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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1179269143849145 7.744e-08  
a 2.812680017071967 2.5446e-08 au
q 2.480989341506562 2.1831e-07 au
i 4.068351119793605 9.4313e-06 deg
node 192.9814943765947 7.1401e-05 deg
peri 172.8923784168514 7.7111e-05 deg
M 345.565019504691 2.4708e-05 deg
tp 2459069.586408955687
(2020-Aug-08.08640896)
0.00011805 TDB
period 1722.974771744918
4.72
2.3381e-05
6.401e-08
d
yr
n .2089409583376634 2.8354e-09 deg/d
Q 3.144370692637373 2.8447e-08 au
  Orbit Determination Parameters
   # obs. used (total)      169  
   data-arc span      7889 days (21.60 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5929  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 18:46:53  

Additional Information
 Earth MOID = 1.4794 au 
 Jupiter MOID = 2.31909 au 
 T_jup = 3.306 
[ 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 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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