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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428421954027302 6.2577e-08  
a 1.926458214983023 1.1208e-08 AU
q 1.651278694203223 1.1719e-07 AU
i 26.55479916080537 1.2169e-05 deg
node 45.80825411753585 1.1145e-05 deg
peri 287.3124558471288 5.103e-05 deg
M 209.5686840806664 5.3165e-05 deg
tp 2457408.606555542605
(2016-Jan-21.10655554)
0.00014515 JED
period 976.6474427048186
2.67
8.5234e-06
2.334e-08
d
yr
n .3686079379914029 3.2169e-09 deg/d
Q 2.201637735762823 1.2809e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      7499 days (20.53 yr)  
   first obs. used      1994-08-16  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51184  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 16:39:15  

Additional Information
 Earth MOID = .766623 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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