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541415 (2011 HH42)
Classification: Main-belt Asteroid          SPK-ID: 2541415
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1118280875640182 5.6553e-08  
a 3.188077897621505 4.5501e-08 au
q 2.831561243325376 1.9229e-07 au
i 15.82091245275942 6.5153e-06 deg
node 77.56999689689323 2.1869e-05 deg
peri 351.7342336650345 3.6458e-05 deg
M 24.18534213859036 2.7321e-05 deg
tp 2459060.817645073117
(2020-Jul-30.31764507)
0.00015752 TDB
period 2079.178681265858
5.69
4.4512e-05
1.219e-07
d
yr
n .1731452920538905 3.7068e-09 deg/d
Q 3.544594551917634 5.059e-08 au
  Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      6240 days (17.08 yr)  
   first obs. used      2003-12-18  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49445  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:23:09  

Additional Information
 Earth MOID = 1.84657 au 
 Jupiter MOID = 1.75482 au 
 T_jup = 3.129 
[ 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 16.03   .24684 MPCxxxxx autocmod 2.8

541415 (2011 HH42)          Discovered 2011-Apr-12 by Mount Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2019-12-13

[ show close-approach data ]
Alternate Designations
 2011 HH42 = 2014 WC404 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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