6144 Kondojiro (1994 EQ3) is an asteroid discovered on March 14, 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.
Discovery | |
---|---|
Discovered by | K. Endate, K. Watanabe |
Discovery site | Kitami |
Discovery date | 14 March 1994 |
Designations | |
(6144) Kondojiro | |
Named after | Jiro Kondo |
1994 EQ3, 1937 JF, 1937 JQ, 1984 FW1 | |
Jupiter-crosser asteroid | |
Orbital characteristics[1] | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 0 | |
Observation arc | 22150 days (60.64 yr) |
Aphelion | 6.47345 AU (968.414 Gm) (Q) |
Perihelion | 3.03222 AU (453.614 Gm) (q) |
4.75283 AU (711.013 Gm) (a) | |
Eccentricity | 0.36202 (e) |
10.36 yr (3784.66 d) | |
34.71927° (M) | |
0° 5m 42.435s / day (n) | |
Inclination | 5.88716° (i) |
117.14167° (Ω) | |
96.127254° (ω) | |
Earth MOID | 2.03358 AU (304.219 Gm) |
Jupiter MOID | 0.204605 AU (30.6085 Gm) |
TJupiter | 2.867 |
Physical characteristics | |
Dimensions | 32.9±5.1 km[2] |
4.0±2 h[1][3] | |
0.044±0.009[2] | |
D[4] | |
11.6 | |
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,[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]