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541418 (2011 HU45)
Classification: Main-belt Asteroid          SPK-ID: 2541418
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .112533158043696 7.869e-08  
a 2.862856896068396 3.4915e-08 au
q 2.540690568526646 2.2663e-07 au
i 14.30837099241625 8.3359e-06 deg
node 211.5787287448394 2.5522e-05 deg
peri 260.1039160957571 4.6364e-05 deg
M 119.5977401327843 3.5884e-05 deg
tp 2458808.715189043992
(2019-Nov-21.21518904)
0.00017666 TDB
period 1769.285370352563
4.84
3.2367e-05
8.862e-08
d
yr
n .2034719814182736 3.7223e-09 deg/d
Q 3.185023223610146 3.8844e-08 au
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      9746 days (26.68 yr)  
   first obs. used      1994-10-31  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57549  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 20:58:42  

Additional Information
 Earth MOID = 1.60447 au 
 Jupiter MOID = 2.08997 au 
 T_jup = 3.246 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458477.5 (2018-Dec-25.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128521347667649 7.8483e-08  
q 2.541012772440817 2.2634e-07 au
tp 2458810.028510192535
(2019-Nov-22.52851019)
0.00017653 TDB
node 211.5931238796228 2.5522e-05 deg
peri 260.4233437453829 4.6335e-05 deg
i 14.30700208698354 8.3353e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      9746 days (26.68 yr)  
   first obs. used      1994-10-31  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57549  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 20:58:42  

Additional Information
 Jupiter MOID = 2.08997 au 
 T_jup = 3.246 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.159614976062558E-15 -1.759608071726253E-14 -4.212149991588132E-12 -3.695057367751285E-14 -1.216786981371795E-12 -3.068624461373732E-14
q -1.759608071726253E-14 5.122853052920108E-14 1.173557788122056E-11 1.042760349358751E-13 3.364337239749221E-12 9.109788793715838E-14
tp -4.212149991588132E-12 1.173557788122056E-11 3.116203099278761E-8 5.618604687421666E-11 6.820285639332804E-9 -1.177350762616677E-11
node -3.695057367751285E-14 1.042760349358751E-13 5.618604687421666E-11 6.513507458554875E-10 -6.164964996241414E-10 2.008757915902102E-11
peri -1.216786981371795E-12 3.364337239749221E-12 6.820285639332804E-9 -6.164964996241414E-10 2.146947775399546E-9 -2.038428332787193E-11
i -3.068624461373732E-14 9.109788793715838E-14 -1.177350762616677E-11 2.008757915902102E-11 -2.038428332787193E-11 6.947742714852377E-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 16.97   .24728 MPO639655 autocmod 2.8

541418 (2011 HU45)          Discovered 2011-Apr-12 by Mount Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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