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JPL Small-Body Database Browser
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20119 (1995 WC2)
Classification: Main-belt Asteroid          SPK-ID: 2020119
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1708540640151861 5.8683e-08  
a 2.765335352298577 1.5275e-08 au
q 2.292866568993499 1.6232e-07 au
i 10.28378942638196 5.2388e-06 deg
node 73.02133754253236 2.5674e-05 deg
peri 321.332261129523 2.8845e-05 deg
M 142.3965914697482 1.3892e-05 deg
tp 2458336.118962522240
(2018-Aug-05.61896252)
6.4319e-05 TDB
period 1679.655187131402
4.60
1.3917e-05
3.81e-08
d
yr
n .2143297045477684 1.7758e-09 deg/d
Q 3.237804135603655 1.7884e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1074  
   data-arc span      8844 days (24.21 yr)  
   first obs. used      1995-11-18  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56027  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:01:36  

Additional Information
 Earth MOID = 1.31051 au 
 Jupiter MOID = 2.19886 au 
 T_jup = 3.295 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456872.5 (2014-Aug-03.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1681694100369483 5.859e-08  
q 2.302500714227267 1.6169e-07 au
tp 2456655.892415683278
(2013-Dec-29.39241568)
6.6529e-05 TDB
node 73.17728053617378 2.5648e-05 deg
peri 321.5200305819861 2.8945e-05 deg
i 10.28444152159879 5.2378e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1074  
   data-arc span      8844 days (24.21 yr)  
   first obs. used      1995-11-18  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56027  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:01:36  

Additional Information
 Jupiter MOID = 2.19886 au 
 T_jup = 3.295 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.432731899422965E-15 -9.443656584958808E-15 1.071076464313159E-12 1.293562295833104E-15 7.284671148696787E-14 3.798158481811324E-15
q -9.443656584958808E-15 2.614343250263137E-14 -3.11614270165162E-12 -5.008028935053893E-15 -2.284153232714739E-13 -9.889810345358086E-15
tp 1.071076464313159E-12 -3.11614270165162E-12 4.426064325883086E-9 2.602397978558808E-12 9.000058684680399E-10 -5.311958404884944E-12
node 1.293562295833104E-15 -5.008028935053893E-15 2.602397978558808E-12 6.578368471251443E-10 -6.46247953275666E-10 -1.386870417847365E-11
peri 7.284671148696787E-14 -2.284153232714739E-13 9.000058684680399E-10 -6.46247953275666E-10 8.378135788437516E-10 1.236633032995745E-11
i 3.798158481811324E-15 -9.889810345358086E-15 -5.311958404884944E-12 -1.386870417847365E-11 1.236633032995745E-11 2.743472240647646E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO365492  
diameter diameter 3.705 km 0.255 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.323   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20119 (1995 WC2)          Discovered 1995-Nov-18 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 WC2 = 2000 WG88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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