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123381 (2000 WK57)
Classification: Main-belt Asteroid          SPK-ID: 2123381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1488267177259368 2.8506e-08  
a 2.638840889791423 1.2256e-08 au
q 2.246110861562775 7.5303e-08 au
i 14.71393445840307 4.5912e-06 deg
node 82.13701997318584 1.4557e-05 deg
peri 51.21815429879094 2.2544e-05 deg
M 152.6398665143932 1.7758e-05 deg
tp 2458336.628979383693
(2018-Aug-06.12897938)
7.5875e-05 TDB
period 1565.734908444344
4.29
1.0908e-05
2.986e-08
d
yr
n .2299239788666925 1.6018e-09 deg/d
Q 3.031570918020071 1.408e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      2000-11-01  
   last obs. used      2020-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:35:39  

Additional Information
 Earth MOID = 1.29079 au 
 Jupiter MOID = 2.16642 au 
 T_jup = 3.334 
[ 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 14.6   n/a MPO475081  
diameter diameter 3.260 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.317   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123381 (2000 WK57)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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