{{Short description|Main-belt asteroid}} {{Use dmy dates|date=October 2019}} {{Infobox planet | minorplanet=yes | background=#D6D6D6 | name=266 Aline |image=266 Aline orbit on 01 Jan 2009.png |image_scale= |caption=Orbit of Aline | discoverer=Johann Palisa | discovered=17 May 1887 | mpc_name=(266) Aline | alt_names=A887 KA | mp_category=Main belt | epoch=31 July 2016 (JD 2457600.5) | semimajor={{Convert|2.80394|AU|Gm|abbr=on}} | perihelion={{Convert|2.36559|AU|Gm|abbr=on}} | aphelion={{Convert|3.24229|AU|Gm|abbr=on|lk=on}} | eccentricity=0.15633 | period=4.70 yr (1715.0 d) | inclination=13.3989° | asc_node=235.904° | arg_peri=150.489° | mean_anomaly=53.2036° | avg_speed=17.79 km/s | dimensions={{val|109.09|2.9|ul=km}}<ref name="jpldata"/><br />107.95 ± 6.62 km<ref name="Carry2012"/> | mass={{nowrap|(4.15 ± 0.42) × 10<sup>18</sup> kg<ref name="Carry2012"/>}} | density=6.29 ± 1.32 g/cm<sup>3</sup><ref name="Carry2012"/> | rotation={{Convert|13.018|h|d|abbr=on|lk=on}}<ref name="jpldata"/><br />13.02 h<ref name="Pilcher2012"/> | spectral_type=C | abs_magnitude=8.80 | albedo={{val|0.0448|0.003}} | mean_motion={{Deg2DMS|0.209919|sup=ms}} / day | orbit_ref=<ref name="jpldata">{{Cite web |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=266;cad=1 |title=266 Aline |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=11 May 2016}}</ref> | observation_arc=124.91 yr (45623 d) | uncertainty=0 }}
'''266 Aline''' is a fairly large main belt asteroid that was discovered by Johann Palisa on 17 May 1887 in Vienna and is thought to have been named after the daughter of astronomer Edmund Weiss. It is a dark C-type asteroid and is probably composed of primitive carbonaceous material. 266 Aline is orbiting close to a 5:2 mean motion resonance with Jupiter, which is located at {{val|2.824|ul=AU}}.<ref name=Hahn_et_al_1991/>
Photometric observations made in 2012 at the Organ Mesa Observatory in Las Cruces, New Mexico, produced a light curve with a period of 13.018 ± 0.001 hours and a brightness variation of 0.10 ± 0.01 in magnitude.<ref name="Pilcher2012"/>
In 2001, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.41 AU. The resulting data yielded an effective diameter of {{nowrap|109 ± 15 km}}.<ref name="icarus186_1_126"/>
==References== {{Reflist|refs= <ref name="Pilcher2012">{{Citation | first1 = Frederick | last1 = Pilcher | title = Rotation Period Determinations for 46 Hestia, 223 Rosa, 225 Henrietta, 266 Aline, 750 Oskar, and 765 Mattiaca | work = The Minor Planet Bulletin | volume = 39 | issue = 3 | pages = 171–173 |date=July 2012 | bibcode = 2012MPBu...39..171P | postscript= . }}</ref>
<ref name="Carry2012">{{Citation | first1 = B. | last1 = Carry | title = Density of asteroids | work = Planetary and Space Science | volume = 73 | pages = 98–118 |date=December 2012 | doi = 10.1016/j.pss.2012.03.009 | bibcode = 2012P&SS...73...98C | postscript= . | arxiv = 1203.4336 }} See Table 1.</ref>
<ref name="icarus186_1_126">{{citation | display-authors=1 | last1=Magri | first1=Christopher | last2=Nolan | first2=Michael C. | last3=Ostro | first3=Steven J. | last4=Giorgini | first4=Jon D. | title=A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003 | journal=Icarus | volume=186 | issue=1 | pages=126–151 | date=January 2007 | doi=10.1016/j.icarus.2006.08.018 | bibcode=2007Icar..186..126M | url=http://echo.jpl.nasa.gov/asteroids/MBAs/magri.etal.2007.mbas.pdf | accessdate=2015-04-14 | postscript=. }}</ref>
<ref name=Hahn_et_al_1991>{{citation | title=Orbital evolution studies of asteroids near the 5:2 mean motion resonance with Jupiter | last1=Hahn | first1=G. | last2=Lagerkvist | first2=C. -I. | last3=Lindgren | first3=M. | last4=Dahlgren | first4=M. | display-authors=1 | journal=Astronomy and Astrophysics | volume=246 | issue=2 | date=June 1991 | pages=603–618 | bibcode=1991A&A...246..603H | postscript=. }}</ref>
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== External links == * [http://ftp.lowell.edu/pub/elgb/astorb.html The Asteroid Orbital Elements Database] * [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html Minor Planet Discovery Circumstances] * [http://spiff.rit.edu/richmond/parallax/phot/LCSUMPUB.TXT Asteroid Lightcurve Data File] * {{AstDys|266}} * {{JPL small body}}
{{Minor planets navigator |265 Anna |number=266 |267 Tirza}} {{Small Solar System bodies}} {{Authority control}}
{{DEFAULTSORT:000266}} Category:Background asteroids Aline Aline Category:C-type asteroids (Tholen) Category:Ch-type asteroids (SMASS) 18870517
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