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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1430322633198133 7.3236e-08  
a 3.18214203750662 6.353e-08 au
q 2.726993059676926 2.3393e-07 au
i 2.980388580909116 7.2776e-06 deg
node 120.9048187884834 0.00016241 deg
peri 85.54330465597296 0.00016457 deg
M 283.1801442819867 3.1755e-05 deg
tp 2459042.934265298718
(2020-Jul-12.43426530)
0.00019075 TDB
period 2073.374572482961
5.68
6.2091e-05
1.7e-07
d
yr
n .1736299869680004 5.1997e-09 deg/d
Q 3.637291015336314 7.2617e-08 au
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      5775 days (15.81 yr)  
   first obs. used      2003-03-10  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .76374  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:17:28  

Additional Information
 Earth MOID = 1.72509 au 
 Jupiter MOID = 1.32889 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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