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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09194855599918773 4.8695e-08  
a 2.8085792569459 5.0576e-08 au
q 2.550334449860453 1.4831e-07 au
i 8.56211559364197 6.0634e-06 deg
node 198.9620059806887 3.833e-05 deg
peri 305.9603825131836 5.4517e-05 deg
M 304.2671507271992 4.0879e-05 deg
tp 2458866.656574540517
(2020-Jan-18.15657454)		 0.00019878 TDB
period 1719.208116663566
4.71		 4.6438e-05
1.271e-07		 d
yr
n .209398732189937 5.6562e-09 deg/d
Q 3.066824064031347 5.5226e-08 au
   Orbit Determination Parameters
   # obs. used (total)      190  
   data-arc span      6484 days (17.75 yr)  
   first obs. used      2001-01-18  
   last obs. used      2018-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55117  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 05:07:13  

Additional Information
 Earth MOID = 1.57281 au 
 Jupiter MOID = 1.96723 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 16.0   n/a MPO427887  

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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