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379890 (2012 HE68)
Classification: Inner Main-belt Asteroid          SPK-ID: 2379890
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04942154251273232 6.6356e-08  
a 1.969937269778696 1.7514e-08 au
q 1.872579931252913 1.3338e-07 au
i 22.2158513337447 8.9823e-06 deg
node 202.7576279490695 1.9747e-05 deg
peri 298.5418225281588 9.53e-05 deg
M 50.90446274314033 9.126e-05 deg
tp 2458857.699285810136
(2020-Jan-09.19928581)
0.00025612 TDB
period 1009.89686047278
2.76
1.3468e-05
3.687e-08
d
yr
n .3564720458992884 4.7538e-09 deg/d
Q 2.06729460830448 1.8379e-08 au
  Orbit Determination Parameters
   # obs. used (total)      101  
   data-arc span      7503 days (20.54 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64257  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:31:08  

Additional Information
 Earth MOID = .910744 au 
 Jupiter MOID = 2.93989 au 
 T_jup = 3.779 
[ 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 17.4   n/a MPO450361  

379890 (2012 HE68)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: Last Updated: 2013-11-20

[ show close-approach data ]
Alternate Designations
 2012 HE68 = 1999 TZ169 = 2010 TW87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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