Physical Properties of Comets and Minor Planets
Commission 15 of the International Astronomical Union is dedicated to the Physical Study of Comets & Minor Planets.
Archival data on the physical properties of comets and minor planets are found in the PDS Asteroid/Dust Archive. This includes standard asteroid physical characteristics such as the properties of binary systems, occultation timings and diameters, masses, densities, rotation periods, surface temperatures, albedoes, spin vectors, taxonomy, and absolute magnitudes and slopes. In addition, European Asteroid Research Node (E.A.R.N.), an association of asteroid research groups, maintains a Data Base of Physical and Dynamical Properties of Near Earth Asteroids.
Most detailed information is available from Category: Asteroids visited by spacecraft and Category: Comets visited by spacecraft.
Read more about this topic: Minor Planet
Famous quotes containing the words physical, properties, comets, minor and/or planets:
“I was always a feminist, for I liked intellectual revolt as much as I disliked physical violence. On the whole, I think women have lost something precious, but have gained, immeasurably, by the passing of the old order.”
—Ellen Glasgow (1873–1945)
“A drop of water has the properties of the sea, but cannot exhibit a storm. There is beauty of a concert, as well as of a flute; strength of a host, as well as of a hero.”
—Ralph Waldo Emerson (1803–1882)
“I know
No answer to the children’s cry
Of echo’s answer and the man of frost
And ghostly comets over the raised fists.”
—Dylan Thomas (1914–1953)
“People are too apt to treat God as if he were a minor royalty.”
—Herbert Beerbohm, Sir Tree (1853–1917)
“Marriage is the clue to human life, but there is no marriage apart from the wheeling sun and the nodding earth, from the straying of the planets and the magnificence of the fixed stars.”
—D.H. (David Herbert)