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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .196365504169056 6.388e-08  
a 2.438946183600612 2.3495e-08 au
q 1.960021286616683 1.4747e-07 au
i 1.480491597192345 4.9245e-06 deg
node 265.4162508973568 0.00026128 deg
peri 71.88609642293235 0.0002617 deg
M 185.3563698635053 1.8124e-05 deg
tp 2459275.419540887592
(2021-Mar-01.91954089)
7.5968e-05 TDB
period 1391.239030760162
3.81
2.0104e-05
5.504e-08
d
yr
n .2587621480137017 3.7391e-09 deg/d
Q 2.917871080584541 2.8109e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      5903 days (16.16 yr)  
   first obs. used      2002-12-14  
   last obs. used      2019-02-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53086  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:22:53  

Additional Information
 Earth MOID = .950408 au 
 Jupiter MOID = 2.4649 au 
 T_jup = 3.476 
[ 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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