Astronomy:1219 Britta

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1219 Britta
001219-asteroid shape model (1219) Britta.png
Shape model of Britta from its lightcurve
Discovery[1]
Discovered byM. F. Wolf
Discovery siteHeidelberg Obs.
Discovery date6 February 1932
Designations
(1219) Britta
Named afterunknown[2]
1932 CJ · 1947 XG
1975 FE · A904 SB
A915 BD
Minor planet categorymain-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)
|{{{apsis}}}|helion}}2.4883 AU
|{{{apsis}}}|helion}}1.9390 AU
2.2136 AU
Eccentricity0.1241
Orbital period3.29 yr (1,203 d)
Mean anomaly131.11°
Mean motion0° 17m 57.48s / day
Inclination4.4135°
Longitude of ascending node42.543°
23.720°
Physical characteristics
Mean diameter9.86±0.34 km[6]
11.43±0.9 km[7]
11.76±0.30 km[8]
Rotation period5.573±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]
Geometric albedo0.223±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]
Absolute magnitude (H)11.7[3]
11.80[4][6]
11.94[7][8]


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]

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.[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 ({{{1}}}).[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. ↑ 1.0 1.1 1.2 1.3 Cite error: Invalid <ref> tag; no text was provided for refs named MPC-object
  2. ↑ 2.0 2.1 2.2 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. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "JPL Small-Body Database Browser: 1219 Britta (1932 CJ)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001219. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 "LCDB Data for (1219) Britta". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1219%7CBritta. 
  5. ↑ 5.0 5.1 "Asteroid 1219 Britta – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1219. 
  6. ↑ 6.0 6.1 6.2 6.3 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. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 11 January 2018. 
  7. ↑ 7.0 7.1 7.2 7.3 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. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 22 October 2019. 
  8. ↑ 8.0 8.1 8.2 8.3 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. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U.  (online, AcuA catalog p. 153)
  9. ↑ 9.0 9.1 Stephens, Robert D. (July 2014). "Asteroids Observed from CS3: 2014 January - March". The Minor Planet Bulletin 41 (3): 171–175. ISSN 1052-8091. Bibcode: 2014MPBu...41..171S. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41..171S. Retrieved 11 January 2018. 
  10. ↑ 10.0 10.1 Behrend, Raoul. "Asteroids and comets rotation curves – (1219) Britta". Geneva Observatory. http://obswww.unige.ch/~behrend/page3cou.html#001219. 
  11. ↑ 11.0 11.1 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. doi:10.1051/0004-6361/201219199. Bibcode: 2012A&A...546A..72K. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A..72K. Retrieved 11 January 2018. 
  12. ↑ 12.0 12.1 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. ISSN 1052-8091. Bibcode: 2014MPBu...41..139K. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41..139K. Retrieved 11 January 2018. 
  13. ↑ 13.0 13.1 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. doi:10.1016/0019-1035(87)90169-2. ISSN 0019-1035. Bibcode: 1987Icar...71..148B. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1987Icar...71..148B. Retrieved 11 January 2018. 
  14. ↑ 14.0 14.1 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. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1985MPBu...12...10P. Retrieved 11 January 2018. 
  15. ↑ 15.0 15.1 15.2 Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics 587: 6. doi:10.1051/0004-6361/201527573. Bibcode: 2016A&A...587A..48D. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D. Retrieved 11 January 2018. 
  16. ↑ 16.0 16.1 16.2 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. doi:10.1016/j.icarus.2017.07.005. Bibcode: 2018Icar..304..101D. 
  17. ↑ 17.0 17.1 "Asteroid 1219 Britta – Asteroid Taxonomy V6.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1219+Britta#Asteroid%201219%20BrittaEAR-A-5-DDR-TAXONOMY-V6.0. 
  18. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named DOMPN-unknown

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