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266687 (2009 OL21)
Classification: Main-belt Asteroid          SPK-ID: 2266687
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1965123888371854 4.1415e-08  
a 2.439358387898394 1.6155e-08 au
q 1.959994243862455 1.0355e-07 au
i 1.480413962695496 4.8698e-06 deg
node 265.4180896935626 0.00020822 deg
peri 71.80302622603104 0.00020871 deg
M 288.9651679293216 1.4899e-05 deg
tp 2459275.087460666803
(2021-Mar-01.58746067)
5.8506e-05 TDB
period 1391.591743916473
3.81
1.3824e-05
3.785e-08
d
yr
n .2586965621014837 2.57e-09 deg/d
Q 2.918722531934332 1.933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      271  
   data-arc span      6422 days (17.58 yr)  
   first obs. used      2002-12-14  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53007  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:24:03  

Additional Information
 Earth MOID = .951277 au 
 Jupiter MOID = 2.46698 au 
 T_jup = 3.475 
[ 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 17.0   n/a MPO433731  

266687 (2009 OL21)          Discovered 2009-Jul-26 by La Sagra at La Sagra
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2009 OL21 = 2008 FM122 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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