1486 Marilyn, provisional designation , 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 regions of the
asteroid belt, approximately 6.5 kilometers in diameter. It was discovered on 23 August 1938, by Belgian astronomer
Eugène Delporte at the
Royal Observatory of Belgium in Uccle.
The asteroid was named after Marilyn Herget, daughter of astronomer
Paul Herget.
Orbit and classification
''Marilyn'' is a non-
family asteroid from the main belt's
background population.
It orbits the Sun in the
inner
Interior may refer to:
Arts and media
* ''Interior'' (Degas) (also known as ''The Rape''), painting by Edgar Degas
* ''Interior'' (play), 1895 play by Belgian playwright Maurice Maeterlinck
* ''The Interior'' (novel), by Lisa See
* Interior de ...
asteroid belt at a distance of 1.9–2.5
AU once every 3 years and 3 months (1,191 days). Its orbit has an
eccentricity of 0.12 and an
inclination of 0
° with respect to the
ecliptic.
The body's
observation arc begins with its official discovery observation at Uccle. No
precoveries were taken.
Physical characteristics
''Marilyn'' is an assumed stony
S-type asteroid.
Rotation period
In August and September 2013, two rotational
lightcurves of ''Marilyn'' were obtained from photometric observations. Lightcurve analysis gave a well-defined
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 4.566 and 4.568 hours with a brightness variation of 0.48 and 0.42
magnitude, respectively ().
The results supersede a period of 2.2837 hours (half the previous period solution) from a fragmentary lightcurve obtained by Maurice Audejean in March 2012 ().
Spin axis
The studies have also modeled the asteroid's lightcurve, using photometric data from the Lowell Photometric Database (LPD) and other sources. Modelling gave a concurring period of 4.566945 and 4.56695 hours, respectively.
Each of the two studies also gave two spin axis in
ecliptic coordinates (λ, β): (83.0°, −57°) and (270.0°, –62.0°),
as well as (88.0°, −88°) and (267.0°, −66°).
Diameter and albedo
According to the survey carried out by the
NEOWISE mission of NASA's
Wide-field Infrared Survey Explorer, ''Marilyn'' measures between 6.13 and 6.925 kilometers in diameter and its surface has an
albedo between 0.3118 and 0.391.
The ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.18 kilometers based on an
absolute magnitude of 12.8.
Naming
This
minor planet was named after Marilyn Herget, daughter of American astronomer
Paul Herget, who
computed the body's orbit ().
Herget is also the author of ''
The Names of the Minor Planets'' first released in the 1950s.
The asteroid
1751 Herget
1751 Herget, provisional designation , is a stony Gefionian asteroid from the central region of the asteroid belt, approximately 11 kilometers in diameter.
It was discovered on 27 July 1955, by IUs Indiana Asteroid Program at Goethe Link Observ ...
was named after him.
References
External links
Asteroid Lightcurve Database (LCDB) query form
)
Dictionary of Minor Planet Names Google books
– Observatoire de Genève, Raoul Behrend
– Minor Planet Center
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{{DEFAULTSORT:Marilyn
001486
Discoveries by Eugène Joseph Delporte
Named minor planets
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