| Minorplanet: | yes |
| Background: |
|
| 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 |
| Epoch: | 13 January 2016 (JD 2457400.5) |
| Uncertainty: | 0 |
| Observation Arc: | 22150 days (60.64 yr) |
| Aphelion: | 6.47345abbr=onNaNabbr=on (Q) |
| Perihelion: | 3.03222AU (q) |
| Semimajor: | 4.75283AU (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: | 2.03358AU |
| Jupiter Moid: | 0.204605AU |
| Rotation: | h |
| Dimensions: | [1] |
| Spectral Type: | D[2] |
| 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 Hokkaidō, Japan. It is named after Jiro Kondo, a Japanese Egyptologist and professor of archaeology at Waseda University.
The orbit of 6144 Kondojiro is unusual for a number of reasons, including:
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.