Wikipedia

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
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

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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

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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

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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.[18]

Physical characteristics

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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

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Several rotational lightcurves[a] 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

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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

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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

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  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

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  1. ^ a b c d "1219 Britta (1932 CJ)". Minor Planet Center. Retrieved 11 January 2018.
  2. ^ a b c 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. ^ a b c d e f "JPL Small-Body Database Browser: 1219 Britta (1932 CJ)" (2018-03-27 last obs.). Jet Propulsion Laboratory. Retrieved 3 May 2018.
  4. ^ a b c d e f g "LCDB Data for (1219) Britta". Asteroid Lightcurve Database (LCDB). Retrieved 3 May 2018.
  5. ^ a b "Asteroid 1219 Britta – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 28 October 2019.
  6. ^ a b c d 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. ^ a b c d 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. ^ a b c d 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)
  9. ^ a b 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. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1219) Britta". Geneva Observatory. Retrieved 11 January 2018.
  11. ^ a b 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. ^ a b 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. ^ a b 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. ^ a b 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. ^ a b c 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. ^ a b c 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. ^ a b "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.
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