6144 Kondojiro
| Discovery | |
|---|---|
Synodic rotation period | 4.0±2 h[1][3] |
| 0.044±0.009[2] | |
| D[4] | |
| 11.6 | |
6144 Kondojiro (1994 EQ3) is an
Hokkaidō, Japan. It is named after Jiro Kondo, a Japanese Egyptologist and professor of archaeology at Waseda University
.
Orbit and classification
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The orbit of 6144 Kondojiro is unusual for a number of reasons, including:
- An eccentricity greater than 0.3,
- A semi-major axis between that of an outer main-belt asteroid (3.2 AU < a < 4.6 AU) and a Jupiter trojan (4.6 AU < a < 5.5 AU),
- A relatively low inclination for a Jupiter-crossing minor planet, and
- A lack of proper orbital elements due to recurring perturbations by Jupiter.
It is difficult to classify an object with such a peculiar orbit using a conventional definition. Despite this, the Minor Planet Center (MPC) lists it as a main-belt asteroid,[5] even though both the orbital and physical properties of 6144 Kondojiro suggest that it may be an extinct comet rather than a true asteroid.[4] The JPL Small-Body Database lists only 33 such objects that have an observation arc greater than 30 days.[6]
See also
References
- ^ a b "JPL Small-Body Database Browser: 6144 Kondojiro (1994 EQ3)". 14 August 2015. Retrieved 19 November 2015.
- ^ a b J. Licandro, 2015, "Size and albedo distributions of asteroids in cometary orbits using WISE data"
- ^ Behrend, Raoul. "Asteroids and comets rotation curves – (6144) Kondojiro". Geneva Observatory. Retrieved 6 January 2016.
- ^ a b M. Ishiguro, 2014, "Physical Properties of Asteroids in Comet-like Orbits in Infrared Asteroid Survey Catalogs"
- ^ "IAU Minor Planet Center - (6144) Kondojiro". Minor Planet Center. Retrieved 19 November 2015.
- ^ "JPL Small-Body Database Search Engine: orbital class (AST) and data-arc span > 30 (d)". Jet Propulsion Laboratory Solar System Dynamics. Retrieved 2 March 2018.
External links
- 6144 Kondojiro at AstDyS-2, Asteroids—Dynamic Site
- 6144 Kondojiro at the JPL Small-Body Database
