711 Marmulla
Main-belt asteroid
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711 Marmulla is an asteroid belonging to the Flora family in the Main Belt.[2] It was discovered 1 March 1911 by Austrian astronomer Johann Palisa. The asteroid name may be derived from the Old High German word 'marmul', which means 'marble'.[3] This asteroid is orbiting 2.24 AU from the Sun with a period of 3.35 yr and an eccentricity (ovalness) of 0.195. The orbital plane of 711 Marmulla is inclined at an angle of 6.1° to the plane of the ecliptic.[1]
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Vienna Obs. |
| Discovery date | 1 March 1911 |
| Designations | |
| (711) Marmulla | |
| Pronunciation | /mɑːrˈmʌlə/ |
| 1911 LN; 1927 AB | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 102.99 yr (37,618 d) |
| Aphelion | 2.6745 AU (400.10 Gm) |
| Perihelion | 1.8003 AU (269.32 Gm) |
| 2.2374 AU (334.71 Gm) | |
| Eccentricity | 0.19535 |
| 3.35 yr (1,222.4 d) | |
| 65.0629° | |
| 0° 17m 40.2s / day | |
| Inclination | 6.0917° |
| 357.091° | |
| 300.339° | |
| Earth MOID | 0.793851 AU (118.7584 Gm) |
| Jupiter MOID | 2.55306 AU (381.932 Gm) |
| TJupiter | 3.605 |
| Physical characteristics | |
| 2.88 ± 0.12 h (0.120 ± 0.00500 d)[2] | |
| 11.7 | |
Photometric observations of this asteroid in 2019 resulted in a light curve showing a rotation period of 2.721±0.003 h with a brightness variation of 0.06 in magnitude. This result is consistent with a similar study earlier in the year.[4] A. Kryszczynska and associates had found a slightly longer rotation period of 2.88 hours in 2012.[2] The low amplitude of the variation suggests a nearly spherical shape.[2] The spectrum of 711 Marmulla most closely matches an A-type asteroid.[5]
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