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312576 (2009 HR69)
Classification: Main-belt Asteroid          SPK-ID: 2312576
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179269124597609 8.9477e-08  
a 2.812680018523655 3.8668e-08 au
q 2.480989348201898 2.6587e-07 au
i 4.068350638078006 9.6538e-06 deg
node 192.9815101306229 8.7547e-05 deg
peri 172.8923629264532 9.2216e-05 deg
M 345.5650188357247 2.7299e-05 deg
tp 2459069.586412210873
(2020-Aug-08.08641221)
0.00013093 TDB
period 1722.974773078818
4.72
3.5531e-05
9.728e-08
d
yr
n .2089409581759046 4.3087e-09 deg/d
Q 3.144370688845413 4.3228e-08 au
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      7802 days (21.36 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63371  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 20:08:25  

Additional Information
 Earth MOID = 1.4794 au 
 Jupiter MOID = 2.31909 au 
 T_jup = 3.306 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456677.5 (2014-Jan-20.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1214830189457098 8.9916e-08  
q 2.470196875126358 2.6811e-07 au
tp 2457345.542537829229
(2015-Nov-19.04253783)
0.0001229 TDB
node 193.1307995902893 8.7345e-05 deg
peri 172.7874239418031 9.1678e-05 deg
i 4.072971438643187 9.6699e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      7802 days (21.36 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63371  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 20:08:25  

Additional Information
 Jupiter MOID = 2.31909 au 
 T_jup = 3.306 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.084828950878865E-15 -2.394073660060988E-14 -2.575993473197992E-13 -1.00782816364272E-14 1.295430138303165E-13 -2.478754515683722E-15
q -2.394073660060988E-14 7.188042430986921E-14 4.624825038754502E-13 2.676815456291267E-14 -5.37539247228168E-13 8.806610349486832E-15
tp -2.575993473197992E-13 4.624825038754502E-13 1.510455939021045E-8 7.454188998468488E-13 3.423933805575242E-9 -4.041853947450942E-12
node -1.00782816364272E-14 2.676815456291267E-14 7.454188998468488E-13 7.629062547748012E-9 -7.608907456668234E-9 -9.771903740497959E-11
peri 1.295430138303165E-13 -5.37539247228168E-13 3.423933805575242E-9 -7.608907456668234E-9 8.404919892054598E-9 9.639319528420439E-11
i -2.478754515683722E-15 8.806610349486832E-15 -4.041853947450942E-12 -9.771903740497959E-11 9.639319528420439E-11 9.350704723712098E-11

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 17.0   n/a MPO440462  

312576 (2009 HR69)          Discovered 2009-Apr-22 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2009 HR69 = 2008 CV64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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