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JPL Small-Body Database Browser
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442271 (2011 QJ55)
Classification: Main-belt Asteroid          SPK-ID: 2442271
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09622627797391115 9.2501e-08  
a 2.841911244558511 4.3298e-08 au
q 2.56844470316244 2.6125e-07 au
i 5.08531603860942 7.733e-06 deg
node 242.9784630337092 0.00012398 deg
peri 85.99403676283532 0.00013752 deg
M 227.9785769244704 5.7389e-05 deg
tp 2459242.235554485568
(2021-Jan-27.73555449)
0.00028639 TDB
period 1749.9038734239
4.79
3.9991e-05
1.095e-07
d
yr
n .2057255861121196 4.7015e-09 deg/d
Q 3.115377785954582 4.7465e-08 au
  Orbit Determination Parameters
   # obs. used (total)      143  
   data-arc span      6505 days (17.81 yr)  
   first obs. used      2001-06-15  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58011  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:23:39  

Additional Information
 Earth MOID = 1.56272 au 
 Jupiter MOID = 2.17669 au 
 T_jup = 3.296 
[ 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 16.4   n/a MPO434642  

442271 (2011 QJ55)          Discovered 2007-Dec-04 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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