| image = Asteroid Milianleo Animation.gif
| image = Asteroid Milianleo Animation.gif
| image_scale =
| image_scale =
| caption = Animation of ”Milianleo” from [[Tzec Maun Observatory|Tzec Maun]]
| caption = Animation of Milianleo from [[Tzec Maun Observatory|Tzec Maun]]
| discovery_ref = <ref name=”MPC-object” />
| discovery_ref = <ref name=”MPC-object” />
| discovered = 19 February 2009
| discovered = 19 February 2009
}}
}}
”’216433 Milianleo”’, provisional designation {{mp|2009 DM|3}}, is an Aeolia [[asteroid]] from the central region of the [[asteroid belt]], approximately {{convert|1.6|km|mi|abbr=off|sigfig=1|sp=us}} in diameter. It was discovered 19 February 2009, by German amateur astronomer [[Erwin Schwab]] using a remote-controlled telescope at [[Tzec Maun Observatory]] {{Obscode|H10}} in Mayhill, New Mexico, United States. The asteroid was named after the discoverer’s son, Milian Leo Schwab.<ref name=”MPC-object” />
”’216433 Milianleo”’ provisional designation {{mp|2009 DM|3}} is an Aeolia [[asteroid]] from the central region of the [[asteroid belt]], approximately {{convert|1.6|km|mi|abbr=off|sigfig=1|sp=us}} in diameter. It was discovered 19 February 2009, by German amateur astronomer [[Erwin Schwab]] using a remote-controlled telescope at [[Tzec Maun Observatory]] {{Obscode|H10}} in Mayhill, New Mexico, United States. The asteroid was named after the discoverer’s son, Milian Leo Schwab.<ref name=”MPC-object” />
== Orbit and classification ==
== Orbit and classification ==
”Milianleo” is an attributed member of the small [[Aeolia family]] ({{small|[[FIN tbl#508|508]]}}),<ref name=”Ferret” /><ref name=”AstDys-object” /> a small [[asteroid family]] of less than 300 known members, named after its [[parent body]] and largest member, [[396 Aeolia]].<ref name=”Nesvorny-2014″ /> It orbits the Sun in the [[Kirkwood gap|central]] main–belt at a distance of 2.4–3.1 [[Astronomical unit|AU]] once every 4 years and 6 months (1,658 days; [[semi-major axis]] of 2.74 AU). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.13 and an [[orbital inclination|inclination]] of 3[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name=”jpldata” /> It was first observed as {{mp|2000 GE|16}} at [[Lincoln Laboratory ETS]] in 2000, extending the body’s [[observation arc]] by 9 years prior to its official discovery at Tzec Maun.<ref name=”MPC-object” />
Milianleo is an attributed member of the [[Aeolia family]] ({{small|[[FIN tbl#508|508]]}}),<ref name=”Ferret” /><ref name=”AstDys-object” /> a small [[asteroid family]] than 300 known members named after its [[parent body]] and largest member, [[396 Aeolia]].<ref name=”Nesvorny-2014″ /> orbits the Sun in the [[Kirkwood gap|central]] mainbelt at a distance of 2.4–3.1 [[Astronomical unit]] once every 4 years and 6 months (1,658 days; [[semi-major axis]] of 2.74 AU). has an [[orbital eccentricity|eccentricity]] of 0.13 and an [[orbital inclination|inclination]] of 3° with respect to the [[ecliptic]].<ref name=”jpldata” /> It was first observed as {{mp|2000 GE|16}} at [[Lincoln Laboratory ETS]] in 2000, extending the body’s [[observation arc]] by 9 years prior to its official discovery at Tzec Maun.<ref name=”MPC-object” />
On 25 December 2098, ”Milianleo” is expected to pass 4,449,642 [[kilometers]] from the asteroid [[704 Interamnia]].<ref name=”jpldata” /> It will pass it at a relative velocity of 7.12 kilometers per second.
On 25 December 2098, Milianleo is expected to pass 4,449,642 [[kilometers]] from the asteroid [[704 Interamnia]].<ref name=”jpldata” /> It will pass it at a relative velocity of 7.12 kilometers per second.
== Physical characteristics ==
== Physical characteristics ==
”Milianleo” is likely an [[X-type asteroid]], based on its membership to the Aeolia family.<ref name=”Nesvorny-2014″ />{{rp|23}} When using a generic magnitude-to-diameter conversion, this asteroid measures approximately 1.6 kilometers in diameter, for an [[absolute magnitude]] of 16.5,<ref name=”MPC-object” /><ref name=”jpldata” /> and an assumed [[visual geometric albedo]] of 0.17, taken from the Aeolia family’s parent body.<ref name=”h” /><ref name=”Nesvorny-2014″ />{{rp|23}} As of 2018, no rotational [[lightcurve]] of ”Milianleo” has been obtained from [[Photometry (astronomy)|photometric]] observations. The body’s [[rotation period]], [[Poles of astronomical bodies|pole]] and shape remain unknown.<ref name=”jpldata” /><ref name=”Ferret” />
Milianleo is likely an [[X-type asteroid]], based on its membership to the Aeolia family.<ref name=”Nesvorny-2014″ />{{rp|23}} When using a generic magnitude-to-diameter conversion, measures approximately 1.6 kilometers in diameter an [[absolute magnitude]] of 16.5<ref name=”MPC-object” /><ref name=”jpldata” /> and an assumed [[visual geometric albedo]] of 0. from the Aeolia family’s parent body.<ref name=”h” /><ref name=”Nesvorny-2014″ />{{rp|23}} As of 2018, no rotational [[lightcurve]] of Milianleo has been obtained from [[Photometry (astronomy)|photometric]] observations. The body’s [[rotation period]], [[Poles of astronomical bodies|pole]] and shape remain unknown.<ref name=”jpldata” /><ref name=”Ferret” />
== Naming ==
== Naming ==
This [[minor planet]] was named after Milian Leo Schwab, the first-born son of German amateur astronomer and discoverer [[Erwin Schwab]].<ref name=”MPC-object” /><ref name=”Schwab-homepage” /> The approved naming citation was published by the [[Minor Planet Center]] 4 October 2009 ({{small|[[Minor Planet Circulars|M.P.C.]] 67220}}).<ref name=”MPC-Circulars-Archive” />
This [[minor planet]] was named after Milian Leo Schwab, the first-born son of German amateur astronomer and discoverer [[Erwin Schwab]].<ref name=”MPC-object” /><ref name=”Schwab-homepage” /> The naming citation was published by the [[Minor Planet Center]] 4 October 2009 ({{small|[[Minor Planet Circulars|M.P.C.]] 67220}}).<ref name=”MPC-Circulars-Archive” />
[[File:Orbit of Milianleo, September 16.gif|320px|thumb|left|Orbit of ”Milianleo”, close to its [[perihelion]] (Sept. 2013)]]
[[File:Orbit of Milianleo, September 16.gif|320px|thumb|left|Orbit of Milianleo, close to its [[perihelion]] (Sept. 2013)]]
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Main-belt asteroid
216433 Milianleo (provisional designation 2009 DM3) is an Aeolia asteroid from the central region of the asteroid belt, approximately 1.6 kilometers (1 mile) in diameter. It was discovered 19 February 2009, by German amateur astronomer Erwin Schwab using a remote-controlled telescope at Tzec Maun Observatory (H10) in Mayhill, New Mexico, United States. The asteroid was named after the discoverer’s son, Milian Leo Schwab.[1]
Orbit and classification
[edit]
Milianleo is an attributed member of the Aeolia family (508),[3][4] a small asteroid family that has fewer than 300 known members. The family is named after its parent body and largest member, 396 Aeolia.[6] Milianleo orbits the Sun in the central main asteroid belt at a distance of 2.4–3.1 Astronomical units (AU), completing its orbit once every 4 years and 6 months (1,658 days; semi-major axis of 2.74 AU). It has an eccentricity of 0.13 and an inclination of 3° with respect to the ecliptic.[2] It was first observed as 2000 GE16 at Lincoln Laboratory ETS in 2000, extending the body’s observation arc by 9 years prior to its official discovery at Tzec Maun.[1]
On 25 December 2098, Milianleo is expected to pass 4,449,642 kilometers from the asteroid 704 Interamnia.[2] It will pass it at a relative velocity of 7.12 kilometers per second.
Physical characteristics
[edit]
Milianleo is likely an X-type asteroid, based on its membership to the Aeolia family.[6]: 23 When using a generic magnitude-to-diameter conversion, it measures approximately 1.6 kilometers in diameter when using an absolute magnitude of 16.5[1][2] and an assumed visual geometric albedo of 0.17—these values are derived from the Aeolia family’s parent body.[5][6]: 23 As of 2018, no rotational lightcurve of Milianleo has been obtained from photometric observations. The body’s rotation period, pole and shape remain unknown.[2][3]
This minor planet was named after Milian Leo Schwab, the first-born son of German amateur astronomer and discoverer Erwin Schwab.[1][7] The naming approval citation was published by the Minor Planet Center on 4 October 2009 (M.P.C. 67220).[8]
