4524 Barklajdetolli

4524 Barklajdetolli
Discovery [1]
Discovered by L. V. Zhuravleva
Discovery site CrAO - Nauchnyj
Discovery date 8 September 1981
Designations
MPC designation 4524 Barklajdetolli
Named after
 Michael Andreas Barclay de Tolly
(Russian Field Marshal)[2]
1981 RV4 · 1935 SC1
1935 SN · 1973 FH
1988 RR6
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 61.69 yr (22,531 days)
Aphelion 2.6284 AU
Perihelion 2.0134 AU
2.3209 AU
Eccentricity 0.1324
3.54 yr (1,292 days)
224.69°
Inclination 7.2855°
177.20°
149.39°
Physical characteristics
Dimensions 13.59±0.26 km[4]
12.12±0.18 km[5]
7.14 km (calculated)[3]
1069 h[6]
0.052±0.002[4]
0.100±0.010[5]
0.24 (assumed)[3]
S [3]
12.9[1][3]
12.70[5]
13.20[4]

    4524 Barklajdetolli, provisional designation 1981 RV4, is a stony asteroid and extremely slow rotator from the inner regions of the asteroid belt, roughly 10 kilometers in diameter. It was discovered on 8 September 1981, by Russian–Ukrainian female astronomer Lyudmila Zhuravleva at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula.[7]

    The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 2.0–2.6 AU once every 3 years and 6 months (1,292 days). Its orbit shows an eccentricity of 0.13 and an inclination of 7 degrees from the plane of the ecliptic.[1]

    In 2009, a photometric light-curve analysis at the U.S. Carbuncle Hill Observatory (912) on Rhode Island, gave it an exceptionally long rotation period of 1,069 hours with a high brightness amplitude of 1.26 in magnitude.[6] According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid's surface has a low albedo of 0.05 and 0.10, respectively, while the Collaborative Asteroid Lightcurve Link (CALL) assumes a much higher albedo of 0.24, which is typical for stony asteroids and identical to the albedo of the Flora family's namesake, the asteroid 8 Flora. The divergent albedos also translate into different estimates for the body's size. While the space-based surveys find a diameter of 12.1 and 13.6 kilometers, respectively, CALL calculates only 7.1 kilometers, as the higher the body's albedo (reflectivity), the smaller its diameter, for a given absolute magnitude (brightness).[3][4][5]

    The minor planet was named in memory of Russian Field Marshal and Minister of War, Michael Andreas Barclay de Tolly (1761–1818), a hero of Patriotic War of 1812 during the French invasion of Russia. His family tree had roots in Scotland. During 1810–1812 he was military minister of Russia, and, during Napoleon's invasion, he was commander-in-chief of the Russian armies for two months.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 4524 Barklajdetolli (1981 RV4)" (2015-06-18 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4524) Barklajdetolli. Springer Berlin Heidelberg. p. 389. ISBN 978-3-540-00238-3. Retrieved January 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (4524) Barklajdetolli". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
    4. 1 2 3 4 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved January 2016.
    5. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved January 2016.
    6. 1 2 Pray, Donald P.; Durkee, Russell I. (January 2010). "The Extremely Long Period of 4524 Barklajdetolli". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 37 (1): 35. Bibcode:2010MPBu...37...35P. ISSN 1052-8091. Retrieved January 2016.
    7. ↑ "4524 Barklajdetolli (1981 RV4)". Minor Planet Center. Retrieved January 2016.

    External links


    This article is issued from Wikipedia - version of the Friday, February 05, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.