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(2011 HM4)
Classification: Mars-crossing Asteroid          SPK-ID: 3564037
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5141575153798249 0.00072465  
a 3.114986591640787 0.00515 au
q 1.51339282524129 0.00025418 au
i 28.56444657794023 0.01332 deg
node 103.9556359935761 0.017224 deg
peri 132.3781614314653 0.03119 deg
M 264.8902960457889 1.5467 deg
tp 2459731.023991359898
(2022-May-31.52399136)
9.9432 TDB
period 2008.087807543923
5.50
4.98
0.01363
d
yr
n .1792750290338714 0.0004446 deg/d
Q 4.716580358040283 0.007798 au
  Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      49 days  
   first obs. used      2011-04-26  
   last obs. used      2011-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .45854  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 05:02:59  

Additional Information
 Earth MOID = .593319 au 
 Jupiter MOID = 1.16952 au 
 T_jup = 2.836 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.0   n/a MPO216190  

Alternate Designations
 2011 HM4 = 2011 LT20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
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