Other
Scientific paper
Oct 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dps....39.0501p&link_type=abstract
American Astronomical Society, DPS meeting #39, #5.01; Bulletin of the American Astronomical Society, Vol. 39, p.415
Other
Scientific paper
Solar radiation pressure acting on small celestial bodies in heliocentric orbit can alter rotation and cause significant orbital changes via the YORP effect. YORP has a long history. The concept of light pressure causing motion of matter in space was suggested by Kepler in the seventeenth century. After a hiatus of about 200 years a variety of different of persons have done theoretical, laboratory and observational work on the effects of radiation pressure on small celestial bodies, among them the YORP quartet of Yarkovsky, O'Keefe, Radzievskii, and Paddack. Yarkovsky suggested an irradiation and re-radiation process to cause orbital changes. Radzievskii proposed that variations in albedo across an orbiting body could cause it to spin to its bursting point. Paddack, after discussions with O'Keefe, suggested and did laboratory work to show that shape was much more important than albedo in altering the spin of small celestial objects. Rubincam and later authors such as Vokrouhlicky, Bottke, Nesvorny, Morbidelli, Scheeres, and Margot, applied YORP to the spin of small asteroids and showed it to be significant. Thanks to the work of Lowry et al., Taylor et al., and Kaasalainen et al. it now appears that YORP has now been observed to change asteroid rotation rates; in fact, the asteroid 2000 PH5 has recently been renamed YORP by the IAU. Cuk and Burns have applied YORP to the orbital evolution of binary asteroids, which they call BYORP. Lately it has been shown that if 99942 Apophis has a north-south asymmetry in its shape that it could affect whether this object poses a hazard the Earth. We expect future missions to small asteroids will routinely measure YORP and other physical properties as well as gravity, composition, and topography.
Paddack Stephen J.
Parry Rubincam David
No associations
LandOfFree
YORP: Origins and Outlook 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 YORP: Origins and Outlook, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and YORP: Origins and Outlook will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1064819