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52439 (1994 QL)
Classification: Mars-crossing Asteroid          SPK-ID: 2052439
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1429766781209963 4.8708e-08  
a 1.926507624864141 8.9255e-09 au
q 1.651061964286296 9.4026e-08 au
i 26.55528542910607 1.1678e-05 deg
node 45.80391519076448 9.3315e-06 deg
peri 287.2955828715517 4.9944e-05 deg
M 357.0438987392637 5.1707e-05 deg
tp 2457408.519943913547
(2016-Jan-21.01994391)
0.00014029 JED
period 976.6850165876154
2.67
6.7874e-06
1.858e-08
d
yr
n .3685937573382498 2.5615e-09 deg/d
Q 2.201953285441986 1.0202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      703  
   data-arc span      7640 days (20.92 yr)  
   first obs. used      1994-08-16  
   last obs. used      2015-07-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49552  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 15:58:58  

Additional Information
 Earth MOID = .765237 au 
 Jupiter MOID = 3.16582 au 
 T_jup = 3.778 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.8 mag n/a MPO280042  

52439 (1994 QL)          Discovered 1994-Aug-16 by McNaught, R. H. at Siding Spring
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1994 QL = 1999 JW4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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