Asteroid 2006 XL5 - likely cometary origin

The orbits of asteroid 2006 XL5 and comet 75D/Kohoutek are vaguely similar:

                        a         e        i       om        w       q
       (2006 XL5) 3.723259 0.5154009 4.526352 274.0060 175.1221   1.804288
   75D/Kohoutek   3.543147 0.4963074 5.907209 269.6861 175.8017   1.784657

It is not clear to me if asteroid 2006 XL5 with a diameter about 1.6 km might be an old fragment of the lost comet that was estimated to be about 4.6 km in diameter.

I tried a backward simulation but there is no clear indication that this is the case.

What is interesting is that 2006 XL5 might have a cometary origin itself (the MOID with jupiter is about 0.16 AU).

Clones generation

I generated 100 clones of asteroid 2006 XL5 trying to achieve the same mean orbital parameters (and uncertainty).

	Clones			2006 XL5
	mean	sd		mean	sd
q	1.80428798284277	5.24177295141045e-07		1.80428796355464	5.2592e-07
e	0.515400864913161	1.29060036714178e-07		0.515400869129902	1.2918e-07
i	4.52635127581998	7.48101264185302e-06		4.52635163398884	7.4744e-06
peri	175.122110003296	0.000109392746353213		175.122116165405	0.00010898
node	274.006039830699	9.87233639993821e-05		274.006030101048	9.8249e-05
tp	2459319.93402565	0.000249555965707767		2459319.93400848	0.00024939

 

Backward simulation config parameters

Mercury6 software - package version 6 by John E. Chambers

)O+_06 Integration parameters  (WARNING: Do not delete this line!!)
) Lines beginning with `)' are ignored.
)---------------------------------------------------------------------
) Important integration parameters:
)---------------------------------------------------------------------
 algorithm (MVS, BS, BS2, RADAU, HYBRID etc) = BS
 start time (days)= 2459806.5
 stop time (days) = -1d8
 output interval (days) = 100
 timestep (days) = 0.05
 accuracy parameter=1.d-12
...

 ejection distance (AU)= 100

based on this configuration, any clone coming into the solar system from a distance greater than 100 AU is considered to have a "cometary origin".

Simulation results

75% of the clones have a cometary origin

 ddd