471143 Dziewanna , exact: , provisional designation , is a
trans-Neptunian object in the
scattered disc, orbiting the Sun in the outermost region of the
Solar System.
It was discovered on 13 March 2010, by astronomers
Andrzej Udalski,
Scott Sheppard
Scott Sander Sheppard (born 1977) is an American astronomer and a discoverer of numerous moons, comets and minor planets in the outer Solar System.
He is an astronomer in the Department of Terrestrial Magnetism at the Carnegie Institution for Scie ...
,
Marcin Kubiak
Marcin Antoni Kubiak is a Polish astrophysicist, who obtained his professorship title on 25 April 1994. Member of Committee of Astronomy of the Polish Academy of Sciences, a member of the Optical Gravitational Lensing Experiment (OGLE), co-discove ...
and
Chad Trujillo at the
Las Campanas Observatory in Chile.
The discovery was made during the Polish
OGLE project of
Warsaw University.
Based on its absolute
magnitude and assumed
albedo, it has a diameter of approximately 470 kilometers.
It was named after
Devana
Devana ( pl, Dziewanna , la, Dzewana), Zevana ( pl, Ziewanna), less often Zievonya ( pl, Ziewonja, Zewonia) is the goddess of wild nature, forests, hunting and the moon worshiped by the Western Slavs. In the sources, she was first mentioned in th ...
(Polish form: Dziewanna), a
Slavic goddess
Slavic mythology or Slavic religion is the religious beliefs, myths, and ritual practices of the Slavs before Christianisation, which occurred at various stages between the 8th and the 13th century. The South Slavs, who likely settled in the Balk ...
of the wilderness, forests and the hunt.
Distance
The minor planet orbits the Sun at a distance of 32.6–108.3
AU once every 591 years and 4 months (215,992 days). Its orbit has an
eccentricity of 0.54 and an
inclination of 29
° with respect to the
ecliptic.
It is currently 39.1 AU from the Sun and will reach
perihelion in 2038.
A ten-million-year integration of the orbit shows that this object is in a
2:7 resonance with
Neptune
Neptune is the eighth planet from the Sun and the farthest known planet in the Solar System. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times ...
.
A first
precovery
In astronomy, precovery (short for pre-discovery recovery) is the process of finding the image of an object in images or photographic plates predating its discovery, typically for the purpose of calculating a more accurate orbit. This happens mos ...
was taken by the
Near-Earth Asteroid Tracking at
Palomar Observatory
Palomar Observatory is an astronomical research observatory in San Diego County, California, United States, in the Palomar Mountain Range. It is owned and operated by the California Institute of Technology (Caltech). Research time at the observat ...
in 2002, extending the minor planet's
observation arc by 8 years prior to its discovery observation. Since then it has been observed 143 times over 6
oppositions
''Oppositions'' was an architectural journal produced by the Institute for Architecture and Urban Studies from 1973 to 1984. Many of its articles contributed to advancing architectural theory and many of its contributors became distinguished practi ...
and has an
orbit quality of 1.
Physical properties
In 2010, the thermal radiation of ''Dziewanna'' was observed by the
Herschel Space Telescope
The Herschel Space Observatory was a space observatory built and operated by the European Space Agency (ESA). It was active from 2009 to 2013, and was the largest infrared telescope ever launched until the launch of the James Webb Space Teles ...
, which allowed astronomers to estimate its diameter at about .
A
stellar occultation by ''Dziewanna'' was observed on 17 May 2019, yielding a single-
chord
Chord may refer to:
* Chord (music), an aggregate of musical pitches sounded simultaneously
** Guitar chord a chord played on a guitar, which has a particular tuning
* Chord (geometry), a line segment joining two points on a curve
* Chord ( ...
diameter of .
Published in May 2013, a rotational
lightcurve for this minor planet was obtained from
photometric observations at the discovering observatory with the 2.5-meter Irénée du Pont Telescope. It 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 hours with a brightness variation of 0.12 magnitude ().
Observations by American astronomer
Michael Brown, using the
Keck telescope
The W. M. Keck Observatory is an astronomical observatory with two telescopes at an elevation of 4,145 meters (13,600 ft) near the summit of Mauna Kea in the U.S. state
In the United States, a state is a constituent political entit ...
in March 2012, suggest that there is no satellite, and therefore no immediate means to determine its mass.
See also
*
*
References
External links
MPEC 2010 G50 : 2010 EK139 ''
Minor Planet Electronic Circular'', issued on 8 April 2010
OCKS: OGLE Carnegie Kuiper belt Survey(OCKS is a Southern sky survey searching for Kuiper-belt objects and dwarf planets)
Minor Planet Center
*
{{DEFAULTSORT:Dziewanna
471143
471143
Discoveries by Andrzej Udalski
Discoveries by Scott S. Sheppard
Discoveries by Chad Trujillo
Named minor planets
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