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71940 (2000 WC78)
Classification: Main-belt Asteroid          SPK-ID: 2071940
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09400143500943675 4.682e-08  
a 2.330605480156541 1.1215e-08 au
q 2.111525220580969 1.0705e-07 au
i 3.340979476187306 5.3878e-06 deg
node 352.9464200061751 6.1015e-05 deg
peri 164.8415070169761 6.4913e-05 deg
M 88.36467028444592 2.1824e-05 deg
tp 2458681.509512447724
(2019-Jul-17.00951245)
7.8354e-05 TDB
period 1299.575669203093
3.56
9.3802e-06
2.568e-08
d
yr
n .2770134964289952 1.9995e-09 deg/d
Q 2.549685739732114 1.2269e-08 au
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      7701 days (21.08 yr)  
   first obs. used      1998-01-23  
   last obs. used      2019-02-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56437  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:08:25  

Additional Information
 Earth MOID = 1.12067 au 
 Jupiter MOID = 2.4286 au 
 T_jup = 3.563 
[ 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 16.1   n/a MPO426432  
diameter diameter 2.849 km 0.301 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71940 (2000 WC78)          Discovered 2000-Nov-20 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 WC78 = 2002 JW38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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