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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 
[ 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 15.6   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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2082-Apr-30 18:20 00:03 Amphi 0.0329175268067717 0.0329166068019083 0.0329184483791869 3.54609716622807 3.54609711697932 2481615.264158951 2.79782120303007 412.496163389302 22.3608646419747 -84.417842256399 219036.511514607 T 25 CATAB v2.0f-lin.ifort 2020-Nov-12 22:21:11 2020-Nov-12 22:21

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