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4868 Knushevia (1989 UN2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2004868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06787015369253092 1.9724e-08  
a 1.960538795447096 4.8149e-09 au
q 1.827476726079932 3.9096e-08 au
i 22.10558291553723 9.5368e-07 deg
node 187.4907328631612 3.4459e-06 deg
peri 94.66216277260281 1.1788e-05 deg
M 297.4932711859225 1.2745e-05 deg
tp 2459570.594823638539
(2021-Dec-22.09482364)
3.5533e-05 TDB
period 1002.678234791241
2.75
3.6937e-06
1.011e-08
d
yr
n .3590384108367051 1.3226e-09 deg/d
Q 2.09360086481426 5.1416e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1914  
   data-arc span      13867 days (37.97 yr)  
   first obs. used      1983-07-11  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47679  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:30:03  

Additional Information
 Earth MOID = .907074 au 
 Jupiter MOID = 2.98858 au 
 T_jup = 3.789 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.89   n/a MPO614063  
diameter diameter 1.535 km 0.322 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.1422 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D.; Stephens, R.D. (2015) Minor Planet Bull. 42, 188-189.]
geometric albedo albedo 1.000   0.000 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4868 Knushevia           Discovered 1989 Oct. 27 by E. F. Helin at Palomar.
Kyiv (Kiev) National Taras Shevchenko University is the Ukrainian national center of higher education, science and progressive thinking. Since its founding in 1834 the university has played a great role for the development of education, science and culture in the Ukraine.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1989 UN2 = 1988 DE5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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