492 Gismonda is a main belt asteroid discovered by German astronomer Max Wolf in 1902. Gismonda is named after the daughter of Tancred, prince of Salerno, from Giovanni Boccaccio's work, The Decameron.[2] It is orbiting 3.11 AU (466 Gm) from the Sun with a period of 5.49 yr and an orbital eccentricity (ovalness) of 0.18. The orbital plane is inclined at an angle of 1.6° to the plane of the ecliptic.[1]
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg Observatory |
| Discovery date | 3 September 1902 |
| Designations | |
| (492) Gismonda | |
| Pronunciation | /dʒɪzˈmɒndə/ |
| 1902 JR | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.62 yr (41499 d) |
| Aphelion | 3.6662 AU (548.46 Gm) |
| Perihelion | 2.5610 AU (383.12 Gm) |
| 3.1136 AU (465.79 Gm) | |
| Eccentricity | 0.17747 |
| 5.49 yr (2,006.7 d) | |
| 267.617° | |
| 0° 10m 45.84s / day | |
| Inclination | 1.6188° |
| 46.215° | |
| 296.611° | |
| Physical characteristics | |
| 25.845±0.7 km | |
| 6.488 h (0.2703 d) | |
| 0.0795±0.005 | |
| 9.9 | |
This asteroid is a member of the Themis collisional family, which is one of the largest such groups in the belt. It has an estimated diameter of 50.3±1.1 km. The spectrum suggests the surface is covered with a fine grained silicate mantle.[3] Photometric observations of Gismonda made in 1902 produce a light curve displaying a rotation period of 6.488±0.005 h with a brightness variation of 0.16±0.02 in magnitude[4]
References
edit- ^ a b "492 Gismonda (1902 JR)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.
- ^ "(492) Gismonda". (492) Gismonda In: Dictionary of Minor Planet Names. Springer. 2003. p. 54. doi:10.1007/978-3-540-29925-7_493. ISBN 978-3-540-29925-7.
- ^ Licandro, J.; et al. (January 2012). "5-14 μm Spitzer spectra of Themis family asteroids". Astronomy & Astrophysics. 537. id. A73. Bibcode:2012A&A...537A..73L. doi:10.1051/0004-6361/201118142.
- ^ Koff, R. A. (June 2002). "Lightcurve Photometry of 492 Gismonda, 1046 Edwin, and 1310 Villigera". The Minor Planet Bulletin. 29: 25–26. Bibcode:2002MPBu...29...25K.
External links
edit- Lightcurve plot of (492) Gismonda, Antelope Hills Observatory
- 492 Gismonda at AstDyS-2, Asteroids—Dynamic Site
- 492 Gismonda at the JPL Small-Body Database
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