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JPL Small-Body Database Browser
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379774 (2011 HE31)
Classification: Main-belt Asteroid          SPK-ID: 2379774
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09163637708908666 4.5234e-08  
a 2.807744626265603 3.4315e-08 au
q 2.550453080923271 1.3409e-07 au
i 8.562609387236247 5.4765e-06 deg
node 198.9511705685747 3.4639e-05 deg
peri 305.9258182654295 4.8083e-05 deg
M 28.07428406198239 3.2338e-05 deg
tp 2458866.488822529720
(2020-Jan-17.98882253)
0.00015394 TDB
period 1718.441823228247
4.70
3.1503e-05
8.625e-08
d
yr
n .2094921079863546 3.8405e-09 deg/d
Q 3.065036171607935 3.746e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      6951 days (19.03 yr)  
   first obs. used      2001-01-18  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52277  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 03:13:48  

Additional Information
 Earth MOID = 1.57247 au 
 Jupiter MOID = 1.96745 au 
 T_jup = 3.300 
[ 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 MPO471895  

379774 (2011 HE31)          Discovered 2011-Apr-06 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-11-20

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