Alice (
minor planet designation
A formal minor-planet designation is, in its final form, a number–name combination given to a minor planet (asteroid, centaur, trans-Neptunian object and dwarf planet but not comet). Such designation always features a leading number (catalog or ...
: 291 Alice) is a stony background
asteroid
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere.
...
from the inner region of the
asteroid belt. It was discovered by
Johann Palisa
Johann Palisa (6 December 1848 – 2 May 1925) was an Austrian astronomer, born in Troppau, Austrian Silesia, now Czech Republic. He was a prolific discoverer of asteroids, discovering 122 in all, from 136 Austria in 1874 to 1073 Gel ...
on 25 April 1890 at the
Vienna Observatory.
Photometric observations of this asteroid at the Leura Observatory in
Leura, Australia during 2006 gave a
rotation period
The rotation period of a celestial object (e.g., star, gas giant, planet, moon, asteroid) may refer to its sidereal rotation period, i.e. the time that the object takes to complete a single revolution around its axis of rotation relative to the ...
of 4.313 ± 0.002 hours and a brightness variation of 0.20 ± 0.02 in
magnitude. This result is in agreement with previous studies.
analysis indicates that Alice's pole points towards either
ecliptic coordinates (β, λ) = (55°, 65°) or (β, λ) = (55°, 245°) with a 10° uncertainty.
This gives an
axial tilt of about 35° in both cases.
References
See also
*
2037 Tripaxeptalis
2037 Tripaxeptalis, provisional designation , is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter.
It was discovered on 25 October 1973, by Swiss astronomer Paul Wild at Zimmerwald Obse ...
External links
*
*
Background asteroids
Alice
Alice may refer to:
* Alice (name), most often a feminine given name, but also used as a surname
Literature
* Alice (''Alice's Adventures in Wonderland''), a character in books by Lewis Carroll
* ''Alice'' series, children's and teen books by ...
Alice
Alice may refer to:
* Alice (name), most often a feminine given name, but also used as a surname
Literature
* Alice (''Alice's Adventures in Wonderland''), a character in books by Lewis Carroll
* ''Alice'' series, children's and teen books by ...
18900425
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