Astronomy:409 Aspasia
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Short description: Main-belt asteroid
.png) A three-dimensional model of 409 Aspasia based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 9 December 1895 |
| Designations | |
| (409) Aspasia | |
| Pronunciation | /æˈspeɪʒ(i)ə/[1] |
| Named after | Aspasia |
| 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) |
| |{{{apsis}}}|helion}} | 2.7640 astronomical unit|AU (413.49 Gm) |
| |{{{apsis}}}|helion}} | 2.3865 AU (357.02 Gm) |
| 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° |
| 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. https://www.merriam-webster.com/dictionary/Aspasia.
- ↑ 2.0 2.1 2.2 Yeomans, Donald K., "409 Aspasia", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=409, retrieved 10 May 2016.
- ↑ 3.0 3.1 3.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ 4.0 4.1 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.
- ↑ 5.0 5.1 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, doi:10.1051/aas:1998393, Bibcode: 1998A&AS..128..525P.
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
- 409 Aspasia at the JPL Small-Body Database
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