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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457430.5 (2016-Feb-12.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1957105639012405 4.1453e-08  
q 1.962364938170044 1.0351e-07 au
tp 2457884.139064069266
(2017-May-10.63906407)
5.5391e-05 TDB
node 265.4404422089409 0.00020833 deg
peri 71.87981230960119 0.00020882 deg
i 1.479662463543453 4.8686e-06 deg
  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
 Jupiter MOID = 2.46698 au 
 T_jup = 3.475 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.718349640936925E-15 -4.256928888567521E-15 1.074362855918134E-12 6.11898193901531E-15 2.981292700908309E-13 -1.026053852629765E-15
q -4.256928888567521E-15 1.071438056472249E-14 -2.532575910597061E-12 -2.157498804084163E-14 -7.147459601908576E-13 2.700974415194828E-15
tp 1.074362855918134E-12 -2.532575910597061E-12 3.06818343086551E-9 1.334270952418967E-11 8.255798890959514E-10 -1.468337895235295E-12
node 6.11898193901531E-15 -2.157498804084163E-14 1.334270952418967E-11 4.340051211760681E-8 -4.338218308329383E-8 -4.458871719635227E-10
peri 2.981292700908309E-13 -7.147459601908576E-13 8.255798890959514E-10 -4.338218308329383E-8 4.36061273851679E-8 4.453410841282263E-10
i -1.026053852629765E-15 2.700974415194828E-15 -1.468337895235295E-12 -4.458871719635227E-10 4.453410841282263E-10 2.370301394084231E-11

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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