.png) 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/ |
| Named after | Aspasia |
| Alternative designations | 1895 CE |
| Minor planet category | Main belt |
| Adjectives | Aspasian |
| Orbital characteristics | |
| 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 (sidereal) | 4.13 yr (1509.5 d) |
| Mean anomaly | 260.362° |
| Mean motion | 0° 14 18.564 / day |
| Inclination | 11.262° |
| Longitude of ascending node | 242.19° |
| Argument of perihelion | 353.72° |
| Physical characteristics | |
| Dimensions | 161.61±6.8 km 176.33 ± 4.50 km |
| Mass | (1.18 ± 0.23) × 10 kg |
| Mean density | 4.10 ± 0.84 g/cm |
| Synodic rotation period | 9.022 h (0.3759 d) 9.021 h |
| Geometric albedo | 0.0606±0.005 |
| Absolute magnitude (H) | 7.62 |
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.
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. This is consistent with previous results.
References
- "Aspasia". Merriam-Webster.com Dictionary. Merriam-Webster.
- ^ Yeomans, Donald K., "409 Aspasia", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, archived from the original on 20 January 2016, 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 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
- 409 Aspasia at AstDyS-2, Asteroids—Dynamic Site
- 409 Aspasia at the JPL Small-Body Database
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