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266790 (2009 SR268)
Classification: Main-belt Asteroid          SPK-ID: 2266790
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07548563174478921 6.2661e-08  
a 2.731080852135825 2.3907e-08 au
q 2.524923488666255 1.664e-07 au
i 6.2434905305276 5.9613e-06 deg
node 9.162999032507591 5.9862e-05 deg
peri 15.68858549379925 7.7439e-05 deg
M 117.7419324424117 4.6607e-05 deg
tp 2458461.326024767946
(2018-Dec-08.82602477)
0.00021325 TDB
period 1648.542936718624
4.51
2.1646e-05
5.926e-08
d
yr
n .2183746579974249 2.8674e-09 deg/d
Q 2.937238215605394 2.5712e-08 au
  Orbit Determination Parameters
   # obs. used (total)      205  
   data-arc span      10342 days (28.31 yr)  
   first obs. used      1991-10-10  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58099  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 12:49:51  

Additional Information
 Earth MOID = 1.5287 au 
 Jupiter MOID = 2.41488 au 
 T_jup = 3.341 
[ 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 16.5   n/a MPO460147  

266790 (2009 SR268)          Discovered 2009-Sep-24 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 SR268 = 2005 XA29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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