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66940 (1999 WM11)
Classification: Main-belt Asteroid          SPK-ID: 2066940
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2462098345960225 4.6046e-08  
a 2.799617847788908 1.9282e-08 au
q 2.110324400552729 1.3409e-07 au
i 6.394857093265003 4.5826e-06 deg
node 289.4327895295816 4.4312e-05 deg
peri 66.36958223626473 4.5285e-05 deg
M 221.9937834645543 1.3728e-05 deg
tp 2459856.407665018553
(2022-Oct-03.90766502)
6.9888e-05 TDB
period 1710.986398544098
4.68
1.7677e-05
4.84e-08
d
yr
n .2104049455368722 2.1737e-09 deg/d
Q 3.488911295025088 2.403e-08 au
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      9247 days (25.32 yr)  
   first obs. used      1995-11-27  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55105  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:45  

Additional Information
 Earth MOID = 1.11373 au 
 Jupiter MOID = 2.02114 au 
 T_jup = 3.272 
[ 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 14.59   n/a MPCxxxxx  
diameter diameter 7.446 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66940 (1999 WM11)          Discovered 1999-Nov-29 by Shiozawa, H., Urata, T. at Nachi-Katsuura
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 WM11 = 1995 YD13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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