astro.wikisort.org - 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]

216433 Milianleo

Animation of Milianleo from Tzec Maun
Discovery [1]
Discovered by	E. Schwab
Discovery site	Tzec Maun Obs.
Discovery date	19 February 2009
Designations
MPC designation	(216433) Milianleo
Named after	Milian Leo Schwab (discoverer's son)[1]
Alternative designations	2009 DM3 · 2000 GE16
Minor planet category	main-belt [1][2] · (middle) Aeolia [3][4]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc	16.71 yr (6,105 d)
Aphelion	3.1023 AU
Perihelion	2.3810 AU
Semi-major axis	2.7417 AU
Eccentricity	0.1316
Orbital period (sidereal)	4.54 yr (1,658 d)
Mean anomaly	326.86°
Mean motion	0° 13m 1.56s / day
Inclination	3.3499°
Longitude of ascending node	12.114°
Argument of perihelion	200.98°
Physical characteristics
Dimensions	1.6 km (est. at 0.17)[5]
Spectral type	X (est. from parent body)[6]: 23
Absolute magnitude (H)	16.5[1][2]

Orbit and classification

Milianleo is an attributed member of the small Aeolia family (508),[3][4] a small asteroid family of less than 300 known members, named after its parent body and largest member, 396 Aeolia.[6] It orbits the Sun in the central main-belt at a distance of 2.4–3.1 AU once every 4 years and 6 months (1,658 days; semi-major axis of 2.74 AU). Its orbit 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

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, this asteroid measures approximately 1.6 kilometers in diameter, for an absolute magnitude of 16.5,[1][2] and an assumed visual geometric albedo of 0.17, taken 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]

Naming

This minor planet was named after Milian Leo Schwab, the first-born son of German amateur astronomer and discoverer Erwin Schwab.[1][7] The approved naming citation was published by the Minor Planet Center 4 October 2009 (M.P.C. 67220).[8]

See also

• Cloudcroft Observatory (V29), owned by the Tzec Maun Foundation

References

External links

• Asteroid Milianleo, Erwin Schwab
• Dictionary of Minor Planet Names, Google books
• Discovery Circumstances: Numbered Minor Planets (215001)-(220000) – Minor Planet Center
• 216433 Milianleo at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 216433 Milianleo at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (216433) Milianleo

(216433) Milianleo ist ein Asteroid. Er wurde am 19. Februar 2009 von Erwin Schwab am Taunus-Observatorium des Physikalischen Vereins Frankfurt entdeckt.

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- [en] 216433 Milianleo

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