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JPL Small-Body Database Browser
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357323 (2003 HR20)
Classification: Main-belt Asteroid          SPK-ID: 2357323
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1721869048532914 6.1625e-08  
a 2.249239325232958 1.6813e-08 au
q 1.861949767546789 1.4107e-07 au
i 4.920265319408324 7.2799e-06 deg
node 208.8463917182392 7.2159e-05 deg
peri 18.82831403200969 7.6508e-05 deg
M 259.9165301037555 2.9329e-05 deg
tp 2458943.040385440186
(2020-Apr-03.54038544)
0.00010329 TDB
period 1232.116940852527
3.37
1.3815e-05
3.782e-08
d
yr
n .2921800586159529 3.276e-09 deg/d
Q 2.636528882919126 1.9707e-08 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      5712 days (15.64 yr)  
   first obs. used      2003-04-24  
   last obs. used      2018-12-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64563  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 17:34:56  

Additional Information
 Earth MOID = .85322 au 
 Jupiter MOID = 2.34779 au 
 T_jup = 3.604 
[ 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 MPO427814  

357323 (2003 HR20)          Discovered 2003-Apr-24 by LONEOS at Anderson Mesa
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29

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