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39634 (1994 WM2)
Classification: Main-belt Asteroid          SPK-ID: 2039634
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2021408798174303 4.6679e-08  
a 3.11989857655563 2.3492e-08 au
q 2.489239533349526 1.4586e-07 au
i 18.38116530104947 5.1066e-06 deg
node 85.13479850179142 1.51e-05 deg
peri 301.7076095825333 1.8997e-05 deg
M 259.9899131656998 1.4875e-05 deg
tp 2459559.678473777303
(2021-Dec-11.17847378)
8.7315e-05 TDB
period 2012.839473815836
5.51
2.2734e-05
6.224e-08
d
yr
n .1788518183804945 2.02e-09 deg/d
Q 3.750557619761733 2.824e-08 au
  Orbit Determination Parameters
   # obs. used (total)      875  
   data-arc span      8983 days (24.59 yr)  
   first obs. used      1994-11-28  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55612  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:32:21  

Additional Information
 Earth MOID = 1.54907 au 
 Jupiter MOID = 1.84122 au 
 T_jup = 3.107 
[ 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 13.7   n/a MPO436048  
diameter diameter 5.641 km 0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.221   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39634 (1994 WM2)          Discovered 1994-Nov-28 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 WM2 = 1999 SU12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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