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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428421667211471 4.9002e-08  
a 1.926458210087908 8.9655e-09 AU
q 1.651278745261209 9.4545e-08 AU
i 26.55480034122847 1.1696e-05 deg
node 45.80825810278234 9.3666e-06 deg
peri 287.312449265589 5.0091e-05 deg
M 209.568691979306 5.175e-05 deg
tp 2457408.606532558817
(2016-Jan-21.10653256)
0.00014089 JED
period 976.6474389823389
2.67
6.8178e-06
1.867e-08
d
yr
n .3686079393963475 2.5732e-09 deg/d
Q 2.201637674914608 1.0246e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      7586 days (20.77 yr)  
   first obs. used      1994-08-16  
   last obs. used      2015-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49674  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 17:55:08  

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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