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541422 (2011 HC49)
Classification: Main-belt Asteroid          SPK-ID: 2541422
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06914527243586355 1.0272e-07  
a 3.149433616145878 9.6866e-08 au
q 2.931665170738804 2.7422e-07 au
i 11.25898026249797 8.271e-06 deg
node 62.5510599786271 4.5139e-05 deg
peri 255.1247697018648 8.3761e-05 deg
M 171.0974803270665 7.5422e-05 deg
tp 2458230.239775235643
(2018-Apr-21.73977524)
0.00042379 TDB
period 2041.489332557474
5.59
9.4184e-05
2.579e-07
d
yr
n .1763418472282735 8.1355e-09 deg/d
Q 3.367202061552951 1.0356e-07 au
  Orbit Determination Parameters
   # obs. used (total)      75  
   data-arc span      3583 days (9.81 yr)  
   first obs. used      2011-04-28  
   last obs. used      2021-02-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61393  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:23:11  

Additional Information
 Earth MOID = 1.9422 au 
 Jupiter MOID = 1.84425 au 
 T_jup = 3.175 
[ 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 16.55   .29765 MPCxxxxx autocmod 2.8

541422 (2011 HC49)          Discovered 2011-Apr-29 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-12-13

[ show close-approach data ]
Alternate Designations
 2011 HC49 = 2015 BP81 = 2016 GC156 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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