Astronomy:328 Gudrun
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_Gudrun.png) Modelled shape of Gudrun from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 18 March 1892 |
| Designations | |
| (328) Gudrun | |
| Pronunciation | /ˈɡʊdruːn/[1] |
| Named after | Gudrun |
| Minor planet category | Main belt |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 104.41 yr (38135 d) |
| |{{{apsis}}}|helion}} | 3.43998 astronomical unit|AU (514.614 Gm) |
| |{{{apsis}}}|helion}} | 2.78126 AU (416.071 Gm) |
| 3.11062 AU (465.342 Gm) | |
| Eccentricity | 0.10588 |
| Orbital period | 5.486 yr (2,003.9 d) |
| Mean anomaly | 325.246° |
| Mean motion | 0° 10m 46.747s / day |
| Inclination | 16.1164° |
| Longitude of ascending node | 352.328° |
| 103.924° | |
| Physical characteristics | |
| Dimensions | 122.92±5.2 km[2] 122.59±3.72 km[3] |
| Mass | (3.16±0.46)×1018 kg[3] |
| Mean density | 3.27±0.55 g/cm3[3] |
| Rotation period | 10.992 h (0.4580 d) |
| Geometric albedo | 0.0425±0.004 |
| Cgh[4] | |
| Absolute magnitude (H) | 8.8 |
328 Gudrun is a large main-belt asteroid. It was discovered by German astronomer Max Wolf on March 18, 1892, in Heidelberg. This minor planet is orbiting the Sun at a distance of 3.11 astronomical unit|AU with a period of 5.486 yr and an orbital eccentricity of 0.106. The orbital plane is inclined at an angle of 16.1° to the plane of the ecliptic.[2]
Analysis of the light curve generated from photometric data collected in March 2012 provide a rotation period estimate of 10.992±0.002 h with a brightness variation of 0.32±0.02 in B magnitude.[5] A study in 2022 found a classification of Cgh for 328 Gudrun, suggesting this is a dark, carbonaceous asteroid.[4]
References
- ↑ "Gudrun". Merriam-Webster Dictionary. https://www.merriam-webster.com/dictionary/Gudrun.
- ↑ 2.0 2.1 2.2 "328 Gudrun". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=20000328.
- ↑ 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 Hasegawa, Sunao (November 2022), "Spectral Evolution of Dark Asteroid Surfaces Induced by Space Weathering over a Decade", The Astrophysical Journal Letters 939 (1): id. L9, doi:10.3847/2041-8213/ac92e4, Bibcode: 2022ApJ...939L...9H.
- ↑ Schmidt, Richard E. (July 2012), "The Rotation Period of 328 Gudrun", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 39 (3): p. 109, Bibcode: 2012MPBu...39..109S.
External links
- 328 Gudrun at AstDyS-2, Asteroids—Dynamic Site
- 328 Gudrun at the JPL Small-Body Database
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