1019 Strackea

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]

1019 Strackea
Discovery [1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date3 March 1924
Designations
(1019) Strackea
Named after
Gustav Stracke [2]
(German astronomer)
1924 QN
main-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)
Aphelion2.0477 AU
Perihelion1.7756 AU
1.9117 AU
Eccentricity0.0712
2.64 yr (965 days)
316.21°
0° 22m 22.44s / day
Inclination26.977°
144.42°
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]
3.832 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]
0.206±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]
12.63[1][3][6][7][8][9]

    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 (U=2).[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 (U=3/3-/3-/3/3).[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. "JPL Small-Body Database Browser: 1019 Strackea (1924 QN)" (2016-04-02 last obs.). Jet Propulsion Laboratory. Retrieved 13 February 2017.
    2. 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. "LCDB Data for (1019) Strackea". Asteroid Lightcurve Database (LCDB). Retrieved 13 February 2017.
    4. Spratt, Christopher E. (April 1990). "The Hungaria group of minor planets". Journal of the Royal Astronomical Society of Canada. 84: 123–131. Bibcode:1990JRASC..84..123S. ISSN 0035-872X. Retrieved 13 February 2017.
    5. "Asteroid 1019 Strackea – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 24 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 13 February 2017.
    7. 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. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 13 February 2017.
    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 22 October 2019.
    9. 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)
    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. Retrieved 13 February 2017.
    11. Warner, Brian D. (October 2009). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2009 March-June". The Minor Planet Bulletin. 36 (4): 172–176. Bibcode:2009MPBu...36..172W. ISSN 1052-8091. Retrieved 13 February 2017.
    12. Behrend, Raoul. "Asteroids and comets rotation curves – (1019) Strackea". Geneva Observatory. Retrieved 13 February 2017.
    13. Schmidt, Richard E. (January 2015). "NIR Minor Planet Photometry from Burleith Observatory: 2014 February - June". The Minor Planet Bulletin. 42 (1): 1–3. Bibcode:2015MPBu...42....1S. ISSN 1052-8091. Retrieved 13 February 2017.
    14. 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. Bibcode:2011MPBu...38..142W. ISSN 1052-8091. Retrieved 13 February 2017.
    15. Warner, Brian D. (July 2014). "Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 January-March". The Minor Planet Bulletin. 41 (3): 144–155. Bibcode:2014MPBu...41..144W. ISSN 1052-8091. Retrieved 13 February 2017.
    16. "1019 Strackea (1924 QN)". Minor Planet Center. 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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