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101473 (1998 WM20)
Classification: Main-belt Asteroid          SPK-ID: 2101473
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2277657253254519 3.9071e-08  
a 2.593086741080772 1.2538e-08 au
q 2.002470458666698 1.018e-07 au
i 11.30916783392531 5.5096e-06 deg
node 237.7340670487442 2.4436e-05 deg
peri 106.0322956136292 2.835e-05 deg
M 104.5608340945488 1.5758e-05 deg
tp 2458557.513458562285
(2019-Mar-15.01345856)
6.4766e-05 TDB
period 1525.190156510921
4.18
1.1062e-05
3.029e-08
d
yr
n .2360361417644792 1.7119e-09 deg/d
Q 3.183703023494847 1.5393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      688  
   data-arc span      7822 days (21.42 yr)  
   first obs. used      1998-11-10  
   last obs. used      2020-04-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54456  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:24  

Additional Information
 Earth MOID = 1.0308 au 
 Jupiter MOID = 2.39798 au 
 T_jup = 3.355 
[ 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 15.0   n/a MPO453468  
diameter diameter 3.081 km 0.251 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.245   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101473 (1998 WM20)          Discovered 1998-Nov-18 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 WM20 = 2002 OU3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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