1219 Britta

1219 Britta, provisional designation 1932 CJ, is a stony background asteroid from the inner regions of the asteroid belt, approximately 11 kilometers (7 miles) in diameter. It was discovered on 6 February 1932, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southern Germany.[1] The likely elongated S-type asteroid has a rotation period of 5.57 hours.[4] Any reference of its name to a person is unknown.[2]

1219 Britta
Shape model of Britta from its lightcurve
Discovery [1]
Discovered byM. F. Wolf
Discovery siteHeidelberg Obs.
Discovery date6 February 1932
Designations
(1219) Britta
Named after
unknown [2]
1932 CJ · 1947 XG
1975 FE · A904 SB
A915 BD
main-belt [1][3] · (inner)
Flora [4] · background [5]
Orbital characteristics [3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc113.51 yr (41,461 d)
Aphelion2.4883 AU
Perihelion1.9390 AU
2.2136 AU
Eccentricity0.1241
3.29 yr (1,203 d)
131.11°
0° 17m 57.48s / day
Inclination4.4135°
42.543°
23.720°
Physical characteristics
Mean diameter
9.86±0.34 km[6]
11.43±0.9 km[7]
11.76±0.30 km[8]
5.573±0.001 h[9]
5.574±0.003 h[10]
5.5750±0.0005 h[11]
5.575±0.001 h[12]
5.575 h[13]
5.575 h[14]
5.57556±0.00001 h[15]
5.57557±0.00002 h[16]
0.223±0.013[8]
0.2267±0.040[7]
0.2629 (derived)[4]
0.346±0.041[6]
S (S3OS2)[17]
B–V = 0.913[3]
U–B = 0.514[3]
11.7[3]
11.80[4][6]
11.94[7][8]

    Orbit and classification

    Britta is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[5] Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main-belt.[4]

    It orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 3 months (1,203 days; semi-major axis of 2.21 AU). Its orbit has an eccentricity of 0.12 and an inclination of 4° with respect to the ecliptic.[3]

    The asteroid was first observed as A904 SB at Heidelberg Observatory in September 1904. The body's observation arc begins with its official discovery observation at Heidelberg in February 1932.[1]

    Naming

    This minor planet is named after a common German female name. Any reference of this name to a person or occurrence is unknown.[2]

    Unknown meaning

    Among the many thousands of named minor planets, Britta is one of 120 asteroids, for which no official naming citation has been published. All of these low-numbered asteroids have numbers between 164 Eva and 1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth (also see category).[18]

    Physical characteristics

    Britta has been characterized as a stony S-type asteroid in both the Tholen- and SMASS-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2).[17]

    Rotation period

    Several rotational lightcurves[lower-alpha 1] of Britta have been obtained from photometric observations since the 1980s.[9][10][11][12][13][14] The consolidated lightcurve analysis results give a rotation period of 5.575 hours with a brightness amplitude between 0.48 and 0.75 magnitude, indicative of an elongated shape (U=3).[4]

    Spin axis

    Modeled photometric data from the Lowell Photometric Database (LPD) and the robotic BlueEye600 Observatory, gave a concurring period of 5.57556 and 5.57557 hours, respectively.[15][16] Both studies determined two spin axes of (72.0°, −66.0°) and (241.0°, −66.0°), as well as (61.0°, −2.0°) and (223.0°, −68.0°) in ecliptic coordinates (λ, β).[15][16]

    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, Britta measures between 9.860 and 11.76 kilometers in diameter and its surface has an albedo between 0.223 and 0.346.[6][7][8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.2629 and a diameter of 11.31 kilometers based on an absolute magnitude of 11.8.[4]

    Notes
    1. Lightcurve plot of (1219) Britta by R. D. Stephens (2014): rotation period 5.573±0.001 hours. 474 data points. Quality Code of 3. Summary figures at the LCDB and Center for Solar System Studies – CS3 Lightcurves Page

    References
    1. "1219 Britta (1932 CJ)". Minor Planet Center. Retrieved 11 January 2018.
    2. Schmadel, Lutz D. (2007). "(1219) Britta". Dictionary of Minor Planet Names – (1219) Britta. Springer Berlin Heidelberg. p. 102. doi:10.1007/978-3-540-29925-7_1220. ISBN 978-3-540-00238-3.
    3. "JPL Small-Body Database Browser: 1219 Britta (1932 CJ)" (2018-03-27 last obs.). Jet Propulsion Laboratory. Retrieved 3 May 2018.
    4. "LCDB Data for (1219) Britta". Asteroid Lightcurve Database (LCDB). Retrieved 3 May 2018.
    5. "Asteroid 1219 Britta – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 28 October 2019.
    6. 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. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 11 January 2018.
    7. 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 22 October 2019.
    8. 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 17 October 2019. (online, AcuA catalog p. 153)
    9. Stephens, Robert D. (July 2014). "Asteroids Observed from CS3: 2014 January - March". The Minor Planet Bulletin. 41 (3): 171–175. Bibcode:2014MPBu...41..171S. ISSN 1052-8091. Retrieved 11 January 2018.
    10. Behrend, Raoul. "Asteroids and comets rotation curves – (1219) Britta". Geneva Observatory. Retrieved 11 January 2018.
    11. Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; Ivanova, V.; Apostolovska, G.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy and Astrophysics. 546: 51. Bibcode:2012A&A...546A..72K. doi:10.1051/0004-6361/201219199. Retrieved 11 January 2018.
    12. Klinglesmith, Daniel A., III; Hanowell, Jesse; Risley, Ethan; Turk, Janek; Vargas, Angelica; Warren, Curtis Alan (July 2014). "Lightcurves for Inversion Model Candidates". The Minor Planet Bulletin. 41 (3): 139–143. Bibcode:2014MPBu...41..139K. ISSN 1052-8091. Retrieved 11 January 2018.
    13. Binzel, R. P.; Cochran, A. L.; Barker, E. S.; Tholen, D. J.; Barucci, A.; di Martino, M.; et al. (July 1987). "Coordinated observations of asteroids 1219 Britta and 1972 Yi Xing". Icarus. 71 (1): 148–158. Bibcode:1987Icar...71..148B. doi:10.1016/0019-1035(87)90169-2. ISSN 0019-1035. Retrieved 11 January 2018.
    14. Pilcher, Frederick; Binzel, R. P.; Tholen, D. J. (March 1985). "Rotations of 1168 Brandia and 1219 Britta". The Minor Planet Bulletin. 12: 10. Bibcode:1985MPBu...12...10P. Retrieved 11 January 2018.
    15. Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv:1601.02909. Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573. Retrieved 11 January 2018.
    16. Durech, Josef; Hanus, Josef; Broz, Miroslav; Lehký, Martin; Behrend, Raoul; Antonini, Pierre; et al. (April 2018). "Shape models of asteroids based on lightcurve observations with BlueEye600 robotic observatory". Icarus. 304: 101–109. arXiv:1707.03637. Bibcode:2018Icar..304..101D. doi:10.1016/j.icarus.2017.07.005.
    17. "Asteroid 1219 Britta – Asteroid Taxonomy V6.0". Small Bodies Data Ferret. Retrieved 28 October 2019.
    18. Schmadel, Lutz D. (2007). "Appendix 11 – Minor Planet Names with Unknown Meaning". Dictionary of Minor Planet Names – Fifth Revised and Enlarged revision. Springer Berlin Heidelberg. pp. 927–929. ISBN 978-3-540-00238-3.

    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.