333 Badenia

333 Badenia (/bəˈdiːniə/ bə-DEE-nee-ə; prov. designation: A892 QA or 1892 A) is a large background asteroid, approximately 72 kilometers (45 miles) in diameter, located the outer region of the asteroid belt. It was discovered on 22 August 1892, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany.[1] The carbonaceous C-type asteroid has a rotation period of 9.9 hours. It was named after the historical Grand Duchy of Baden that existed until 1918, and where the discovering observatory is located.[2] Badenia was the first asteroid to receive a provisional designation.

333 Badenia
Modelled shape of Badenia from its lightcurve
Discovery [1]
Discovered byM. F. Wolf
Discovery siteHeidelberg Obs.
Discovery date22 August 1892
Designations
(333) Badenia
Pronunciation/bəˈdiːniə/
Named after
Grand Duchy of Baden
(Großherzogtum Baden)[2]
A892 QA · 1930 JD
1932 TC · 1936 QQ
1937 VB · 1950 BP1
A895 DC · A911 CA
1892 A
Orbital characteristics [3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc127.45 yr (46,551 d)
Aphelion3.6300 AU
Perihelion2.6314 AU
3.1307 AU
Eccentricity0.1595
5.54 yr (2,023 d)
20.070°
0° 10m 40.44s / day
Inclination3.7393°
353.16°
22.785°
Physical characteristics
Mean diameter
  • 69.73±2.80 km[6]
  • 72.199±0.259 km[7]
  • 78.17±1.9 km[8]
Mean density
~1.4 g/cm3[9]
9.862±0.001 h[10][11]
9.4[1][3]

    Orbit and classification

    Badenia is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[4][5] It orbits the Sun in the outer main-belt at a distance of 2.6–3.6 AU once every 5 years and 6 months (2,023 days; semi-major axis of 3.13 AU). Its orbit has an eccentricity of 0.16 and an inclination of 4° with respect to the ecliptic.[3]

    Physical characteristics

    In the Tholen classification, Badenia is a common carbonaceous C-type asteroid, though with a nosy spectrum (:).[3]

    Rotation period

    In April 2017, a rotational lightcurve of Badenia was obtained from photometric observations by Frederick Pilcher. Lightcurve analysis gave a rotation period of 9.862±0.001 hours with a brightness variation of 0.24±0.02 magnitude (U=3).[10][11]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Badenia measures between 64.01 and 78.51 kilometers in diameter and its surface has an albedo between 0.047 and 0.061.[5][6][7][8] The Collaborative Asteroid Lightcurve Link adopts the results from IRAS, that is, an albedo of 0.0475 and a diameter of 78.17 kilometers based on an absolute magnitude of 9.46.[11]

    References
    1. "333 Badenia (A892 QA)". Minor Planet Center. Retrieved 11 March 2020.
    2. Schmadel, Lutz D. (2007). "(333) Badenia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 43. doi:10.1007/978-3-540-29925-7_334. ISBN 978-3-540-00238-3.
    3. "JPL Small-Body Database Browser: 333 Badenia (A892 QA)" (2020-02-04 last obs.). Jet Propulsion Laboratory. Retrieved 11 March 2020.
    4. "Asteroid 333 Badenia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 11 March 2020.
    5. "Asteroid 333 Badenia". Small Bodies Data Ferret. Retrieved 11 March 2020.
    6. 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. (online, AcuA catalog p. 153)
    7. Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System. Bibcode:2016PDSS..247.....M. Retrieved 11 March 2020.
    8. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 11 March 2020.
    9. Krasinsky, G. A.; Pitjeva, E. V.; Vasilyev, M. V.; Yagudina, E. I. (July 2002). "Hidden Mass in the Asteroid Belt". Icarus. 158 (1): 98–105. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837. ISSN 0019-1035.
    10. Pilcher, Frederick (October 2017). "Rotation Period Determination for 46 Hestia, 118 Peitho, 333 Badenia, 356 Liguria, and 431 Nephele" (PDF). Minor Planet Bulletin. 44 (4): 294–297. Bibcode:2017MPBu...44..294P. ISSN 1052-8091.
    11. "LCDB Data for (333) Badenia". Asteroid Lightcurve Database (LCDB). Retrieved 11 March 2020.
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