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233920 (2009 SD161)
Classification: Main-belt Asteroid          SPK-ID: 2233920
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2592466418301182 7.8158e-08  
a 2.630576977328542 2.822e-08 au
q 1.948608729880495 2.0994e-07 au
i 5.8396712342326 8.0478e-06 deg
node 200.5639941796366 5.922e-05 deg
peri 155.6734901909091 5.9967e-05 deg
M 201.9102312278279 1.5202e-05 deg
tp 2459684.846755587279
(2022-Apr-15.34675559)
7.4679e-05 TDB
period 1558.38568128001
4.27
2.5077e-05
6.866e-08
d
yr
n .2310082826892424 3.7173e-09 deg/d
Q 3.31254522477659 3.5536e-08 au
  Orbit Determination Parameters
   # obs. used (total)      212  
   data-arc span      10030 days (27.46 yr)  
   first obs. used      1992-11-29  
   last obs. used      2020-05-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51578  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 01:50:43  

Additional Information
 Earth MOID = .946411 au 
 Jupiter MOID = 2.15519 au 
 T_jup = 3.344 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.6   n/a MPO454692  
diameter diameter 3.398 km 0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233920 (2009 SD161)          Discovered 2009-Sep-21 by La Sagra at La Sagra
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

Alternate Designations
 2009 SD161 = 2008 KB8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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