1960 Guisan

1960 Guisan

Discovery [1]
Discovered by	P. Wild
Discovery site	Zimmerwald Obs.
Discovery date	25 October 1973
Designations
MPC designation	(1960) Guisan
Named after	Henri Guisan (General)[2]
Alternative designations	1973 UA · 1961 VC1 1969 UR2
Minor planet category	main-belt · (middle) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	61.49 yr (22,461 days)
Aphelion	2.8352 AU
Perihelion	2.2185 AU
Semi-major axis	2.5268 AU
Eccentricity	0.1220
Orbital period	4.02 yr (1,467 days)
Mean anomaly	74.212°
Mean motion	0° 14m 43.44s / day
Inclination	8.4737°
Longitude of ascending node	22.213°
Argument of perihelion	263.99°
Physical characteristics
Dimensions	7001245500000000000♠24.55±1.2 km (IRAS:5)[4] 7001246500000000000♠24.65±0.28 km[5] 7001270040000000000♠27.004±0.176 km[6] 7001272300000000000♠27.23±0.57 km[7] 7001284110000000000♠28.411±0.105 km[8]
Rotation period	7000846000000000000♠8.46 h[9]
Geometric albedo	6998370000000000000♠0.0370±0.0050[8] 6998410000000000000♠0.041±0.003[7][6] 6998490000000000000♠0.049±0.011[5] 6998496000000000000♠0.0496±0.005 (IRAS:5)[4]
Spectral type	C [3] B–V = 0.720[1] U–B = 0.290[1]
Absolute magnitude (H)	11.93[1][3][7][8][5][9] · 11.93 (IRAS:5)[4]

1960 Guisan, provisional designation 1973 UA, is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 25 kilometers in diameter.

It was discovered on 25 October 1973, by astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland, and named after Swiss General Henri Guisan.^[2][10]

Contents

• 
  1 Orbit and classification
  


• 
  2 Physical characteristics
  


• 
  3 Naming
  


• 
  4 References
  


• 
  5 External links
  

Orbit and classification

Guisan orbits the Sun in the central main-belt at a distance of 2.2–2.8 AU once every 4.02 years (1,467 days). Its orbit has an eccentricity of 0.12 and an inclination of 8° with respect to the ecliptic.^[1]

Physical characteristics

Guisan has been characterized as a dark C-type asteroid.^[3]

It has a rotation period of 8.46 hours^[9] and a geometric albedo of 0.04–0.05, as measured by the IRAS, Akari, WISE and NEOWISE surveys.^[4][5][7][8]

Naming

This minor planet was named in memory of Henri Guisan (1874–1960), general of the Swiss army during the Second World War. He was notably from the country's smaller Swiss-French part rather than from the German-speaking part.^[2] The official naming citation was published by the Minor Planet Center before November 1977 (M.P.C. 4157).^[11]

References

1. 
   ^ ^abcdef "JPL Small-Body Database Browser: 1960 Guisan (1973 UA)" (2016-09-21 last obs.). Jet Propulsion Laboratory. Retrieved 10 June 2017..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
   


2. 
   ^ ^abc Schmadel, Lutz D. (2007). "(1960) Guisan". Dictionary of Minor Planet Names – (1960) Guisan. Springer Berlin Heidelberg. p. 158. doi:10.1007/978-3-540-29925-7_1961. ISBN 978-3-540-00238-3.
   


3. 
   ^ ^abcd "LCDB Data for (1960) Guisan". Asteroid Lightcurve Database (LCDB). Retrieved 8 December 2016.
   


4. 
   ^ ^abcd Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 8 December 2016.
   


5. 
   ^ ^abcd 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 8 December 2016.
   


6. 
   ^ ^ab 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. Retrieved 8 December 2016.
   


7. 
   ^ ^abcd 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 8 December 2016.
   


8. 
   ^ ^abcd 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.
   


9. 
   ^ ^abc Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus. 72 (1): 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved 8 December 2016.
   


10. 
    ^ "1960 Guisan (1973 UA)". Minor Planet Center. Retrieved 8 December 2016.
    


11. 
    ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 8 December 2016.
    

External links

• 
  Asteroid Lightcurve Database (LCDB), query form (info)


• 
  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


• 
  1960 Guisan at the JPL Small-Body Database
  • 
    Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
    
  
  

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