- 349 Dembowska
Minor Planet | name=349 Dembowska
discoverer=Auguste Charlois
discovery_date=December 9 ,1892
designations=1892 T
category=Main belt
epoch=30 January ,2005 (JD 2453400.5)
semimajor=437.812 Gm (2.927 AU)
perihelion=399.743 Gm (2.672 AU)
aphelion=475.88 Gm (3.181 AU)
eccentricity=0.087
period=1828.662 d (5.00 a)
inclination=8.256°
asc_node=32.5°
arg_peri=347.171°
mean_anomaly=198.148°
speed=17.41 km/s
dimensions=~140 kmcite web
title=JPL Small-Body Database Browser: 349 Dembowska (1892 T)
url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=349
accessdate=2008-05-02]
mass="unknown"
density="unknown"
gravity="unknown"
escape_velocity="unknown"
rotation=4.701207 ± 0.000058 h
spectral_class=R
abs_mag=5.93
albedo=0.384 (Bright)
temperature=~148 KAsteroid 349 Dembowska is named in honor of the Baron
Hercules Dembowski , an Italian astronomer who made significant contributions to research on double and multiple stars. The asteroid was discovered over a century ago onDecember 9 ,1892 , by the French astronomerAuguste Charlois while working at the observatory inNice , France. [Charlois, A.; [http://articles.adsabs.harvard.edu/full/1893AN....132..175C "Benennung von kleinen Planeten"] ,Astronomische Nachrichten , Vol. 132, No. 3155, p. 175] Located just prior to the prominent 7:3 resonance with Jupiter, 349 Dembowska is among the larger asteroids in the main belt with an estimated diameter of ~140 km.Majaess D. J., Tanner J., Savoy J., Sampson B. (2008). [http://www.minorplanetobserver.com/mpb/MPB%2035-2.pdf "349 Dembowska: A Minor Study of its Shape and Parameters"] , Minor Planet Bulletin, 35, 88] It has a rotational period of 4.7012 hours, and is classified as an R-Type asteroid due to the presence of strong absorption lines in olivine and pyroxene with little or no metals.349 Dembowska is a large
main belt asteroid with an unusually high albedo of 0.384. Of the asteroids with a diameter greater than 75 km, only4 Vesta has a higher known albedo.cite web
title=Asteroid Albedos (JPG)
publisher= [http://ssd.jpl.nasa.gov/sbdb_query.cgi JPL Small-Body Database Search Engine]
url=http://home.comcast.net/~kpheider/albedo.jpg
accessdate=2008-05-02]It is classified as an R-type asteroid and may have undergone partial melting/differentiation. [ [http://www.aas.org/publications/baas/v37n3/dps2005/618.htm Expanding the Spectral Compositional Information of Asteroid 349 Dembowska] ]
Dembowska and
16 Psyche have orbits that repeat themselves almost exactly every five years in respect to their position to the Sun and Earth.There was on occultation on
October 31 , 2006, [cite web
url=http://occsec.wellington.net.nz/planet/2006/updates/061031_349_5642_u.htm
title=OCCULTATION BY (349) DEMBOWSKA - 2006 OCT 31
publisher=Royal Astronomical Society of New Zealand] and onDecember 5 ,2007 .cite web
url=http://mpocc.astro.cz/2007/a07_12054.pdf
title=349 Dembowska – UCAC2 42014653 (Occultation 2007-12-05 22:43UT)
accessdate=2007-09-22]References
External links
* [http://www.cfa.harvard.edu/iau/Ephemerides/Bright/2007/00349_1.html (349) Dembowska--Daily Ephemeris for 2007]
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=349;orb=1 Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=349 Ephemeris]
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