| Minorplanet: | yes |
| Background: |
|
| 492 Gismonda | |
| Mpc Name: | (492) Gismonda |
| Alt Names: | 1902 JR |
| Discovered: | 3 September 1902 |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Eccentricity: | 0.17747 |
| Semimajor: | 3.1136AU |
| Perihelion: | 2.561AU |
| Aphelion: | 3.6662abbr=onNaNabbr=on |
| Inclination: | 1.6188° |
| Asc Node: | 46.215° |
| Arg Peri: | 296.611° |
| Mean Motion: | / day |
| Observation Arc: | 113.62 yr (41499 d) |
| Uncertainty: | 0 |
| Abs Magnitude: | 9.9 |
| Rotation: | 6.488abbr=onNaNabbr=on |
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.[1] It is orbiting 3.1136AU from the Sun with a period of 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.
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 . The spectrum suggests the surface is covered with a fine grained silicate mantle. Photometric observations of Gismonda made in 1902 produce a light curve displaying a rotation period of with a brightness variation of in magnitude
