Astronomy:1081 Reseda

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1081 Reseda
001081-asteroid shape model (1081) Reseda.png
Modelled shape of Reseda from its lightcurve
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date31 August 1927
Designations
(1081) Reseda
Pronunciation/rɪˈsiːdə/[6]
Named afterResēda (mignonette)
(herbaceous plant)[2]
1927 QF · 1949 UA1
1975 LS
Minor planet category
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc89.85 yr (32,816 days)
|{{{apsis}}}|helion}}3.5567 AU
|{{{apsis}}}|helion}}2.6505 AU
3.1036 AU
Eccentricity0.1460
Orbital period5.47 yr (1,997 days)
Mean anomaly167.25°
Mean motion0° 10m 49.08s / day
Inclination4.2029°
Longitude of ascending node30.443°
7.5205°
Physical characteristics
Dimensions31.60±11.05 km[7]
35.66±0.70 km[8]
37.03±8.13 km[9]
37.810±0.219 km[10]
37.89±0.46 km[11]
37.97 km (derived)[12]
40.462±0.470 km[13]
Rotation period7.3002±0.0006 h[14]
7.30136±0.00001 h[15]
Pole ecliptic latitude
  • (92.0°, −69.0°) (λ1/β1)[5]
  • (256.0°, −76.0°) (λ2/β2)[5]
Geometric albedo0.0326±0.0026[13]
0.042±0.002[8]
0.043±0.006[10]
0.0488 (derived)[12]
0.049±0.008[11]
0.06±0.02[9]
0.09±0.07[7]
C (assumed)[12]
Absolute magnitude (H)11.00[12][7][11] · 11.1[1] · 11.16[9] · 11.30[8][13]


1081 Reseda (prov. designation: 1927 QF) is a dark background asteroid from the outer regions of the asteroid belt. It was discovered on 31 August 1927, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[3] The asteroid has a rotation period of 7.3 hours and measures approximately 37 kilometers (23 miles) in diameter. It was named after the herbaceous plant Reseda.[2]

Orbit and classification

Reseda is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[4][5] It orbits the Sun in the outer asteroid belt at a distance of 2.7–3.6 AU once every 5 years and 6 months (1,997 days; semi-major axis of 3.10 AU). Its orbit has an eccentricity of 0.15 and an inclination of 4° with respect to the ecliptic.[1] The body's observation arc begins at Heidelberg in September 1927, or 26 days after its official discovery observation.[3]

Naming

This minor planet was named after the herbaceous plant Reseda (also known as "weld", "dyer's rocket" and "bastard rocket") a genus of Old World herbs of the mignonette family. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 102).[2]

Reinmuth's flowers

Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between (1009) and (1200). This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[16]

Physical characteristics

Reseda is an assumed carbonaceous C-type asteroid.[12]

Rotation period

In August 2008, a rotational lightcurve of Reseda was obtained from photometric observations. Lightcurve analysis gave a well-defined rotation period of 7.3002 hours with a brightness amplitude of 0.34 magnitude ({{{1}}}).[14]

Poles

A 2016-published lightcurve, using modeled photometric data from the Lowell Photometric Database, gave a concurring period of 7.30136 hours, as well as two spin axis of (92.0°, −69.0°) and (256.0°, −76.0°) in ecliptic coordinates (λ, β).[15]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Reseda measures between 31.60 and 40.462 kilometers in diameter and its surface has an albedo between 0.0326 and 0.09.[7][8][9][10][11][13] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0488 and a diameter of 37.97 kilometers based on an absolute magnitude of 11.0.[12]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 "JPL Small-Body Database Browser: 1081 Reseda (1927 QF)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001081. Retrieved 28 November 2017. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1081) Reseda". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 92. doi:10.1007/978-3-540-29925-7_1082. ISBN 978-3-540-00238-3. https://archive.org/details/dictionaryminorp00schm. 
  3. ↑ 3.0 3.1 3.2 "1081 Reseda (1927 QF)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1081. Retrieved 28 November 2017. 
  4. ↑ 4.0 4.1 "Asteroid 1081 Reseda – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1081. 
  5. ↑ 5.0 5.1 5.2 5.3 "Asteroid 1081 Reseda". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1081+Reseda. Retrieved 13 March 2020. 
  6. ↑ reseda (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=reseda  (Subscription or UK public library membership required.)
  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. 
  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 9.2 9.3 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T. et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal 152 (3): 12. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N. 
  10. ↑ 10.0 10.1 10.2 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R. et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal 791 (2): 11. doi:10.1088/0004-637X/791/2/121. Bibcode: 2014ApJ...791..121M. 
  11. ↑ 11.0 11.1 11.2 11.3 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. 
  12. ↑ 12.0 12.1 12.2 12.3 12.4 12.5 "LCDB Data for (1081) Reseda". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1081%7CReseda. Retrieved 28 November 2017. 
  13. ↑ 13.0 13.1 13.2 13.3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. 
  14. ↑ 14.0 14.1 Yankov, Arten; Ditteon, Richard (January 2009). "Lightcurves and Periods for Asteroids 1081 Reseda 2117 Danmark, 2315 Czechoslovakia, 2871 Schober, 6392 Takashimizuno, and (6409) 1992 VC". The Minor Planet Bulletin 36 (1): 3–4. ISSN 1052-8091. Bibcode: 2009MPBu...36....3Y. 
  15. ↑ 15.0 15.1 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. 
  16. ↑ Schmadel, Lutz D. (2007). "(1054) Forsytia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 90. doi:10.1007/978-3-540-29925-7_1055. ISBN 978-3-540-00238-3. https://archive.org/details/dictionaryminorp00schm. 

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