Astronomy:711 Marmulla

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711 Marmulla
Discovery
Discovered byJ. Palisa
Discovery siteVienna Obs.
Discovery date1 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 arc102.99 yr (37,618 d)
|{{{apsis}}}|helion}}2.6745 astronomical unit|AU (400.10 Gm)
|{{{apsis}}}|helion}}1.8003 AU (269.32 Gm)
2.2374 AU (334.71 Gm)
Eccentricity0.19535
Orbital period3.35 yr (1,222.4 d)
Mean anomaly65.0629°
Mean motion0° 17m 40.2s / day
Inclination6.0917°
Longitude of ascending node357.091°
300.339°
Earth MOID0.793851 AU (118.7584 Gm)
Jupiter MOID2.55306 AU (381.932 Gm)
TJupiter3.605
Physical characteristics
Rotation period2.88 ± 0.12 h (0.120 ± 0.00500 d)[2]
Absolute magnitude (H)11.7


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 astronomical unit|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. 1.0 1.1 "711 Marmulla (1911 LN)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=711. 
  2. 2.0 2.1 2.2 2.3 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. doi:10.1051/0004-6361/201219199. A72. Bibcode2012A&A...546A..72K. 
  3. Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names, Springer Berlin Heidelberg, p. 67, ISBN 9783642297182, https://books.google.com/books?id=aeAg1X7afOoC&pg=PA67. 
  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, Bibcode2020MPBu...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, doi:10.1051/0004-6361:20065518, Bibcode2006A&A...459..969A. 

External links