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305956 (2009 HJ43)
Classification: Main-belt Asteroid          SPK-ID: 2305956
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0392665560700404 6.3269e-08  
a 2.690350718378194 2.7947e-08 au
q 2.584709911046923 1.6772e-07 au
i 8.044335424728947 5.8373e-06 deg
node 55.73121291531053 4.7428e-05 deg
peri 99.4362270837162 9.4851e-05 deg
M 240.3126481965926 8.6605e-05 deg
tp 2459536.367641089289
(2021-Nov-17.86764109)
0.00039227 TDB
period 1611.802315661663
4.41
2.5115e-05
6.876e-08
d
yr
n .2233524524080461 3.4803e-09 deg/d
Q 2.795991525709465 2.9045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      244  
   data-arc span      7117 days (19.49 yr)  
   first obs. used      2000-05-04  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64325  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 07:41:34  

Additional Information
 Earth MOID = 1.60748 au 
 Jupiter MOID = 2.19813 au 
 T_jup = 3.357 
[ 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 16.2   n/a MPO455254  

305956 (2009 HJ43)          Discovered 2009-Apr-20 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

Alternate Designations
 2009 HJ43 = 2006 TM128 = 2007 XA39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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