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65689 (1990 WM4)
Classification: Main-belt Asteroid          SPK-ID: 2065689
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1743773867611733 3.462e-08  
a 2.241244191597243 6.2034e-09 au
q 1.850421886372857 7.6892e-08 au
i 5.325773408156861 2.9307e-06 deg
node 118.7652229805088 4.1309e-05 deg
peri 238.1594915562611 4.2067e-05 deg
M 337.5044900089485 8.0278e-06 deg
tp 2459077.081793861497
(2020-Aug-15.58179386)
2.7319e-05 TDB
period 1225.553268234666
3.36
5.0882e-06
1.393e-08
d
yr
n .2937448818675649 1.2195e-09 deg/d
Q 2.632066496821628 7.2851e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1181  
   data-arc span      10937 days (29.94 yr)  
   first obs. used      1990-11-16  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:21:08  

Additional Information
 Earth MOID = .852315 au 
 Jupiter MOID = 2.81212 au 
 T_jup = 3.609 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457418.5 (2016-Jan-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1748094701323864 3.4605e-08  
q 1.8491815253296 7.6902e-08 au
tp 2457852.536830582231
(2017-Apr-09.03683058)
2.7872e-05 TDB
node 118.789492620264 4.1342e-05 deg
peri 238.3951009892126 4.2094e-05 deg
i 5.324204341781773 2.9295e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1181  
   data-arc span      10937 days (29.94 yr)  
   first obs. used      1990-11-16  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51574  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:21:08  

Additional Information
 Jupiter MOID = 2.81212 au 
 T_jup = 3.609 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.19753934911005E-15 -2.655494268432759E-15 1.843449487022846E-13 2.886128631761836E-15 5.167359867431968E-14 -1.806174244562297E-15
q -2.655494268432759E-15 5.913899480576284E-15 -4.45263214929137E-13 -6.118313578774742E-15 -1.278590140082376E-13 4.03886403223E-15
tp 1.843449487022846E-13 -4.45263214929137E-13 7.768333925184904E-10 7.355881342281377E-12 2.36678381194347E-10 -9.681918159194982E-13
node 2.886128631761836E-15 -6.118313578774742E-15 7.355881342281377E-12 1.709129864325678E-9 -1.699406720761389E-9 2.877448341095941E-11
peri 5.167359867431968E-14 -1.278590140082376E-13 2.36678381194347E-10 -1.699406720761389E-9 1.77194386689151E-9 -2.891989417039848E-11
i -1.806174244562297E-15 4.03886403223E-15 -9.681918159194982E-13 2.877448341095941E-11 -2.891989417039848E-11 8.582034409622318E-12

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 15.6   n/a MPO432209  
diameter diameter 1.753 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.436   0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

65689 (1990 WM4)          Discovered 1990-Nov-16 by Elst, E. W. at La Silla
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 WM4 = 2000 UN26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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