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6144 Kondojiro

Jupiter-crossing asteroid

Summary

Jupiter-crossing asteroid

Field	Value
minorplanet	yes
background	#D6D6D6
name	6144 Kondojiro
discoverer	K. Endate, K. Watanabe
discovery_site	Kitami
discovered	14 March 1994
mpc_name	(6144) Kondojiro
alt_names	, , ,
named_after	Jiro Kondo
mp_category	Jupiter-crosser asteroid
orbit_ref
epoch	13 January 2016 (JD 2457400.5)
uncertainty	0
observation_arc	22150 days (60.64 yr)
aphelion	6.47345 AU (Q)
perihelion	3.03222 AU (q)
semimajor	4.75283 AU (a)
eccentricity	0.36202 (e)
period	10.36 yr (3784.66 d)
inclination	5.88716° (i)
asc_node	117.14167° (Ω)
mean_anomaly	34.71927° (M)
arg_peri	96.127254° (ω)
moid	2.03358 AU
jupiter_moid	0.204605 AU
rotation	h
dimensions
albedo
spectral_type	D
abs_magnitude	11.6
mean_motion	/ day (n)
tisserand	2.867

6144 Kondojiro () is an asteroid discovered on 14 March 1994 by Kin Endate and Kazuro Watanabe at the Kitami Observatory in eastern Hokkaido, Japan. It is named after Jiro Kondo, a Japanese Egyptologist and professor of archaeology at Waseda University.

Orbit and classification

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 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, even though both the orbital and physical properties of 6144 Kondojiro suggest that it may be an extinct comet rather than a true asteroid. The JPL Small-Body Database lists only 33 such objects that have an observation arc greater than 30 days.

References

J. Licandro, 2015, [https://arxiv.org/abs/1510.02282 "Size and albedo distributions of asteroids in cometary orbits using WISE data"]
M. Ishiguro, 2014, [https://arxiv.org/abs/1405.2989 "Physical Properties of Asteroids in Comet-like Orbits in Infrared Asteroid Survey Catalogs"]

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

background-asteroids extinct-comets discoveries-by-kin-endate discoveries-by-kazuro-watanabe named-minor-planets jupiter-crossing-asteroids d-type-asteroids-(tholen) astronomical-objects-discovered-in-1994

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