755 Quintilla

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755 Quintilla
Discovery  [1]
Discovered by J. H. Metcalf
Discovery site Taunton Obs.
Discovery date6 April 1908
Designations
(755) Quintilla
Pronunciation /kwɪnˈtɪlə/ [2]
Named after
Quintilla
(Italian first name) [3]
A908 GC ·1933 UF
1908 CZ
Orbital characteristics   [4]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc 104.66 yr (38,226 d)
Aphelion 3.6182 AU
Perihelion 2.7446 AU
3.1814 AU
Eccentricity 0.1373
5.67 yr (2,073 d)
294.13°
0° 10m 25.32s / day
Inclination 3.2423°
176.67°
43.965°
Physical characteristics
Mean diameter
4.552  h [12] [13] [14] [15]

    755 Quintilla ( prov. designation:A908 GCor1908 CZ) is a metallic background asteroid from the outer regions of the asteroid belt, approximately 36 kilometers (22 miles) in diameter. It was discovered on 6 April 1908, by American astronomer Joel Metcalf at the Taunton Observatory ( 803 ) in Massachusetts, United States. [1] For its size, the M-type asteroid has a relatively short rotation period of 4.55 hours. It was named Quintilla, an Italian female first name, for no reason other than being the first asteroid name beginning with the letter "Q". [3]

    Contents

    Orbit and classification

    Quintilla is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. [5] [6] [7] It orbits the Sun in the outer asteroid belt at a distance of 2.7–3.6  AU once every 5 years and 8 months (2,073 days; semi-major axis of 3.18 AU). Its orbit has an eccentricity of 0.14 and an inclination of 3° with respect to the ecliptic. [4] The body's observation arc begins at Vienna Observatory on 1 September 1915, almost 7 years after its official discovery observation by Joel Metcalf at Taunton. [1]

    Naming

    This minor planet was named Quintilla, a name of an Italian first name, that was proposed by Arville D. Walker, secretary to the American astronomer and director of Harvard Observatory Harlow Shapley (1885–1972), as no other asteroid name began with the letter "Q" when it was named in 1926. The naming was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 76 ). [3]

    Physical characteristics

    In the Tholen classification, Quintilla is a metallic M-type asteroid. [4]

    Rotation period

    Several rotational lightcurves of Quintilla were obtained from photometric observations. Analysis of the best-rated lightcurves by Robert K. Buchheim and Donald Pray (2004), Laurent Bernasconi, Reiner Stoss, Petra Korlević, Maja Hren, Aleksandar Cikota, Ljuban Jerosimic, and Raoul Behrend (2005), as well as Joseph Masiero (2006), gave a well-defined rotation period of (4.552±0.001), (4.5516±0.0002) and (4.552±0.002) hours with a brightness variation of (0.38±0.02), (0.08±0.01) and (0.45±0.2) magnitude, respectively ( U=3/3/3 ). [12] [13] [14] In November 2018, Michael and Matthew Fauerbach obtained a period of (4.552±0.002) hours and an amplitude of (0.16±0.02) magnitude ( U=2 ). [15]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite, the Infrared Astronomical Satellite IRAS, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Quintilla measures (31.32±1.20), (36.04±2.1) and (41.210±0.655) kilometers in diameter and its surface has an albedo of (0.220±0.019), (0.1621±0.021) and (0.124±0.012), respectively. [8] [9] [10] [11]

    Alternative mean-diameter measurements published by the WISE team include (46.09±5.63 km) and (49.868±0.660 km) with corresponding albedos of (0.083±0.387) and (0.0848±0.0103). [6] [16] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1781 and a diameter of 36.16 kilometers based on an absolute magnitude of 9.7. [16]

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    References

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    2. ↑ Noah Webster (1884) A Practical Dictionary of the English Language
    3. 1 2 3 Schmadel, Lutz D. (2007). "(755) Quintilla". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 72. doi:10.1007/978-3-540-29925-7_756. ISBN   978-3-540-00238-3.
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    6. 1 2 3 "Asteroid 755 Quintilla". Small Bodies Data Ferret. Retrieved 2 June 2020.
    7. 1 2 Zappalà, V.; Bendjoya, Ph.; Cellino, A.; Farinella, P.; Froeschle, C. (1997). "Asteroid Dynamical Families". NASA Planetary Data System: EAR-A-5-DDR-FAMILY-V4.1. Retrieved 2 June 2020. (PDS main page)
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    10. 1 2 3 4 Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System. Bibcode:2016PDSS..247.....M . Retrieved 2 June 2020.
    11. 1 2 3 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv: 1406.6645 . Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121.
    12. 1 2 3 4 Buchheim, Robert K.; Pray, Donald (March 2005). "Lightcurve of 755 Quintilla" (PDF). Minor Planet Bulletin. 32 (1): 1. Bibcode:2005MPBu...32....1B. ISSN   1052-8091.
    13. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (755) Quintilla". Geneva Observatory. Retrieved 2 June 2020.
    14. 1 2 Masiero, Joseph; Jedicke, Robert; Ďurech, Josef; Gwyn, Stephen; Denneau, Larry; Larsen, Jeff (November 2009). "The Thousand Asteroid Light Curve Survey". Icarus. 204 (1): 145–171. arXiv: 0906.3339 . Bibcode:2009Icar..204..145M. doi:10.1016/j.icarus.2009.06.012. ISSN   0019-1035.
    15. 1 2 Fauerbach, Michael; Fauerbach, Matthew (April 2019). "Rotational Period Determination for Asteroids 755 Quintilla 1830 Pogson, 5076 Lebedev-Kumach, and (29153) 1998 SY2" (PDF). Minor Planet Bulletin. 46 (2): 138–139. Bibcode:2019MPBu...46..138F. ISSN   1052-8091.
    16. 1 2 "LCDB Data for (755) Quintilla". Asteroid Lightcurve Database (LCDB). Retrieved 2 June 2020.
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