Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000kfnt...16..519t&link_type=abstract
Kinematika i Fizika Nebesnykh Tel, vol. 16, no. 6, p. 519-525
Astronomy and Astrophysics
Astronomy
Scientific paper
The numerical modelling of asteroid brightness distribution for different scattering laws (Lambert, Lommel-Seeliger, Hapke, theoretical and empirical Akimov laws) was carried out for the purpose of determination of asteroid photocentre position. A numerical photometric model of an asteroid which considers the arbitrary i) asteroid shape, ii) albedo distribution on the surface, and iii) scattering law was used. It is shown that the photocentre displacement depends essentially on the asteroid shape, phase angle, and light scattering. The displacement may reach a value of (0.3-0.4)R, where R is asteroid's angular radius. Such displacements exceed the accuracy of space-based astrometric measurements, and they are comparable with the accuracy of ground-based observations. Therefore, the accuracy of asteroid position determinations can be noticeably improved when they are taken into account. Some practical recommendations on the determination of asteroid photocentre displacements are given.
Lupishko Dmitrij F.
Shevchenko Vasilij G.
Tungalag N.
No associations
LandOfFree
On the displacement of asteroid photocentre due to surface scattering does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the displacement of asteroid photocentre due to surface scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the displacement of asteroid photocentre due to surface scattering will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1052924