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20171 (1996 WC2)
Classification: Main-belt Asteroid          SPK-ID: 2020171
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03159150998696723 4.7919e-08  
a 2.383516757983513 8.2756e-09 au
q 2.308217864519573 1.1645e-07 au
i 8.03483245920563 3.5364e-06 deg
node 69.70591253034885 3.034e-05 deg
peri 123.0910649631327 6.2694e-05 deg
M 60.58860047569019 5.327e-05 deg
tp 2458974.288769789566
(2020-May-04.78876979)
0.00019912 TDB
period 1344.08192690357
3.68
7e-06
1.916e-08
d
yr
n .2678408159459076 1.3949e-09 deg/d
Q 2.458815651447453 8.537e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1762  
   data-arc span      10660 days (29.19 yr)  
   first obs. used      1991-05-12  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50668  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:14:31  

Additional Information
 Earth MOID = 1.31158 au 
 Jupiter MOID = 2.51457 au 
 T_jup = 3.523 
[ 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 14.53   n/a E2021B10  
diameter diameter 2.346 km 0.602 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.508   0.286 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20171 (1996 WC2)          Discovered 1996-Nov-30 by Lai, L. at Madonna di Dossob
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 WC2 = 1991 JC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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