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541409 (2011 HM20)
Classification: Main-belt Asteroid          SPK-ID: 2541409
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02463101502353789 6.3998e-08  
a 3.036758484290827 3.9025e-08 au
q 2.961960040441403 1.7997e-07 au
i 6.064159083996292 6.3422e-06 deg
node 189.7362920352677 5.9834e-05 deg
peri 164.0035344951567 0.00015292 deg
M 142.9049460364049 0.00014255 deg
tp 2458433.211716340236
(2018-Nov-10.71171634)
0.00076102 TDB
period 1932.919676881915
5.29
3.726e-05
1.02e-07
d
yr
n .1862467459489746 3.5902e-09 deg/d
Q 3.11155692814025 3.9986e-08 au
  Orbit Determination Parameters
   # obs. used (total)      218  
   data-arc span      6789 days (18.59 yr)  
   first obs. used      2002-08-18  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56521  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 13:25:18  

Additional Information
 Earth MOID = 1.95545 au 
 Jupiter MOID = 1.98595 au 
 T_jup = 3.232 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.16   n/a MPCxxxxx  

541409 (2011 HM20)          Discovered 2002-Aug-18 by NEAT at Palomar
Reference: Last Updated: 2019-12-13

Alternate Designations
 2011 HM20 = 2002 VW5 = 2002 VX148 = 2007 LK26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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