimensional model of 409 Aspasia based on its light curve
Discovery
Discovered by	Auguste Charlois
Discovery date	9 December 1895
Designations
MPC designation	(409) Aspasia
Pronunciation	/æˈspeɪʒ(i)ə/[1]
Named after	Aspasia
Alternative designations	1895 CE
Minor planet category	Main belt
Adjectives	Aspasian
Orbital characteristics[2]
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	120.33 yr (43952 d)
Aphelion	2.7640 AU (413.49 Gm)
Perihelion	2.3865 AU (357.02 Gm)
Semi-major axis	2.5752 AU (385.24 Gm)
Eccentricity	0.073284
Orbital period	4.13 yr (1509.5 d)
Mean anomaly	260.362°
Mean motion	0° 14m 18.564s / day
Inclination	11.262°
Longitude of ascending node	242.19°
Argument of perihelion	353.72°
Physical characteristics
Dimensions	161.61±6.8 km[2]; 176.33 ± 4.50 km[3]
Mass	(1.18 ± 0.23) × 1019 kg[3]
Mean density	4.10 ± 0.84 g/cm3[3]
Rotation period	9.022 h (0.3759 d)[2]; 9.021 h[4]
Geometric albedo	0.0606±0.005
Absolute magnitude (H)	7.62

Aspasia (minor planet designation: 409 Aspasia) is a large main-belt asteroid that was discovered by French astronomer Auguste Charlois on 9 December 1895 in Nice. It is classified as a CX-type asteroid.[5]

Photometric observations of this asteroid at the Palmer Divide Observatory in Colorado Springs, Colorado, during 2007–8 gave a light curve with a period of 9.021455 ± 0.000009 hours.[4] This is consistent with previous results.[5]

References

"Aspasia". Merriam-Webster Dictionary.
Yeomans, Donald K., "409 Aspasia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 10 May 2016.
Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
Warner, Brian D.; et al. (October 2008), "Shape and Spin Models for Four Asteroids", The Minor Planet Bulletin, 35 (4): 167–171, Bibcode:2008MPBu...35..167W.
Piironen, J.; et al. (March 1998), "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids", Astronomy and Astrophysics Supplement, 128 (3): 525–540, Bibcode:1998A&AS..128..525P, doi:10.1051/aas:1998393.

External links

Lightcurve plot of 409 Aspasia, Palmer Divide Observatory, B. D. Warner (2008)
Asteroid Lightcurve Database (LCDB), query form (info)
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
409 Aspasia at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
409 Aspasia at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[1] "Aspasia". Merriam-Webster Dictionary.

[JPL-2] Yeomans, Donald K., "409 Aspasia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 10 May 2016.

[Carry2012-3] Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.

[Warner2008-4] Warner, Brian D.; et al. (October 2008), "Shape and Spin Models for Four Asteroids", The Minor Planet Bulletin, 35 (4): 167–171, Bibcode:2008MPBu...35..167W.

[aas128_525-5] Piironen, J.; et al. (March 1998), "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids", Astronomy and Astrophysics Supplement, 128 (3): 525–540, Bibcode:1998A&AS..128..525P, doi:10.1051/aas:1998393.