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]

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]

References

  1. ^ a b "711 Marmulla (1911 LN)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
  2. ^ a b c d Kryszczynska, A.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy & Astrophysics. 546: 51. Bibcode:2012A&A...546A..72K. doi:10.1051/0004-6361/201219199. A72.
  3. ^ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names, Springer Berlin Heidelberg, p. 67, ISBN 9783642297182.
  4. ^ Stephens, Robert D.; Warner, Brian D. (April 2020), "Main-Belt Asteroids Observed from CS3: 2019 October to December", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 47 (2): 125–133, Bibcode:2020MPBu...47..125S.
  5. ^ Alvarez-Candal, A.; et al. (December 2006), "The inner region of the asteroid Main Belt: a spectroscopic and dynamic analysis", Astronomy and Astrophysics, 459 (3): 969–976, Bibcode:2006A&A...459..969A, doi:10.1051/0004-6361:20065518.


Allikas: http://en.wikipedia.org/wiki/711_Marmulla
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