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108657 (2001 NC20)
Classification: Main-belt Asteroid          SPK-ID: 2108657
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2356013471483027 4.6096e-08  
a 2.699731192784792 1.4155e-08 au
q 2.063670886826401 1.2519e-07 au
i 17.05353950699321 5.2472e-06 deg
node 210.5340345194087 1.4057e-05 deg
peri 45.975499586784 1.8299e-05 deg
M 126.8802430989203 1.107e-05 deg
tp 2458429.454498318489
(2018-Nov-06.95449832)
4.7328e-05 TDB
period 1620.239491857447
4.44
1.2743e-05
3.489e-08
d
yr
n .2221893749715327 1.7475e-09 deg/d
Q 3.335791498743183 1.749e-08 au
  Orbit Determination Parameters
   # obs. used (total)      677  
   data-arc span      8626 days (23.62 yr)  
   first obs. used      1996-04-15  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55535  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 09:01:58  

Additional Information
 Earth MOID = 1.08573 au 
 Jupiter MOID = 1.79501 au 
 T_jup = 3.266 
[ 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 15.3   n/a MPO493613  
diameter diameter 2.482 km 0.360 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.261   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

108657 (2001 NC20)          Discovered 2001-Jul-12 by NEAT at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 NC20 = 1996 GQ19 = 2000 EH143 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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