Blog Archive

Sunday, September 17, 2023

2015 BN494 and 2008 BY42

 Backward integration with Mercury6 software, integrator Bulirsch-Stoer, output every 100 days




Friday, September 8, 2023

(395103) = 2009 RA8 -- Cometary Origin ?

 Is this a quasi-Hilda object?


Clone Generation

100 clones were generated in order to have the same orbital paameters and uncertainty as the nominal asteroid

Clones Target
meansd meansd
q3.612452700839453.39064109921033e-07 3.612452649126733.4136e-07
e0.1296673397944398.11352970562344e-08 0.129667354115618.0309e-08
i8.96456437483969.73657795759391e-06 8.964564572815829.6087e-06
peri344.4877041957124.69757841212335e-05 344.4877071204454.6654e-05
node359.4695014449933.82226393976073e-05 359.4694987819763.8729e-05
tp2461090.032893970.000262107424207425 2461090.032902890.00026503

Backward Simulation

This was performed using Mercury Integrator Package Version 6 - Bulirsch-Stoer N-body algorithm - 10^8 days in the past - output every 100 days

66% of the clones entered the solar system from a distance greater than 100 AU (i.e. from the point of view of the backward simulation they were "ejected")




Monday, August 14, 2023

Tuesday, August 1, 2023

2005 UW252 and 2008 SO356

 Backward simulation based on nominal orbital parameters (Mercury6 simulator, BS integrator, output every 100 days):




Friday, May 26, 2023

2015 HB287 and 434936

Peter VanWylen noticed that these two asteroids stay very close to each other in the sky for many decades. He wondered whether they have  a common (recent) origin or it is a coincidence.

I run a Mercury6 simulation (output every 1 days) based on nominal parameters, while this is not a proof I think that the idea of a common origin should not be disregarded.