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226845 (2004 SG40)
Classification: Main-belt Asteroid          SPK-ID: 2226845
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0870849738309918 6.5576e-08  
a 2.718557734015298 2.6115e-08 au
q 2.481812204890536 1.8522e-07 au
i 5.870184391785211 6.98e-06 deg
node 32.25275649145502 5.2966e-05 deg
peri 313.386335744347 6.1597e-05 deg
M 204.1549958209186 3.5662e-05 deg
tp 2459709.255842377338
(2022-May-09.75584238)
0.00016751 TDB
period 1637.217083729206
4.48
2.3591e-05
6.459e-08
d
yr
n .2198853185553148 3.1683e-09 deg/d
Q 2.955303263140061 2.8389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      317  
   data-arc span      5695 days (15.59 yr)  
   first obs. used      2004-09-17  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48775  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 10:30:57  

Additional Information
 Earth MOID = 1.47954 au 
 Jupiter MOID = 2.39931 au 
 T_jup = 3.347 
[ 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 15.9   n/a MPO470427  
diameter diameter 4.057 km 0.482 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226845 (2004 SG40)          Discovered 2004-Sep-17 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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