1960 Guisan, provisional designation , is a carbonaceous
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 middle region of the
asteroid belt, approximately 25 kilometers in diameter.
It was discovered on 25 October 1973, by astronomer
Paul Wild at
Zimmerwald Observatory
The Zimmerwald Observatory (german: Observatorium Zimmerwald) is an astronomical observatory owned and operated by the AIUB, the Astronomical Institute of the University of Bern. Built in 1956, it is located at Zimmerwald, 10 kilometers south of B ...
near Bern, Switzerland, and named after Swiss General
Henri Guisan
Henri Guisan (; 21 October 1874 – 7 April 1960) was a Swiss army officer who held the office of the General of the Swiss Armed Forces during the Second World War. He was the fourth and the most recent man to be appointed to the rarely use ...
.
Orbit and classification
''Guisan'' orbits the Sun in the
central
Central is an adjective usually referring to being in the center of some place or (mathematical) object.
Central may also refer to:
Directions and generalised locations
* Central Africa, a region in the centre of Africa continent, also known as ...
main-belt at a distance of 2.2–2.8
AU once every 4.02 years (1,467 days). Its orbit has an
eccentricity of 0.12 and an
inclination
Orbital inclination measures the tilt of an object's orbit around a celestial body. It is expressed as the angle between a Plane of reference, reference plane and the orbital plane or Axis of rotation, axis of direction of the orbiting object ...
of 8
° with respect to the
ecliptic.
Physical characteristics
''Guisan'' has been characterized as a dark
C-type asteroid.
It has 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 8.46 hours
and a
geometric albedo of 0.04–0.05, as measured by the
IRAS
The Infrared Astronomical Satellite (Dutch: ''Infrarood Astronomische Satelliet'') (IRAS) was the first space telescope to perform a survey of the entire night sky at infrared wavelengths. Launched on 25 January 1983, its mission lasted ten mo ...
,
Akari,
WISE WISE may refer to:
Arts, entertainment, and media
* WISE (AM), a radio station licensed to Asheville, North Carolina
*WISE-FM, a radio station licensed to Wise, Virginia
* WISE-TV, a television station licensed to Fort Wayne, Indiana
Education
* ...
and
NEOWISE surveys.
Naming
This
minor planet
According to the International Astronomical Union (IAU), a minor planet is an astronomical object in direct orbit around the Sun that is exclusively classified as neither a planet nor a comet. Before 2006, the IAU officially used the term ''minor ...
was named in memory of
Henri Guisan
Henri Guisan (; 21 October 1874 – 7 April 1960) was a Swiss army officer who held the office of the General of the Swiss Armed Forces during the Second World War. He was the fourth and the most recent man to be appointed to the rarely use ...
(1874–1960), general of the Swiss army during the Second World War. He was notably from the country's smaller Swiss-French part rather than from the German-speaking part.
The official was published by the
Minor Planet Center
The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU). Founded in 1947, it operates at the Smithsonian Astrophysical Observatory.
Function
...
on 18 April 1977 ().
References
External links
Asteroid Lightcurve Database (LCDB) query form
)
Dictionary of Minor Planet Names Google books
– Observatoire de Genève, Raoul Behrend
– Minor Planet Center
*
*
{{DEFAULTSORT:Guisan
001960
Guisan
Named minor planets
19731025