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74128 (1998 QA66)
Classification: Main-belt Asteroid          SPK-ID: 2074128
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2030342864408539 6.3181e-08  
a 2.609615712581678 1.7117e-08 au
q 2.079774248492817 1.7394e-07 au
i 11.020950277647 5.4512e-06 deg
node 291.9831584974721 2.375e-05 deg
peri 77.49806066553907 2.8695e-05 deg
M 31.371396104563 1.3973e-05 deg
tp 2458866.317892012932
(2020-Jan-17.81789201)
5.9368e-05 TDB
period 1539.796275382155
4.22
1.5149e-05
4.148e-08
d
yr
n .2337971624919363 2.3002e-09 deg/d
Q 3.13945717667054 2.0592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      665  
   data-arc span      8656 days (23.70 yr)  
   first obs. used      1996-02-18  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51385  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:50:09  

Additional Information
 Earth MOID = 1.11126 au 
 Jupiter MOID = 2.46286 au 
 T_jup = 3.355 
[ 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 15.2   n/a MPO493386  

74128 (1998 QA66)          Discovered 1998-Aug-24 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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