1106 Cydonia

1106 Cydonia
Discovery
Discovered by	K. Reinmuth
Discovery site	Heidelberg Obs.
Discovery date	5 February 1929
Designations
MPC designation	(1106) Cydonia
Pronunciation	/saɪˈdoʊniə/
Named after	Cydonia (quince); (flowering plant)
Alternative designations	1929 CW
Minor planet category	main-belt · (middle); Eunomia
Orbital characteristics
	Epoch 23 March 2018 (JD 2458200.5)
	Uncertainty parameter 0
Observation arc	88.41 yr (32,292 days)
Aphelion	2.9246 AU
Perihelion	2.2673 AU
Semi-major axis	2.5959 AU
Eccentricity	0.1266
Orbital period (sidereal)	4.18 yr (1,528 days)
Mean anomaly	71.500°
Mean motion	0° 14m 8.16s / day
Inclination	13.065°
Longitude of ascending node	328.26°
Argument of perihelion	230.23°
Physical characteristics
Mean diameter	12.140±0.093 km; 12.818±0.182 km; 12.95±0.94 km; 13.26 km (calculated)
Synodic rotation period	2.6700±0.0181 h; 2.679±0.001 h
Geometric albedo	0.1719±0.0182; 0.21 (assumed); 0.241±0.018
Spectral type	SMASS = S
Absolute magnitude (H)	11.60 · 11.7 · 11.8 · 12.0 · 12.06±0.28

1106 Cydonia (/saɪˈdoʊniə/), provisional designation 1929 CW, is a Eunomian asteroid from the central regions of the asteroid belt, approximately 13 kilometers (8 miles) in diameter. It was discovered on 5 February 1929, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid was named for the fruit-bearing tree Cydonia (quince). The S-type asteroid has a relatively short rotation period of 2.7 hours.

Orbit and classification

Cydonia is a member of the Eunomia family (502), a prominent family of stony asteroids and the largest one in the intermediate main belt with more than 5,000 members. It orbits the Sun in the central asteroid belt at a distance of 2.3–2.9 AU once every 4 years and 2 months (1,528 days; semi-major axis 2.60 AU). Its orbit has an eccentricity of 0.13 and an inclination of 13° with respect to the ecliptic. The body's observation arc begins with its first and official discovery observation at Heidelberg in February 1929.

Physical characteristics

In the SMASS classification, Cydonia is a stony S-type asteroid, in-line with the Eunomia family's overall spectral type.

Rotation period

In December 2015, a rotational lightcurve of Cydonia was obtained from photometric observations by astronomers at the Etscorn Observatory (719) in New Mexico, United States. Lightcurve analysis gave a well-defined rotation period of 2.679 hours with a brightness variation of 0.28 magnitude (U=3). In April 2017, Spanish astronomers at Puçol Observatory (J42) and other stations of the APTOG-network measured a similar period of 2.6700 hours and an amplitude of 0.10 magnitude (U=2+).

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Cydonia measures between 12.140 and 12.95 kilometers in diameter and its surface has an albedo between 0.1719 and 0.241.

The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 – derived from 15 Eunomia, the family's parent body and namesake – and calculates a diameter of 13.26 kilometers based on an absolute magnitude of 11.7.

Naming

This minor planet was named after the genus Cydonia in the family Rosaceae, with the fruit-bearing quince tree as its only member. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 104).

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).

References

^ ^a ^b ^c ^d ^e ^f "JPL Small-Body Database Browser: 1106 Cydonia (1929 CW)" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved 28 February 2018.
^ "Cydonia". Merriam-Webster.com Dictionary. Merriam-Webster.
^ ^a ^b ^c Schmadel, Lutz D. (2007). "(1106) Cydonia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 94. doi:10.1007/978-3-540-29925-7_1107. ISBN 978-3-540-00238-3.
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ "LCDB Data for (1106) Cydonia". Asteroid Lightcurve Database (LCDB). Retrieved 28 February 2018.
^ ^a ^b "Asteroid 1106 Cydonia – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
^ ^a ^b 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. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121.
^ ^a ^b ^c ^d 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
^ ^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.
^ ^a ^b Aznar Macias, Amadeo (July 2017). "Density and Axis-size Relationship of Five Main-belt Asteroids: 2017 January - March". The Minor Planet Bulletin. 44 (3): 276–279. Bibcode:2017MPBu...44..276A. ISSN 1052-8091. Retrieved 28 February 2018.
^ ^a ^b Klinglesmith, Daniel A. III; Hendrickx, Sebastian; Madden, Karl; Montgomery, Samuel (July 2016). "Asteroid Lightcurves from Estcorn Observatory". The Minor Planet Bulletin. 43 (3): 234–239. Bibcode:2016MPBu...43..234K. ISSN 1052-8091. Retrieved 28 February 2018.
^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007.
^ ^a ^b "1106 Cydonia (1929 CW)". Minor Planet Center. Retrieved 28 February 2018.
^ ^a ^b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 978-0-8165-3213-1.
^ 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.

External links

Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
1106 Cydonia at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
1106 Cydonia at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

[jpldata-1] ^ ^a ^b ^c ^d ^e ^f "JPL Small-Body Database Browser: 1106 Cydonia (1929 CW)" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved 28 February 2018.

[2] "Cydonia". Merriam-Webster.com Dictionary. Merriam-Webster.

[springer-3] Schmadel, Lutz D. (2007). "(1106) Cydonia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 94. doi:10.1007/978-3-540-29925-7_1107. ISBN 978-3-540-00238-3.

[lcdb-4] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ "LCDB Data for (1106) Cydonia". Asteroid Lightcurve Database (LCDB). Retrieved 28 February 2018.

[Ferret-5] "Asteroid 1106 Cydonia – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.

[Masiero-2014-6] 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. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121.

[WISE-7] 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.

[Masiero-2012-8] 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.

[Aznar-2017d-9] Aznar Macias, Amadeo (July 2017). "Density and Axis-size Relationship of Five Main-belt Asteroids: 2017 January - March". The Minor Planet Bulletin. 44 (3): 276–279. Bibcode:2017MPBu...44..276A. ISSN 1052-8091. Retrieved 28 February 2018.

[Klinglesmith-2016c-10] Klinglesmith, Daniel A. III; Hendrickx, Sebastian; Madden, Karl; Montgomery, Samuel (July 2016). "Asteroid Lightcurves from Estcorn Observatory". The Minor Planet Bulletin. 43 (3): 234–239. Bibcode:2016MPBu...43..234K. ISSN 1052-8091. Retrieved 28 February 2018.

[Veres-2015-11] Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007.

[MPC-object-12] "1106 Cydonia (1929 CW)". Minor Planet Center. Retrieved 28 February 2018.

[Nesvorny-2014-13] Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 978-0-8165-3213-1.

[springer-flowers-14] 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.