Astronomy:1019 Strackea

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1019 Strackea
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date3 March 1924
Designations
(1019) Strackea
Named afterGustav Stracke[2]
(German astronomer)
1924 QN
Minor planet categorymain-belt[1] · (inner)
Hungaria[3][4] · background[5]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc92.08 yr (33,632 days)
|{{{apsis}}}|helion}}2.0477 AU
|{{{apsis}}}|helion}}1.7756 AU
1.9117 AU
Eccentricity0.0712
Orbital period2.64 yr (965 days)
Mean anomaly316.21°
Mean motion0° 22m 22.44s / day
Inclination26.977°
Longitude of ascending node144.42°
121.85°
Physical characteristics
Dimensions7.169±0.263 km[6]
7.44±1.36 km[7]
8.37±0.7 km (IRAS:3)[8]
8.79±0.23 km[9]
Rotation period3.832 h (incorrect)[10]
4.044±0.002 h[11]
4.04659±0.00006 h[12]
4.047±0.001 h[13]
4.047±0.005 h[14]
4.05±0.01 h[12]
4.052±0.002 h[15]
Geometric albedo0.206±0.012[9]
0.2236±0.040 (IRAS:3)[8]
0.305±0.029[6]
0.39±0.13[7]
Tholen = S[1][3]
B–V = 0.953[1]
U–B = 0.513[1]
Absolute magnitude (H)12.63[1][3][6][7][8][9]


1019 Strackea, provisional designation 1924 QN, is a stony Hungaria asteroid of the inner asteroid belt, approximately 8 kilometers in diameter. It was discovered on 3 March 1924, by astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany.[16] It is named for German astronomer Gustav Stracke.[2]

Classification and orbit

Strackea is a member of the Hungaria group, a dynamical group forming the innermost dense concentration of asteroids in the Solar System.[4] It is, however, a non-family asteroid of the background population, and not a member of the (collisional) Hungaria family.[5] It orbits the Sun at a distance of 1.8–2.0 AU once every 2 years and 8 months (965 days). Its orbit has an eccentricity of 0.07 and an inclination of 27° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Heidelberg in 1924.[16]

Physical characteristics

In the Tholen classification, Strackea is a common, stony S-type asteroid.[1][3]

Lightcurve

The first valid rotational lightcurve of Strackea with a period of 4.05 hours and a brightness variation of 0.17 magnitude was obtained by French amateur astronomer Laurent Bernasconi in February 2006 ({{{1}}}).[12] Since then, several well-defined lightcurves with a period between 4.044 and 4.052 hours and an amplitude of 0.15 to 0.25 magnitude were obtained by astronomers Brian Warner,[lower-alpha 1] Richard Schmidt, as well as by the group of astronomers Pierre Antonini, Raoul Behrend, Roberto Crippa and Federico Manzini ({{{1}}}).[11][12][13][14][15]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Strackea measures between 7.169 and 8.79 kilometers in diameter and its surface has an albedo between 0.206 and 0.39.[6][7][8][9] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.2236 and a diameter of 8.37 kilometers with an absolute magnitude of 12.63.[3]

Naming

This minor planet was named after German astronomer Gustav Stracke (1887–1943), who was in charge of the minor planet department at the Berlin-based Astronomical Calculation Institute, despite his wish that he not be honored in this fashion.[2] Previously, the discoverer had circumvented Stracke's wish by accordingly naming a consecutively numbered sequence of asteroids, so that their first letters form the name "G. Stracke". These minor planets, in the number range from 1227 to 1234, were:[17]

Naming citation was first published by Paul Herget in The Names of the Minor Planets in 1955 (H 97).[2]

Notes

  1. ↑ Lightcurve plot of (1019) Strackea, Warner (2014) Palmer Divide Station. Summary figures at Center for Solar System Studies

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "JPL Small-Body Database Browser: 1019 Strackea (1924 QN)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001019. Retrieved 13 February 2017. 
  2. ↑ 2.0 2.1 2.2 2.3 Schmadel, Lutz D. (2007). "(1019) Strackea". Dictionary of Minor Planet Names – (1019) Strackea. Springer Berlin Heidelberg. p. 88. doi:10.1007/978-3-540-29925-7_1020. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 "LCDB Data for (1019) Strackea". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1019%7CStrackea. Retrieved 13 February 2017. 
  4. ↑ 4.0 4.1 Spratt, Christopher E. (April 1990). "The Hungaria group of minor planets". Journal of the Royal Astronomical Society of Canada 84: 123–131. ISSN 0035-872X. Bibcode: 1990JRASC..84..123S. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1990JRASC..84..123S. Retrieved 13 February 2017. 
  5. ↑ 5.0 5.1 "Asteroid 1019 Strackea – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1019+Strackea. Retrieved 24 October 2019. 
  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 13 February 2017. 
  7. ↑ 7.0 7.1 7.2 7.3 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T. et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal 814 (2): 13. doi:10.1088/0004-637X/814/2/117. Bibcode: 2015ApJ...814..117N. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N. Retrieved 13 February 2017. 
  8. ↑ 8.0 8.1 8.2 8.3 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. 
  9. ↑ 9.0 9.1 9.2 9.3 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)
  10. ↑ Ivanova, V. G.; Apostolovska, G.; Borisov, G. B.; Bilkina, B. I. (November 2002). "Results from photometric studies of asteroids at Rozhen National Observatory, Bulgaria". In: Proceedings of Asteroids 500: 505–508. Bibcode: 2002ESASP.500..505I. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2002ESASP.500..505I. Retrieved 13 February 2017. 
  11. ↑ 11.0 11.1 Warner, Brian D. (October 2009). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2009 March-June". The Minor Planet Bulletin 36 (4): 172–176. ISSN 1052-8091. Bibcode: 2009MPBu...36..172W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2009MPBu...36..172W. Retrieved 13 February 2017. 
  12. ↑ 12.0 12.1 12.2 12.3 Behrend, Raoul. "Asteroids and comets rotation curves – (1019) Strackea". Geneva Observatory. http://obswww.unige.ch/~behrend/page3cou.html#001019. Retrieved 13 February 2017. 
  13. ↑ 13.0 13.1 Schmidt, Richard E. (January 2015). "NIR Minor Planet Photometry from Burleith Observatory: 2014 February - June". The Minor Planet Bulletin 42 (1): 1–3. ISSN 1052-8091. Bibcode: 2015MPBu...42....1S. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42....1S. Retrieved 13 February 2017. 
  14. ↑ 14.0 14.1 Warner, Brian D. (July 2011). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2010 December- 2011 March". The Minor Planet Bulletin 38 (3): 142–149. ISSN 1052-8091. Bibcode: 2011MPBu...38..142W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38..142W. Retrieved 13 February 2017. 
  15. ↑ 15.0 15.1 Warner, Brian D. (July 2014). "Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 January-March". The Minor Planet Bulletin 41 (3): 144–155. ISSN 1052-8091. Bibcode: 2014MPBu...41..144W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41..144W. Retrieved 13 February 2017. 
  16. ↑ 16.0 16.1 "1019 Strackea (1924 QN)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1019. Retrieved 13 February 2017. 
  17. ↑ Schmadel, Lutz D. (2007). "(1234) Elyna". Dictionary of Minor Planet Names – (1234) Elyna. Springer Berlin Heidelberg. pp. 102–103. doi:10.1007/978-3-540-29925-7_1235. ISBN 978-3-540-00238-3. 

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