Related Experiment Video
Updated: Dec 20, 2025

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
LIGHTCURVE ANALYSIS OF THE NEAR-EARTH ASTEROID (138095) 2000 DK79
Brian D Warner1, Robert D Stephens2, Donald P Pray3
1Center for Solar System Studies - Palmer Divide Station, 446 Sycamore Ave., Eaton, CO 80615 USA.
Abstract:
Initial analysis of CCD photometry observations in 2013 November from two stations in California made of the near-Earth asteroid (138095) 2000 DK79 found a synodic rotation period of 5.19 h, or 4.62 rotations per Earth day. It was only after adding data from a station on the East Coast of the United States that the more accurate period of 4.243 h (5.62 rotations) was found. This case points to the value of collaborative efforts in asteroid photometry, even when the period is well less than 24 hours.
Related Concept Videos
Kepler's Second Law of Planetary Motion
While in an elliptical orbit, the total energy of the planet is conserved. Therefore, the planet slows down when it is at apogee and...
Flame Photometry: Lab
Flame Photometry: Overview
Relative Motion Analysis using Rotating Axes
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
Circular Orbits and Critical Velocity for Satellites
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...
Doppler Effect - II

