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266800 (2009 SM338)
Classification: Main-belt Asteroid          SPK-ID: 2266800
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1259106046316631 4.5214e-08  
a 3.044696815818256 3.7226e-08 au
q 2.66133719881848 1.4889e-07 au
i 9.782882907674125 5.6551e-06 deg
node 43.29945785283664 3.6138e-05 deg
peri 13.23590489776697 4.6846e-05 deg
M 345.1879029562332 3.0922e-05 deg
tp 2459080.341475521469
(2020-Aug-18.84147552)
0.00016743 TDB
period 1940.503839719611
5.31
3.5588e-05
9.743e-08
d
yr
n .1855188289923803 3.4024e-09 deg/d
Q 3.428056432818032 4.1913e-08 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      7284 days (19.94 yr)  
   first obs. used      1999-12-12  
   last obs. used      2019-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58519  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 17:22:40  

Additional Information
 Earth MOID = 1.6739 au 
 Jupiter MOID = 1.95765 au 
 T_jup = 3.205 
[ 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 15.0   n/a MPO503217  
diameter diameter 5.721 km 0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266800 (2009 SM338)          Discovered 2009-Sep-22 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 SM338 = 2004 XK136 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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