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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1256398649090061 4.5682e-08  
a 3.044419241029324 3.7792e-08 au
q 2.661918818860022 1.4954e-07 au
i 9.783254991143938 5.6838e-06 deg
node 43.30011646212329 3.627e-05 deg
peri 13.20528827154387 4.6985e-05 deg
M 270.9766536534837 3.0353e-05 deg
tp 2459080.295895478254
(2020-Aug-18.79589548)
0.00016798 TDB
period 1940.238481935368
5.31
3.6128e-05
9.891e-08
d
yr
n .1855442015771709 3.4549e-09 deg/d
Q 3.426919663198627 4.2541e-08 au
  Orbit Determination Parameters
   # obs. used (total)      417  
   data-arc span      7265 days (19.89 yr)  
   first obs. used      1999-12-12  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58597  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 19:34:40  

Additional Information
 Earth MOID = 1.67405 au 
 Jupiter MOID = 1.95788 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 15.1   n/a MPO321417  
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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