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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09627195784834246 9.212e-08  
a 2.844657544571503 4.2999e-08 au
q 2.570796793347546 2.6111e-07 au
i 5.08291650706227 7.7259e-06 deg
node 242.9746571339111 0.00012403 deg
peri 85.40202436239366 0.0001377 deg
M 310.819170441702 5.8566e-05 deg
tp 2459239.906954897252
(2021-Jan-25.40695490)
0.00028792 TDB
period 1752.441033164086
4.80
3.9734e-05
1.088e-07
d
yr
n .205427739471501 4.6578e-09 deg/d
Q 3.11851829579546 4.7138e-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 = 1.56581 au 
 Jupiter MOID = 2.17251 au 
 T_jup = 3.295 
[ 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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