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4691 Toyen (1983 TU)
Classification: Main-belt Asteroid          SPK-ID: 2004691
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1947965456686115 1.2745e-08  
a 2.264405319833709 6.1875e-09 au
q 1.823306985536475 3.0074e-08 au
i 5.873462660108698 7.5065e-07 deg
node 42.78173049419289 6.9062e-06 deg
peri 298.9480028841338 8.557e-06 deg
M 356.7296579115857 6.9309e-06 deg
tp 2459211.806296218112
(2020-Dec-28.30629622)
2.398e-05 TDB
period 1244.599656084849
3.41
5.1013e-06
1.397e-08
d
yr
n .2892496380181045 1.1856e-09 deg/d
Q 2.705503654130943 7.3928e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2514  
   data-arc span      17174 days (47.02 yr)  
   first obs. used      1973-12-21  
   last obs. used      2020-12-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44589  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:39:02  

Additional Information
 Earth MOID = .822621 au 
 Jupiter MOID = 2.71022 au 
 T_jup = 3.585 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.53   n/a E2021B10  
diameter diameter 7.089 km 0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.5025 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.221   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4691 Toyen           Discovered 1983 Oct. 7 by A. Mrkos at Klet.
Named in memory of Toyen (1902-1980), Czech painter and graphic artist, born Marie Čermínová. She is known for her imaginative abstraction, called artificialism, resulting in a surrealistic style. Name suggested by J. Ticha.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990402/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1983 TU = 1973 YV2 = 1987 YG5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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