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46729 (1997 SJ31)
Classification: Main-belt Asteroid          SPK-ID: 2046729
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03047507184142904 4.0393e-08  
a 3.038182888204981 2.168e-08 au
q 2.945594046419533 1.2267e-07 au
i .6964195635794636 5.3172e-06 deg
node 334.1284062480306 0.00040348 deg
peri 309.6368739688207 0.00041568 deg
M 167.2173438790943 0.00010169 deg
tp 2458102.041303263499
(2017-Dec-14.54130326)
0.00054534 TDB
period 1934.279802094009
5.30
2.0704e-05
5.668e-08
d
yr
n .1861157830476604 1.9922e-09 deg/d
Q 3.130771729990428 2.2341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      9978 days (27.32 yr)  
   first obs. used      1992-10-03  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55038  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:33:45  

Additional Information
 Earth MOID = 1.9292 au 
 Jupiter MOID = 1.90608 au 
 T_jup = 3.240 
[ 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 15.2   n/a MPO351163  
diameter diameter 6.534 km 2.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.034   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46729 (1997 SJ31)          Discovered 1997-Sep-28 by Spacewatch at Kitt Peak
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 SJ31 = 2000 EN8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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