666 Desdemona

666 Desdemona
Discovery [1]
Discovered by A. Kopff
Discovery site Heidelberg Obs.
Discovery date 23 July 1908
Designations
MPC designation 666 Desdemona
Named after
 Desdemona
(character in Othello)[2]
1908 DM
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 106.97 yr (39,071 days)    
Aphelion 3.2094 AU
Perihelion 1.9759 AU
2.5926 AU
Eccentricity 0.2378
4.17 yr (1,525 days)
168.14°
Inclination 7.5849°
215.41°
174.21°
Physical characteristics
Dimensions 27.04±1.0 km (IRAS:17)[4]
27.37±0.71 km[5]
31.485±0.116 km[6]
32.74±0.37 km[7]
27.22 km (derived)[3]
14.607±0.004 h[lower-alpha 1]
15.45±0.01 h[8]
9.6 h[9][lower-alpha 2]
9.6 h[9][lower-alpha 2]
9.6 h[9][lower-alpha 2]
0.1055±0.008 (IRAS:17)[4]
0.105±0.006[5]
0.1026±0.0207[6]
0.095±0.015[7]
0.1372 (derived)[3]
S [3]
10.6[1]

    666 Desdemona, provisional designation 1908 DM, is a stony asteroid from the inner regions of the asteroid belt, about 27 kilometers in diameter. It was discovered by German astronomer August Kopff at Heidelberg-Königstuhl State Observatory in southern Germany, on 23 July 1908.[10]

    The stony S-type asteroid orbits the Sun at a distance of 2.0–3.2 AU once every 4 years and 2 months (1,525 days). Its orbit shows a notable eccentricity of 0.24 and an inclination of 8 degrees from the plane of the ecliptic.[1]

    Several photometric analysis have been carried out on fragmentary light-curves with results based on less than full coverage.[9][lower-alpha 2] In 2013, the most accurate observation by astronomer Anna Marciniak at Poznań Observatory, Poland, rendered a rotation period of 14.607±0.004 hours with a brightness amplitude of 0.22 in magnitude, [lower-alpha 1] superseding a peroid of 15.45±0.01 hours, measured at the Santana Observatory (646), California, in 2000.[8]

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer (WISE) with its subsequent NEOWISE mission, the asteroid's surface has an albedo between 0.095 and 0.106. While the Collaborative Asteroid Lightcurve Link agrees with the space-based IRAS and Akari surveys on a diameter of about 27 kilometers, the WISE/NEOWISE results found a diameter between 31 and 33 kilometers.[3][4][5][6][7]

    The minor planet was named for the wife of Othello in the play The Tragedy of Othello, the Moor of Venice written in 1604 by William Shakespeare, after whom the minor planet 2985 Shakespeare is named. The naming of "Desdemona" might be influenced by the two letters of the provisional designation 1908 DM. The name Desdemona has also been given to a satellite of Uranus (Uranus X), that was discovered by the Voyager 2 in 1986.[2]

    References

    1. 1 2 Marciniak (2015) web: rotation period 14.607±0.004 hours with a brightness amplitude of 0.22 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (666) Desdemona
    2. 1 2 3 4 Three different observations by Laurent Bernasconi, Jean Strajnic et al., and René Roy between between 2004 and 2006 rendered a rotation period 9.6 hours with a brightness amplitude of 0.07, 0.16 and 0.09 magnitude, respectively. All observations are labelled tentative and CALL assignes a Quality-Code of either 1+ or -2 to each of them. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) and Asteroids and comets rotation curves – (666) Desdemona Geneva Observatory, Light-curves
    1. 1 2 3 4 "JPL Small-Body Database Browser: 666 Desdemona (1908 DM)" (2015-07-13 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (666) Desdemona. Springer Berlin Heidelberg. pp. 65–66. ISBN 978-3-540-00238-3. Retrieved January 2016.
    3. 1 2 3 4 5 "LCDB Data for (666) Desdemona". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
    4. 1 2 3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved January 2016.
    5. 1 2 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. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved January 2016.
    6. 1 2 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved January 2016.
    7. 1 2 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. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved January 2016.
    8. 1 2 Stephens, R. D. (June 2001). "Rotational Periods and Lightcurves of 1277 Dolores, 666 Desdemona and (7505) 1997 AM2". The Minor Planet Bulletin 28: 28–29. Bibcode:2001MPBu...28...28S. Retrieved January 2016.
    9. 1 2 3 4 Behrend, Raoul. "Asteroids and comets rotation curves – (666) Desdemona". Geneva Observatory. Retrieved January 2016.
    10. ↑ "666 Desdemona (1908 DM)". Minor Planet Center. Retrieved January 2016.

    External links


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