1788 Kiess

1788 Kiess, provisional designation 1952 OZ, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 25 July 1952, by the Indiana Asteroid Program at the U.S. Goethe Link Observatory near Brooklyn, Indiana, United States, and later named after astronomer Carl Kiess.[2][9]

1788 Kiess
Discovery [1]
Discovered byIndiana University
(Indiana Asteroid Program)
Discovery siteGoethe Link Obs.
Discovery date25 July 1952
Designations
(1788) Kiess
Named after
Carl C. Kiess (astronomer)[2]
1952 OZ · 1935 NE
1964 WP
main-belt · Themis [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc64.78 yr (23,660 days)
Aphelion3.5961 AU
Perihelion2.6381 AU
3.1171 AU
Eccentricity0.1537
5.50 yr (2,010 days)
323.37°
0° 10m 44.76s / day
Inclination0.6816°
161.91°
143.60°
Physical characteristics
Dimensions19.59 km (calculated)[3]
20.993±0.271 km[4][5]
11.0335±0.0071 h[6]
12±2 h[7]
0.070±0.014[4][5]
0.08 (assumed)[3]
C [3]
11.801±0.002 (R)[6] · 11.9[1][3][4] · 11.93±0.26[8]

    Orbit and classification

    The C-type asteroid is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. The asteroid orbits the Sun in the outer main-belt at a distance of 2.6–3.6 AU once every 5 years and 6 months (2,010 days). Its orbit has an eccentricity of 0.15 and an inclination of 1° with respect to the ecliptic.[1] Kiess was first identified as 1935 NE at Algiers Observatory in 1935. Its observation arc begins with its official discovery observation.[9]

    Physical characteristics

    Rotation period

    In 2010, two rotational lightcurves were obtained from photometric observations at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 12 and 11.0335 hours with a brightness variation of 0.25 and 0.30 magnitude, respectively (U=2-/2).[7][6]

    Diameter and albedo

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Kiess measures 20.99 kilometers in diameter, and its surface has an albedo of 0.07.[4] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 19.59 kilometers with an absolute magnitude of 11.9.[3]

    Naming

    This minor planet was named for American astronomer Carl C. Kiess (1887–1967), a graduate of Indiana University, who made distinguished contributions both in astronomy and spectroscopy at the U.S. National Bureau of Standards where he worked for over 40 years.[2] The official naming citation was published by the Minor Planet Center on 15 June 1973 (M.P.C. 3508).[10] Kiess was also a member of several eclipse expeditions. The lunar crater Kiess was named in his honour.[2]

    References
    1. "JPL Small-Body Database Browser: 1788 Kiess (1952 OZ)" (2017-05-05 last obs.). Jet Propulsion Laboratory. Retrieved 8 June 2017.
    2. Schmadel, Lutz D. (2007). "(1788) Kiess". Dictionary of Minor Planet Names – (1788) Kiess. Springer Berlin Heidelberg. p. 143. doi:10.1007/978-3-540-29925-7_1789. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1788) Kiess". Asteroid Lightcurve Database (LCDB). Retrieved 19 December 2016.
    4. 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.
    5. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 19 December 2016.
    6. Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 19 December 2016.
    7. Polishook, D.; Ofek, E. O.; Waszczak, A.; Kulkarni, S. R.; Gal-Yam, A.; Aharonson, O.; et al. (April 2012). "Asteroid rotation periods from the Palomar Transient Factory survey". Monthly Notices of the Royal Astronomical Society. 421 (3): 2094–2108. arXiv:1201.1930. Bibcode:2012MNRAS.421.2094P. doi:10.1111/j.1365-2966.2012.20462.x. Retrieved 19 December 2016.
    8. 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. Retrieved 19 December 2016.
    9. "1788 Kiess (1952 OZ)". Minor Planet Center. Retrieved 19 December 2016.
    10. Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

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