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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03038773411149697 3.9114e-08  
a 3.038416220859173 1.999e-08 au
q 2.946085636619645 1.2057e-07 au
i .6964240008815765 5.0862e-06 deg
node 334.1289490549581 0.00035146 deg
peri 309.8897838624123 0.00036419 deg
M 204.1681400150638 9.8176e-05 deg
tp 2460037.880955144464
(2023-Apr-03.38095514)
0.00052974 TDB
period 1934.502635604478
5.30
1.909e-05
5.227e-08
d
yr
n .1860943445484167 1.8365e-09 deg/d
Q 3.1307468050987 2.0597e-08 au
  Orbit Determination Parameters
   # obs. used (total)      596  
   data-arc span      10387 days (28.44 yr)  
   first obs. used      1992-10-03  
   last obs. used      2021-03-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54119  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:52:00  

Additional Information
 Earth MOID = 1.92778 au 
 Jupiter MOID = 1.90518 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 15.22   n/a MPCxxxxx  
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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