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58938 (1998 QJ18)
Classification: Main-belt Asteroid          SPK-ID: 2058938
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2670403838431542 3.8402e-08  
a 2.67925996023831 1.3406e-08 au
q 1.963789352040678 1.0498e-07 au
i 14.0767340554761 3.7392e-06 deg
node 146.8389437141467 1.4653e-05 deg
peri 230.2622429854309 1.6642e-05 deg
M 320.539247648196 5.9762e-06 deg
tp 2459176.083445952961
(2020-Nov-22.58344595)
2.6236e-05 TDB
period 1601.845803129405
4.39
1.2022e-05
3.291e-08
d
yr
n .2247407330322901 1.6867e-09 deg/d
Q 3.394730568435943 1.6985e-08 au
  Orbit Determination Parameters
   # obs. used (total)      902  
   data-arc span      8103 days (22.18 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48367  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:48:54  

Additional Information
 Earth MOID = .99397 au 
 Jupiter MOID = 2.16322 au 
 T_jup = 3.284 
[ 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 15.1   n/a MPO436194  

58938 (1998 QJ18)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QJ18 = 2000 DF96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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