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JPL Small-Body Database Browser
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305979 (2009 HJ100)
Classification: Main-belt Asteroid          SPK-ID: 2305979
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1427645769348592 7.1895e-08  
a 3.180739227416 3.8182e-08 au
q 2.726642337273844 2.3369e-07 au
i 2.980634932031424 6.299e-06 deg
node 120.906610111379 0.00015044 deg
peri 85.66814878865949 0.00015212 deg
M 352.528358887898 2.1096e-05 deg
tp 2459043.503522079763
(2020-Jul-13.00352208)
0.0001214 TDB
period 2072.003689208142
5.67
3.7309e-05
1.021e-07
d
yr
n .1737448643914246 3.1285e-09 deg/d
Q 3.634836117558156 4.3633e-08 au
  Orbit Determination Parameters
   # obs. used (total)      196  
   data-arc span      6259 days (17.14 yr)  
   first obs. used      2003-03-10  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68819  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:02:01  

Additional Information
 Earth MOID = 1.72444 au 
 Jupiter MOID = 1.33043 au 
 T_jup = 3.181 
[ 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 16.1   n/a MPO294600  

305979 (2009 HJ100)          Discovered 2009-Apr-27 by PMO NEO Survey Program at Purple Mountain
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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