1359 Prieska

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1359 Prieska
Discovery [1]
Discovered by C. Jackson
Discovery site Johannesburg Obs.
Discovery date 22 July 1935
MPC designation (1359) Prieska
Named after
Prieska (South African town)[2]
1935 OC · A903 UE
A917 HA
main-belt · (outer)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 113.69 yr (41,524 days)
Aphelion 3.3306 AU
Perihelion 2.9053 AU
3.1179 AU
Eccentricity 0.0682
5.51 yr (2,011 days)
0° 10m 44.4s / day
Inclination 11.105°
Physical characteristics
Dimensions 36.45±9.67 km[4]
46.096±0.136 km[5]
48.491±0.439 km[6]
52.07 km (derived)[3]
52.64±1.07 km[7]
65.86±16.91 km[8]
0.0494 (derived)[3]
Tholen = CX: [1] · CX: [3]
B–V = 0.710[1]
U–B = 0.355[1]
10.3[1][3][6][8] · 10.36[4] · 10.47±0.24[9] · 10.50[7]

1359 Prieska, provisional designation 1935 OC, is a rare-type carbonaceous asteroid from the outer region of the asteroid belt, approximately 50 kilometers in diameter. It was discovered on 22 July 1935, by English-born South-African astronomer Cyril Jackson at Johannesburg Observatory in South Africa.[10] The asteroid was named after the South African town of Prieska.

Orbit and classification[edit]

Prieska orbits the Sun in the outer main-belt at a distance of 2.9–3.3 AU once every 5 years and 6 months (2,011 days). Its orbit has an eccentricity of 0.07 and an inclination of 11° with respect to the ecliptic.[1] In 1903, Prieska was first identified as A903 UE at Heidelberg Observatory, extending the body's observation arc by 32 years prior to its official discovery observation at Johannesburg.[10]

Physical characteristics[edit]

According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission and the Japanese Akari satellite, Prieska measures between 36.45 and 65.86 kilometers in diameter, and its surface has an albedo between 0.03 and 0.07.[4][5][6][7][8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0494 and a diameter of 52.07 kilometers with an absolute magnitude of 10.3.[3]

Spectral type[edit]

In the Tholen taxonomy, Prieska is a rare CX:-subtype, that transitions from the dark C to the X-type asteroids. Only a few asteroids have been assigned this spectral type by Tholen (also see list of CX-type asteroids).


Photometric lightcurve observations of Prieska at the Australian Oakley Southern Sky Observatory (E09) in May 2011 and October 2013, respectively, were inconclusive due to insufficient data.[11][12] As of 2017, the asteroid's rotation period still remains unknown.[1][3]


This minor planet was named for the South African town of Prieska, located on the south bank of the Orange River, in the province of the Northern Cape.[2] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 123).[2]


  1. ^ a b c d e f g h "JPL Small-Body Database Browser: 1359 Prieska (1935 OC)" (2017-07-04 last obs.). Jet Propulsion Laboratory. Retrieved 25 July 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1359) Prieska. Springer Berlin Heidelberg. p. 110. ISBN 978-3-540-00238-3. Retrieved 12 January 2017. 
  3. ^ a b c d e f g "LCDB Data for (1359) Prieska". Asteroid Lightcurve Database (LCDB). Retrieved 12 January 2017. 
  4. ^ a b c d 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. arXiv:1606.08923Freely accessible. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63. Retrieved 12 January 2017. 
  5. ^ a b c 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:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 12 January 2017. 
  6. ^ 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" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 12 January 2017. 
  7. ^ a b c d 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 25 July 2017. 
  8. ^ a b c d 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:1509.02522Freely accessible. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 12 January 2017. 
  9. ^ 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 12 January 2017. 
  10. ^ a b "1359 Prieska (1935 OC)". Minor Planet Center. Retrieved 12 January 2017. 
  11. ^ Ditteon, Richard; Horn, Lauren; Kamperman, Amy; Vorjohan, Bradley; Kirkpatrick, Elaine (January 2012). "Asteroid Lightcurve Analysis at the Oakley Souther Sky Observatory: 2011 April-May". The Minor Planet Bulletin. 39 (1): 26–28. Bibcode:2012MPBu...39...26D. ISSN 1052-8091. Retrieved 25 July 2017. 
  12. ^ Vinson, Rachel; Moore, Robert; Ditteon, Richard (July 2014). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2013 October". The Minor Planet Bulletin. 41 (3): 169–170. Bibcode:2014MPBu...41..169V. ISSN 1052-8091. Retrieved 25 July 2017. 

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