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546049 (2011 YL4)
Classification: Main-belt Asteroid          SPK-ID: 2546049
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1221674968009804 4.9074e-08  
a 2.334574721671608 2.1062e-08 au
q 2.049365571830142 1.1239e-07 au
i 5.485997783372713 4.8743e-06 deg
node 80.75682948528555 6.1703e-05 deg
peri 348.2387744031203 6.5948e-05 deg
M 150.1195760975449 2.2709e-05 deg
tp 2458457.193471522349
(2018-Dec-04.69347152)
8.1246e-05 TDB
period 1302.89703272852
3.57
1.7632e-05
4.827e-08
d
yr
n .2763073297097699 3.7392e-09 deg/d
Q 2.619783871513074 2.3635e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      5630 days (15.41 yr)  
   first obs. used      2005-01-17  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62861  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-26 04:08:17  

Additional Information
 Earth MOID = 1.06401 au 
 Jupiter MOID = 2.63012 au 
 T_jup = 3.552 
[ 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 17.87   n/a E2020-QM5  

546049 (2011 YL4)          Discovered 2011-Dec-23 by Sun, G., Gao, X. at Xingming
Reference: Last Updated: 2020-06-22

Alternate Designations
 2011 YL4 = 2014 SB45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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