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259380 (2003 HE51)
Classification: Main-belt Asteroid          SPK-ID: 2259380
[ 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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1991200436415022 6.1423e-08  
a 3.13350369561406 3.7806e-08 au
q 2.50956030299258 1.9793e-07 au
i 18.43613255431775 6.959e-06 deg
node 77.02096785943526 1.7541e-05 deg
peri 194.2349813332534 2.3406e-05 deg
M .4631207597502311 1.9975e-05 deg
tp 2458997.893633457825
(2020-May-28.39363346)		 0.00011239 TDB
period 2026.020072365587
5.55		 3.6666e-05
1.004e-07		 d
yr
n .1776882691885983 3.2157e-09 deg/d
Q 3.75744708823554 4.5334e-08 au
   Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      6258 days (17.13 yr)  
   first obs. used      2003-04-28  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57142  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 23:10:31  

Additional Information
 Earth MOID = 1.49735 au 
 Jupiter MOID = 1.35833 au 
 T_jup = 3.103 
[ 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 14.9   n/a MPO476069  
diameter diameter 6.617 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.029   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

259380 (2003 HE51)          Discovered 2003-Apr-29 by Spacewatch at Kitt Peak
Reference: 20110119/Numbers.arcLast Updated: 2011-01-25

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