Selected OrbFit impact solutions for asteroids (99942) Apophis and (144898) 2004 VD17
In: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 37, no. 2
I. Wlodarczyk
Details:
Year, pages: 2007, 69 - 82
About article:
During the Meeting on Asteroids and Comets in Europe - in May
of computations of possible impacts of (99942) Apophis and
(144898) 2004 VD17 on the Earth. These results were obtained from
computations performed with the use of OrbFit software. The
results were then compared with impact solutions presented by the
JPL Sentry System and by NEODyS CLOMON2. In all author's
computations two version of the OrbFit Software, Package: 3.3.1
and Package 3.3.2,
were used. These packages are free downloadable from
http://newton.dm.unipi.it/neodys/astinfo/orbfit/.
The influence of relativistic effects, radar observations, the
number of additional perturbing asteroids, different JPL Ephemeris
of Solar System and use of the multiple solution method were
investigated. It became apparent that the greatest influence on
computation of the exact impact solutions have relativistic
effects and the close approaches of massive asteroids with (99942)
Apophis and (144898) 2004 VD17. With the use of the free OrbFit
software and its source code almost the same results of possible
impact solutions for (99942) Apophis and for (144898) 2004 VD17
as those given on the NEODyS www page were obtained. Additionally,
it was possible to change the output format and the kind of output
results. The OrbFit is an interactive software which requires some
knowledge of celestial mechanics as authors say.
How to cite:
ISO 690:
Wlodarczyk, I. 2007. Selected OrbFit impact solutions for asteroids (99942) Apophis and (144898) 2004 VD17. In Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 37, no.2, pp. 69-82. 1335-1842.
APA:
Wlodarczyk, I. (2007). Selected OrbFit impact solutions for asteroids (99942) Apophis and (144898) 2004 VD17. Contributions of the Astronomical Observatory Skalnaté Pleso, 37(2), 69-82. 1335-1842.