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442211 (2011 HP5)
Classification: Main-belt Asteroid          SPK-ID: 2442211
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2520167427859024 4.4931e-08  
a 2.37734298052354 2.3125e-08 au
q 1.778212746087069 1.0055e-07 au
i 9.07583597777325 8.0669e-06 deg
node 155.1306204960665 3.0982e-05 deg
peri 95.31755968254939 4.2054e-05 deg
M 151.5294493503839 2.9213e-05 deg
tp 2458436.952231607720
(2018-Nov-14.45223161)		 0.00010175 TDB
period 1338.863154924458
3.67		 1.9535e-05
5.348e-08		 d
yr
n .26888483612077 3.9233e-09 deg/d
Q 2.976473214960012 2.8953e-08 au
   Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      7119 days (19.49 yr)  
   first obs. used      2000-04-27  
   last obs. used      2019-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63774  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:59:49  

Additional Information
 Earth MOID = .792603 au 
 Jupiter MOID = 2.13873 au 
 T_jup = 3.481 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457488.5 (2016-Apr-10.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2517892873333508 4.488e-08  
q 1.779010930868775 1.0045e-07 au
tp 2457098.281313614762
(2015-Mar-16.78131361)		 8.6694e-05 TDB
node 155.1613304660962 3.0975e-05 deg
peri 95.32647682957131 4.2074e-05 deg
i 9.076375987904006 8.0679e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      7119 days (19.49 yr)  
   first obs. used      2000-04-27  
   last obs. used      2019-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63774  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:59:49  

Additional Information
 Jupiter MOID = 2.13873 au 
 T_jup = 3.481 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.014236742719514E-15 -4.454273784031807E-15 8.986447397357591E-13 -5.221822719946974E-16 2.433710736557883E-13 -1.345386010206495E-14
q -4.454273784031807E-15 1.009103822027503E-14 -1.03037977709031E-12 -1.864691698191523E-15 -2.253307778074033E-13 3.15391318835169E-14
tp 8.986447397357591E-13 -1.03037977709031E-12 7.515817481604761E-9 -3.621602100045657E-11 2.479219296922158E-9 9.309913617427954E-12
node -5.221822719946974E-16 -1.864691698191523E-15 -3.621602100045657E-11 9.594455977058746E-10 -9.585481218204135E-10 4.489553558383657E-11
peri 2.433710736557883E-13 -2.253307778074033E-13 2.479219296922158E-9 -9.585481218204135E-10 1.770210654198245E-9 -4.091727106821548E-11
i -1.345386010206495E-14 3.15391318835169E-14 9.309913617427954E-12 4.489553558383657E-11 -4.091727106821548E-11 6.509101695301859E-11

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.8   n/a MPO437720  

442211 (2011 HP5)          Discovered 2004-Jun-16 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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