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90751 (1993 QE9)
Classification: Main-belt Asteroid          SPK-ID: 2090751
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1480381438480045 3.0761e-08  
a 2.326085749061684 8.4336e-09 au
q 1.981736332339297 7.1238e-08 au
i 4.171514136183546 3.9529e-06 deg
node 145.2146445251546 4.3661e-05 deg
peri 241.3070205986294 4.5325e-05 deg
M 161.5451913105215 1.2635e-05 deg
tp 2458419.028354513903
(2018-Oct-27.52835451)
4.4948e-05 TDB
period 1295.7971121073
3.55
7.0472e-06
1.929e-08
d
yr
n .2778212705031788 1.5109e-09 deg/d
Q 2.670435165784071 9.6821e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1078  
   data-arc span      9753 days (26.70 yr)  
   first obs. used      1993-08-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:34:42  

Additional Information
 Earth MOID = .98968 au 
 Jupiter MOID = 2.77876 au 
 T_jup = 3.556 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO412704  

90751 (1993 QE9)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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